JP4996038B2 - Image display program, image display apparatus, and image display method - Google Patents

Description

  The present invention relates to an image display program, an image display apparatus, and an image display method that can display a plurality of images in a comparable manner.

  With the recent development of Internet technology, the demand for posting images on homepages has increased, and digital cameras that can easily shoot digital still images are becoming widespread. Not only in the field of personal use, but also in the field of professional use such as news photography and advertising photography, development is unnecessary and images can be transmitted to newspapers and the like by communication. Digital cameras are establishing a firm position because it is becoming possible to shoot high-definition images that are comparable to salt photography, and that they can easily be digitally processed.

  A silver halide camera is also used when an individual user selects an image taken by a digital camera, for example, for use on a New Year's card, or when a professional photographer selects for publication in a magazine or the like. In the same way as is done for photographed photographs and films, an operation is performed in which a plurality of images are arranged and compared.

  As an example of a technique for performing such comparison, Japanese Patent Application Laid-Open No. 11-45334 discloses a step of displaying the plurality of images on a display device based on a plurality of sets of image data corresponding to a plurality of images, A step of selecting any one of the plurality of images as a reference image, a step of setting a processing parameter for performing predetermined image processing on the reference image, and the reference image, based on the processing parameter And executing the predetermined image processing to display the image after the predetermined image processing on the display device, and an image excluding the reference image among the plurality of images based on the processing parameters. Performing the predetermined image processing and displaying the image after the predetermined image processing on the display device. It has been described.

In this way, a plurality of images displayed side by side are linked to perform processing such as enlargement / reduction, movement, area cutout, rotation, etc., so as to improve work efficiency when comparing a plurality of selected images while processing them. It has become.
Japanese Patent Laid-Open No. 11-45334

  However, it is not always easy to compare images by simply performing a process of enlarging / reducing or moving a plurality of images in conjunction with each other as described in JP-A-11-45334. There is. That is, when comparing, the number of pixels constituting the image (resolution) is different, whether the image is taken in the vertical position or the horizontal position, or the zoom magnification of the photographing optical system at the time of photographing is different. Various types of images may be mixed, but in a state where these different types of images are simply displayed side by side, the display size of the main subject is generally different. Accordingly, even if such images are linked together and enlarged, for example, the main subject is enlarged while being different in size, so it cannot be said that it is easy to make a comparison by simply linking them.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image display program, an image display device, and an image display method capable of satisfactorily comparing a plurality of images with a simple operation.

To achieve the above object, an image display program according to a first invention is a program for processing images displayed in a plurality of display areas of a screen of a display device of a computer, wherein the plurality of images are displayed in a plurality. An image display step for displaying each of the areas, and by specifying two parallel lines for each of the images displayed in the plurality of display areas, a reference length is set as a distance between the two parallel lines. In addition, a reference setting step for setting a reference direction, and each image displayed in the display area is enlarged or reduced so that the reference lengths set for the plurality of images are equal to each other . as the direction of the reference that are each set to the plurality of images are equal to each other, it has an image geometry adjustment step of rotating the image displayed on the display area, and The reference setting step sets a first line passing through the first point and the second point by designating the first point and the second point in the displayed image. The direction from the first point to the second point is set as the reference direction, and the third point is designated in the displayed image, so that the first point passes through the third point. A second line parallel to the first line is set, and the distance between the first line and the second line is set as the reference length.

According to a second aspect of the present invention, there is provided an image display device for displaying a plurality of images in a plurality of display areas, and by specifying two parallel lines for each of the images displayed in the plurality of display areas. The reference length is set as the distance between the two parallel lines, and the reference setting means for setting the reference direction and the reference length set for each of the plurality of images are equal to each other. The image geometry for enlarging or reducing each image displayed in the display area and rotating the image displayed in the display area so that the reference directions set in the plurality of images are equal to each other. Adjusting means, and the reference setting means passes through the first point and the second point by designating the first point and the second point in the displayed image. If you set the first line Then, the direction from the first point to the second point is set as the reference direction, and the third point is designated in the displayed image, so that the third point passes through the third point. A second line parallel to the first line is set, and a distance between the first line and the second line is set as the reference length.

According to a third aspect of the present invention, there is provided an image display method for displaying a plurality of images in a plurality of display areas, and by specifying two parallel lines for each of the images displayed in the plurality of display areas. The reference length is set as the distance between the two parallel lines, and the reference setting step for setting the reference direction is set so that the reference lengths set for the plurality of images are equal to each other. The image geometry for enlarging or reducing each image displayed in the display area and rotating the image displayed in the display area so that the reference directions set in the plurality of images are equal to each other. An adjustment step, wherein the reference setting step passes through the first point and the second point by designating the first point and the second point in the displayed image. First And the direction from the first point to the second point is set as the reference direction, and the third point is designated in the displayed image by A second line parallel to the first line is set, and a distance between the first line and the second line is set as the reference length.

  According to the image display program, the image display apparatus, and the image display method of the present invention, a plurality of images can be satisfactorily compared by a simple operation.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 5 show Embodiment 1 of the present invention, and FIG. 1 is a block diagram showing a configuration of an image display apparatus.

  This image display apparatus is an apparatus configured by executing an image display program in a computer, for example. Therefore, in FIG. 1, the configuration is shown as a functional block, but in actuality, it is executed by a processing device such as a CPU or by a peripheral device or the like under the control of the CPU. ing. However, the present invention is not limited to this, and the same function may be achieved by dedicated hardware, or the equivalent function may be achieved by applying the image display method to a combination of existing devices. Of course, it is also good.

  The image display device includes, for example, an operation input unit 1 serving as a reference setting unit configured to input an operation by pointing and clicking an operation button displayed on a screen of a display 4 to be described later with a mouse or the like. An image memory 2a for storing an image file input by downloading from an imaging device such as a digital camera or via a memory card, and a display for storing values set by the operation input unit 1 A storage unit 2 including a setting memory 2b and a display image read from the image memory 2a and processed by a processing unit 6 described later in response to an operation input from the operation input unit 1 are displayed on a display 4 described later. A display unit 3 as an image display means for displaying the image and a program screen under the control of the display unit 3 A process as an image geometric adjustment means for generating a display image from the original image in accordance with the ray 4 and an operation input from the operation input unit 1 and performing various processes such as enlargement / reduction and rotation on the display image And a bus 5 that connects the operation input unit 1, the storage unit 2, the display unit 3, and the processing unit 6 to each other.

  Next, FIG. 2 is a diagram showing a screen of the image display program.

  This screen shows the screen of the image display program displayed as one window when the image display program is executed on, for example, a multi-window type operating system having a graphic user interface.

  In the window 11, a virtual light box area 11a for displaying and comparing two images side by side, and a thumbnail area for displaying a plurality of thumbnail images related to the image file stored in the image memory 2a. 11b is displayed.

  In the virtual light box area 11a, two display areas for displaying an image are provided in this example, that is, display areas 12 and 13 having substantially the same size. In these display areas 12 and 13, A scroll bar 14 for scrolling when an image does not fit in the display area can be displayed in an operable manner.

  Further, the thumbnail area 11b is provided with a plurality of display areas 15 for displaying thumbnail images related to the image files stored in the image memory 2a.

  3 is a diagram for explaining an operation procedure for making the sizes of main subjects in images displayed in a plurality of display areas substantially the same, FIG. 4 is a flowchart showing display size adjustment processing, and FIG. 5 is a flowchart showing details of a comparative image display process in FIG.

  Here, the size of the main subject in the image as shown in FIG. 3B is smaller than the image as shown in FIG. 3A, and these main subjects are displayed in almost the same size. A procedure for adjustment will be described.

  When the display size adjustment process is started, a first image and a second image to be compared are selected (step S1). This image selection is performed, for example, by dragging and dropping the thumbnail image displayed in the thumbnail area 11b onto one of the display areas 12 and 13 in the virtual light box area 11a. Then, the display image related to the selected thumbnail image is displayed on the selected one of the display areas 12 and 13 (step S2). By performing such an operation on both display areas 12 and 13, two images to be compared are displayed.

  Thereafter, one of the two displayed images (this is the first image) (here, an example in which the image displayed in the display area 12 is the first image will be described. )), For example, when it is detected that a drag operation with the mouse or the like has been performed (step S3), the drag start point P1 (designated by pressing the mouse button in the mouse drag operation) and the end point P2 (similarly). , Which is designated by releasing the mouse button) is calculated (distance on the screen moved with the mouse button held down) (step S4).

  Next, when it is detected that a drag operation with a mouse or the like is performed in the other displayed image (this is the second image) (in this example, the image displayed in the display area 13). Similarly, the interval length between the drag start point Q1 and the end point Q2 is calculated (step S6).

  Then, using the first image as a reference, the enlargement ratio of the second image is calculated so that the interval length between Q1 and Q2 matches the interval length between P1 and P2, and the moving distance of the second image Is calculated so that Q1 after the enlargement / reduction process coincides with P1 and Q2 after the enlargement / reduction process coincides with P2 (step S7). In this way, the second image is enlarged / reduced according to the enlargement ratio and translated by the calculated movement distance (step S8).

  Thereafter, the display magnification and the position of the screen display portion of the first image and the second image are stored in the display setting memory 2b (step S9), and the image display on the display 4 is updated (step S9). Step S10), the display size adjustment process is completed.

  Next, the comparison image display process in step S2 will be described with reference to FIG.

  When this process is started, the selected first image and second image are read from the image memory 2a (step S11), and the display magnification, rotation angle, and the like of these first image and second image are displayed. It is determined whether or not the information on the position of the screen display part is registered in the display setting memory 2b (step S12).

  When registered here, the first image and the second image are enlarged or reduced in accordance with the registered display magnification ratio (step S13), and further, rotation angle information is registered. The first image or the second image is rotated according to the registered rotation angle (step S14).

  Then, according to the screen display range of the first image and the second image, respective display images are generated from the first image and the second image that have been enlarged or reduced and rotated (step S15).

  When step S15 is completed, the display image of the first image and the display image of the second image generated in step S15 are displayed on the display 4, and each information is displayed in step S12. If it is not registered in the display setting memory 2b, the display image of the first image and the display image of the second image generated based on the predetermined initial value are displayed on the display 4 (step S16), This comparison image display is completed.

  The display area for displaying an image is not limited to the display area set on the screen of the same display, and is set for each of a plurality of display screens having the same display characteristics (for example, the same resolution). It may be a display area.

  Moreover, although the example which compares two images was shown above, it is applicable not only to this but also when comparing three or more images simultaneously. In addition, the reference image (an image used as a reference when other images are enlarged / reduced and matched) does not need to be an image in which two points are specified first, and may be an image in which two points are specified last. Either the image having the larger interval between the two points or the image having the smaller interval between the two points may be used as the reference image.

  Furthermore, in the above example, the main subject is set to the same size. However, not only the main subject but also the same subject in the image can be set to the same size, and further, the same subject is not included in the image. However, when it is assumed that there is a virtual subject having a predetermined length at a predetermined position, it is possible to make the virtual subject have the same size.

  In the above description, two points in the image are designated by dragging the mouse. However, it may be designated by clicking twice in different places in the image. Various other operation input methods may be used. It can be widely adopted. At this time, it is desirable to adopt a simple and easy-to-understand operation input method.

  According to the first embodiment, the reference length can be set as the length of the line segment connecting these two points with a simple operation of designating the two points in the displayed image. It is possible to observe subjects included in the two images with the same size. Thereby, a some image can be compared favorably.

  6 and 7 show Embodiment 2 of the present invention, and FIG. 6 is a diagram for explaining an operation procedure for making the sizes of main subjects in images displayed in a plurality of display areas substantially the same. FIG. 7 is a flowchart showing display size adjustment processing.

  In the second embodiment, the same parts as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and only different points will be mainly described.

  Also in the second embodiment, a case where the size of the main subject in the image as shown in FIG. 6B is smaller than the image as shown in FIG. 6A will be described as an example.

  When the display size adjustment process is started, the above-described steps S1 and S2 are performed, and the first image and the second image to be compared are selected and displayed in the display areas 12 and 13, respectively.

  Thereafter, a horizontal straight line (a line parallel to the horizontal side of the rectangular display area) or a vertical straight line (a line parallel to the vertical side of the rectangular display area) is selected (step S21), and the displayed 2 If it is detected in any one of the two images (this is the first image) that an operation with a mouse or the like (for example, a mouse button pressing operation in a drag operation) is performed at the position of the point P1. The first straight line L1 selected from the horizontal and vertical directions passing through the point P1 is generated and displayed (step S22). Specifically, when a mouse button is pressed, a horizontal straight line is displayed at the position of the mouse pointer, and as the mouse is dragged, the horizontal straight line moves up and down on the screen. By releasing, the horizontal straight line is fixed at the released position.

  Subsequently, in the first image, when it is detected that an operation with the mouse or the like (similarly, an operation of releasing the mouse button in the drag operation) is performed at the position of the point P2, the first straight line passing through the point P2 is detected. A second straight line L2 parallel to L1 is generated and displayed (step S23).

  Then, a distance (interval length) between the first straight line L1 and the second straight line L2 is calculated (step S24).

  Next, when it is detected that the operation with the mouse or the like is performed at the position of the point Q1 in the other displayed image (this is the second image), the first straight line passing through the point Q1. A third straight line L3 parallel to L1 is generated and displayed (step S25).

  Similarly, in the second image, when it is detected that the operation by the mouse or the like is performed at the position of the point Q2, a fourth straight line L4 parallel to the first straight line L1 passing through the point Q2 is generated. Displayed (step S26). The procedure for fixing the positions of the straight lines L2 to L4 is the same as the procedure for fixing the position of the straight line L1.

  Then, the distance (interval length) between the third straight line L3 and the fourth straight line L4 is calculated (step S27).

  An interval length between the first straight line L1 and the second straight line L2 calculated in step S24, an interval length between the third straight line L3 and the fourth straight line L4 calculated in step S27, and Based on the above, the enlargement ratio of the second image is calculated (step S28), and the second image is enlarged or reduced according to the enlargement ratio (step S29).

  Thereafter, the display size adjustment processing is completed after performing Step S9 and Step S10.

  According to the second embodiment, the same effects as those of the first embodiment described above can be obtained, and these two lines can be obtained only by a simple operation of designating two parallel lines in the displayed image. The reference length can be set as the distance between the parallel lines, and the subjects included in the two images can be observed with the same size. Thereby, a some image can be compared favorably.

  In addition, since the position of the two parallel lines can be designated by an independent operation for each straight line, it is possible to perform positioning with high accuracy, and on the screen determined by the interval between these parallel straight lines. The accuracy of the length specification is improved.

  FIGS. 8 and 9 show Embodiment 3 of the present invention, and FIG. 8 is a diagram for explaining an operation procedure for making the sizes of main subjects in images displayed in a plurality of display areas substantially the same. FIG. 9 is a flowchart showing display size adjustment processing.

  In the third embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals, description thereof is omitted, and only different points will be mainly described.

  Also in the third embodiment, a case where the size of the main subject in the image as shown in FIG. 8B is smaller than the image as shown in FIG. 8A will be described as an example.

  When the display size adjustment process is started, the above-described steps S1 and S2 are performed, and the first image and the second image to be compared are selected and displayed in the display areas 12 and 13, respectively.

  Thereafter, when it is detected that one of the two displayed images (this is the first image) is dragged with a mouse or the like and two points P1 and P2 are designated, A first straight line L1 is generated between the two points P1 and P2 and displayed on the display 4 (step S31). Specifically, when the mouse button is pressed and dragged, a straight line passing through two points, the position of the mouse pointer when the mouse button is pressed (point P1) and the position of the mouse pointer being dragged (point P2). When L1 is displayed and the mouse button is released, the straight line L1 is fixed at that position.

  Subsequently, when it is detected in the first image that an operation (for example, a click operation) with a mouse or the like is performed at the position of the point P3, a second parallel to the first straight line L1 passing through the point P3 is detected. A straight line L2 is generated and displayed (step S32).

  In step S24, the distance (interval length) between the first straight line L1 and the second straight line L2 is calculated.

  Next, when it is detected that the operation with the mouse or the like is performed at the position of the point Q1 in the other displayed image (this is referred to as a second image), the second image parallel to the first straight line L1 is detected. 3 straight lines L3 are generated and displayed (step S33).

  Similarly, when it is detected in the second image that the operation with the mouse or the like is performed at the position of the point Q2, a fourth straight line L4 parallel to the first straight line L1 is generated and displayed (step S34). ).

  In step S27, the distance (interval length) between the third straight line L3 and the fourth straight line L4 is calculated.

  Thereafter, step S28 and step S29 are performed, and further, step S9 and step S10 are performed, and then the display size adjustment processing is completed. The procedure for fixing the positions of the straight lines L2 to L4 is the same as the procedure for fixing the position of the straight lines in the second embodiment.

  According to the third embodiment, the same effects as those of the first and second embodiments described above can be obtained, and these two operations can be performed with a simple operation of designating two parallel lines in the displayed image. A reference length can be set as the distance between two parallel lines, and the subjects included in the two images can be observed with the same size. Thereby, a some image can be compared favorably.

  In addition, the designation of the two parallel lines is performed by designating the first point and the second point in the displayed image in the first image among the plurality of displayed images. By setting a first line passing through these two points and then specifying a third point in the image, a second line passing through the third point and parallel to the first line And by specifying two points in the second or subsequent image of the plurality of displayed images, the two points passing through the two points and parallel to the first line are set. Because it is done by setting a line, it is easy to operate and it is also possible to set parallel lines that are inclined with respect to the display area, and it is also easy to compare diagonally inclined subjects in the same direction It becomes possible to do.

  FIGS. 10 to 12 show Embodiment 4 of the present invention, and FIG. 10 is a diagram for explaining an operation procedure for making the sizes of main subjects in images displayed in a plurality of display areas substantially the same. FIG. 11 is a flowchart showing the display size adjustment process, and FIG. 12 is a diagram showing the arrangement of four partial areas in each rectangular area displayed in the first image and the second image.

  In the fourth embodiment, parts similar to those of the first to third embodiments are denoted by the same reference numerals, description thereof is omitted, and only different points will be mainly described.

  In the fourth embodiment, the size of the main subject in the image shown in FIG. 10B is smaller than that shown in FIG. 10A, and the angle of the main subject is about 90 degrees. An example will be described in which they are different.

  When the display size adjustment process is started, the above-described steps S1 and S2 are performed, and the first image and the second image to be compared are selected and displayed in the display areas 12 and 13, respectively.

  Thereafter, when it is detected that one of the two displayed images (this is the first image) is dragged with a mouse or the like and two points P1 and P2 are designated, A first rectangular region R1 having a diagonal line between the two points P1 and P2 and each side parallel to any of the four sides of the display areas 12 and 13 is generated and displayed on the display 4 (step S41).

  Subsequently, each of the four partial areas A, B, C, and D (see FIG. 12A) surrounded by the two diagonal lines and the four sides of the first rectangular area R1 is included in the partial area. An average value of color differences of pixels is calculated (step S42). Here, as the color difference, attention is paid to either one of Cr or Cb, and an average value of each pixel is calculated for only the color difference of interest. Note that a method for calculating the color difference Cr and the color difference Cb from the RGB signal will be described in step S45 at a later stage.

  Next, when it is detected that a drag operation with a mouse or the like is performed on the other displayed image (this is the second image) and two points Q1 and Q2 are designated, the two points Q1 and Q1 are detected. A second rectangular region R2 having a diagonal line between Q2 and each side parallel to any of the four sides of the display areas 12 and 13 is generated and displayed on the display 4 (step S43).

  For each of the four partial areas E, F, G, and H (see FIG. 12B) surrounded by the two diagonal lines and the four sides of the second rectangular area R2, each pixel included in the partial area. The average value of the color differences is calculated (step S44).

  Subsequently, the color difference arrangement (distribution) of the four partial areas (areas) of the first rectangular area R1 and the color difference arrangement (distribution) of the four partial areas (areas) of the second rectangular area R2 are: The second image is rotated by 90 degrees so that the same arrangement is obtained (step S45).

  Specifically, the process of step S45 is performed as follows.

  First, the absolute value of the difference between the average value of the color difference of the partial area A and the average value of the color difference of the partial area E, and the absolute value of the difference between the average value of the color difference of the partial area B and the average value of the color difference of the partial area F And the absolute value of the difference between the average value of the color difference of the partial region C and the average value of the color difference of the partial region G, and the absolute value of the difference between the average value of the color difference of the partial region D and the average value of the color difference of the partial region H And the total (first total).

Here, the calculation for calculating the luminance Y, the color difference Cr, and the color difference Cb from the RGB signal can be performed based on the following mathematical formula, as is well known.
Y = 0.299R + 0.587G + 0.114B
Cr = 0.500R-0.419G-0.081B
Cb = −0.169R−0.332G + 0.500B
Next, the absolute value of the difference between the average value of the color difference of the partial area A and the average value of the color difference of the partial area F, and the absolute value of the difference between the average value of the color difference of the partial area B and the average value of the color difference of the partial area G The absolute value of the difference between the average value of the color difference of the partial area C and the average value of the color difference of the partial area H, and the absolute value of the color difference of the partial area D and the average value of the color difference of the partial area E. And the sum of the values (second sum). This corresponds to the case where the second rectangular region R2 is rotated 90 degrees counterclockwise.

  Similarly, the absolute value of the difference between the average value of the color difference of the partial region A and the average value of the color difference of the partial region G, and the difference between the average value of the color difference of the partial region B and the average value of the color difference of the partial region H The absolute value of the difference between the average value of the color difference of the partial area C and the average value of the color difference of the partial area E, and the difference between the average value of the color difference of the partial area D and the average value of the color difference of the partial area F The sum (the third sum) of the absolute value is calculated. This corresponds to the case where the second rectangular region R2 is rotated 180 degrees counterclockwise.

  Furthermore, the absolute value of the difference between the average value of the color difference of the partial area A and the average value of the color difference of the partial area H, and the absolute value of the difference between the average value of the color difference of the partial area B and the average value of the color difference of the partial area E And the absolute value of the difference between the average value of the color difference of the partial region C and the average value of the color difference of the partial region F, and the absolute value of the difference between the average value of the color difference of the partial region D and the average value of the color difference of the partial region G And the sum (fourth sum). This corresponds to the case where the second rectangular region R2 is rotated 270 degrees counterclockwise.

  The angle corresponding to the smallest of the first to fourth totals calculated in this way is calculated as the rotation angle of the second image.

  If the first to fourth totals are not different by a predetermined value or more, the other color difference is selected and the same processing is performed.

  In addition, although the color difference is used as the color information here, the present invention is not limited to this, and other color information may be used. Furthermore, it is possible to use luminance information instead of the color difference, or the luminance information may be used together with the color difference. If such a plurality of pieces of information are used, detection accuracy can be further improved.

  Thereafter, a ratio (first ratio) between the long side of the first rectangular region R1 and the long side of the second rectangular region R2 is calculated, and similarly, the short side of the first rectangular region R1 and the second rectangular region R1 are calculated. A ratio (second ratio) with the short side of the region R2 is calculated, an average value of the first ratio and the second ratio is calculated, and is set as an enlargement ratio (step S46). Here, the average value of the ratio between the long sides and the ratio between the short sides is used as the enlargement ratio, but either the ratio between the long sides or the ratio between the short sides may be used as the enlargement ratio. The user may select which of the ratio between the images or the ratio between the short sides is used as the image enlargement ratio.

  Next, the barycentric position of the first rectangular area R1 and the barycentric position of the second rectangular area R2 are calculated, and a difference vector between these barycentric position vectors is set as a displacement vector (step S47), and the second image is obtained. Is enlarged or reduced in accordance with the enlargement ratio and then translated by this displacement vector (step S48).

  Then, the display magnification ratio, the rotation angle, and the position of the screen display portion of the first image and the second image are respectively stored in the display setting memory 2b (step S49), and step S10 is performed. Then, the display size adjustment process is completed.

  In the above, for the four partial areas obtained by dividing the rectangular area by the four sides and the diagonal line, the color difference and the luminance are calculated, and the correlation between the partial areas is examined to search for the same direction. Not limited to this, the direction used as the reference for each screen by examining the color difference and brightness of the image in more detail in units of pixels or in units of pixels, or by recognizing the main subject using image recognition technology, etc. Alternatively, the length may be automatically calculated.

  According to the fourth embodiment, substantially the same effects as those of the first to third embodiments described above can be obtained, and the rectangular region can be obtained by a simple operation of designating one rectangular region in the displayed image. The reference length can be set on the basis of the long side and the short side length, and the subjects included in the two images can be observed with the same size. Thereby, a some image can be compared favorably.

  Furthermore, since the rotation angle of the other image with respect to one image is determined based on the color distribution and luminance distribution of the designated rectangular area, and the image is rotated, the subjects included in the two images are It becomes possible to observe in the same direction. Thereby, a plurality of images can be compared better.

  At this time, by extracting color information and luminance information for four partial areas obtained by dividing the rectangular area by the four sides of the rectangular area and two diagonal lines, a rotation angle in units of 90 degrees can be more easily obtained. Can be determined. Since the camera is often photographed in a vertical position or a horizontal position, it is effective when there are an image in a vertical position and an image in a horizontal position.

  FIGS. 13 and 14 show Embodiment 5 of the present invention, and FIG. 13 is a diagram for explaining an operation procedure for making the sizes of main subjects in images displayed in a plurality of display areas substantially the same. FIG. 14 is a flowchart showing display size adjustment processing.

  In the fifth embodiment, parts similar to those in the first to fourth embodiments described above are denoted by the same reference numerals, description thereof is omitted, and only different points will be mainly described.

  In the fifth embodiment, the size of the main subject in the image shown in FIG. 13B is small and the angle of the main subject is different from the image shown in FIG. 13A. Will be described as an example.

  When the display size adjustment process is started, the above steps S1 to S3 are performed, the first image and the second image to be compared are selected and displayed in the display areas 12 and 13, respectively. The drag operation of the mouse or the like in the image is detected.

  Thereafter, the length of the first vector V1 from the drag start point P1 to the end point P2 and the angle with respect to the screen are calculated (step S51).

  Next, when it is detected in step S5 that the mouse has been dragged in the second image, the length of the second vector V2 from the drag start point Q1 to the end point Q2 and the angle with respect to the screen are calculated (step S52).

  Subsequently, based on the length and angle of the second vector V2 with respect to the first vector V1, the enlargement ratio and rotation angle of the second image with respect to the first image are calculated (step S53), The second image is enlarged or reduced according to the enlargement ratio (step S54).

  Then, the second image is rotated in the reverse direction by the rotation angle calculated in step S53 to match the direction of the first image (step S55).

  Thereafter, the second image V2 that has been enlarged and rotated together with the second image is translated so that the second vector V2 overlaps the first vector V1 (step S56), and the above steps S49 and S10 are performed. Then, the display size adjustment process is completed.

  According to the fifth embodiment, the same effects as the first to fourth embodiments described above can be obtained, and a simple operation of designating the first point and the second point in the displayed image. The length of the line segment connecting the first point and the second point is set as the reference length, and the direction from the first point to the second point is set as the reference direction. It is possible to set, and it is possible to observe subjects included in the two images in the same size and in the same direction. Thereby, a some image can be compared favorably.

  FIGS. 15 and 16 show Embodiment 6 of the present invention, and FIG. 15 is a diagram for explaining an operation procedure for making the sizes of main subjects in images displayed in a plurality of display areas substantially the same. FIG. 16 is a flowchart showing display size adjustment processing.

  In the sixth embodiment, parts similar to those of the first to fifth embodiments described above are denoted by the same reference numerals, description thereof is omitted, and only different points will be mainly described.

  In the sixth embodiment, the size of the main subject in the image shown in FIG. 15B is small and the angle of the main subject is different from the image shown in FIG. 15A. Will be described as an example.

  When the display size adjustment process is started, the step S1, the step S2, and the step S31 are sequentially performed to select the first image and the second image to be compared, and are displayed in the display areas 12 and 13, respectively. Then, designation of two points P1 and P2 by a drag operation of the mouse or the like in the first image is detected, and a first straight line L1 is generated between the two points P1 and P2 and displayed on the display 4.

  Next, the angle with respect to the screen of the first vector (the first line segment L1 becomes a vector) from the dragging start point P1 to the end point P2 is calculated and set as the first angle (step S61).

  Subsequently, an operation of the mouse or the like (for example, a click operation) is detected at the position of the point P3 in the first image, and a second straight line L2 parallel to the first straight line L1 is generated and displayed (step S62). In step S24, the distance (interval length) between the first straight line L1 and the second straight line L2 is calculated.

  Thereafter, designation of two points Q1 and Q2 by a drag operation with the mouse or the like is detected in the second image, and a third straight line L3 is generated between the two points Q1 and Q2 and displayed on the display 4 (step S63). ).

  Then, an angle with respect to the screen of the second vector (from which the third line segment L3 becomes a vector) from the dragging start point Q1 to the end point Q2 is calculated and set as the second angle (step S64).

  Next, an operation with the mouse or the like (for example, a click operation) is detected at the position of the point Q3 in the second image, and a fourth straight line L4 parallel to the third straight line L3 is generated and displayed (step S65). .

  After that, the distance (interval length) between the third straight line L3 and the fourth straight line L4 is calculated in the step S27, and the interval length between the first straight line L1 and the second straight line L2 is calculated in the step S28. And the enlargement ratio of the second image based on the distance between the third straight line L3 and the fourth straight line L4, and in step S29, the second image is displayed in accordance with the enlargement ratio. Zoom in or out.

  Subsequently, the second image is rotated by the difference between the first angle and the second angle, and the direction of the second image is adjusted to the direction of the first image (step S66).

  Thereafter, after performing step S49 and step S10, this display size adjustment processing is completed.

  According to the sixth embodiment, the same effect as the first to fifth embodiments described above can be obtained, and a simple operation of designating the first point and the second point in the displayed image. By setting the first line passing through the first point and the second point, it is possible to set the direction from the first point to the second point as a reference direction, By a simple operation of designating a third point in the displayed image, a second line passing through the third point and parallel to the first line is set, and the first line and The distance from the second line can be set as a reference length, and the subjects included in the two images can be observed in the same size and in the same direction. Thereby, a some image can be compared favorably.

  In addition, this invention is not limited to the Example mentioned above, Of course, a various deformation | transformation and application are possible within the range which does not deviate from the main point of invention.

  The present invention can be suitably used when displaying electronic images side by side for comparison.

1 is a block diagram showing a configuration of an image display device in Embodiment 1 of the present invention. FIG. 4 is a diagram showing a screen of an image display program in the first embodiment. The figure for demonstrating the operation procedure which makes substantially the same the size of the main to-be-photographed object in the image displayed on a some display area in the said Example 1. FIG. 7 is a flowchart showing display size adjustment processing in the first embodiment. 5 is a flowchart showing details of a comparative image display process in FIG. 4 of the first embodiment. The figure for demonstrating the operation procedure which makes substantially the same the size of the main to-be-photographed object in the image displayed on the some display area in Example 2 of this invention. 9 is a flowchart showing display size adjustment processing in the second embodiment. The figure for demonstrating the operation procedure which makes substantially the same the size of the main to-be-photographed object in the image displayed on a some display area in Example 3 of this invention. 10 is a flowchart showing display size adjustment processing in the third embodiment. The figure for demonstrating the operation procedure which makes substantially the same the size of the main to-be-photographed object in the image displayed on a some display area in Example 4 of this invention. 10 is a flowchart showing display size adjustment processing in the fourth embodiment. In the said Example 4, the figure which shows arrangement | positioning of four partial area | regions in each rectangular area | region displayed on the 1st image and the 2nd image. The figure for demonstrating the operation procedure which makes substantially the same the size of the main to-be-photographed object in the image displayed on a some display area in Example 5 of this invention. 10 is a flowchart showing display size adjustment processing in the fifth embodiment. The figure for demonstrating the operation procedure which makes substantially the same the size of the main to-be-photographed object in the image displayed on a some display area in Example 6 of this invention. 10 is a flowchart showing display size adjustment processing in the sixth embodiment.

Explanation of symbols

1 ... operation input part (standard setting means)
2. Storage unit 2a Image memory 2b Display setting memory 3 Display unit (image display means)
4 ... Display 5 ... Bus 6 ... Processing unit (Image geometry adjustment means)
11 ... Window 11a ... Virtual light box area 11b ... Thumbnail area 12, 13 ... Display area 14 ... Scroll bar 15 ... Display area
Agent Patent Attorney Susumu Ito

Claims (3)

A program for processing images displayed in a plurality of display areas of a screen of a computer display device,
An image display step of displaying a plurality of images respectively in a plurality of display areas;
By specifying two parallel lines for each of the images displayed in the plurality of display areas, a reference length is set as a distance between these two parallel lines, and a reference direction is set. A reference setting step to be set;
The respective images displayed in the display area are enlarged or reduced so that the reference lengths set for the plurality of images are equal to each other, and the reference directions set for the plurality of images are set. And an image geometric adjustment step of rotating the image displayed in the display area so that they are equal to each other ,
The reference setting step sets a first line passing through the first point and the second point by designating the first point and the second point in the displayed image. The direction from the first point to the second point is set as the reference direction, and the third point is designated in the displayed image, so that the first point passes through the third point. An image display program characterized in that a second line parallel to the first line is set and the distance between the first line and the second line is set as the reference length . Image display means for displaying a plurality of images respectively in a plurality of display areas;
By specifying two parallel lines for each of the images displayed in the plurality of display areas, a reference length is set as a distance between these two parallel lines, and a reference direction is set. a reference setting means for setting,
The respective images displayed in the display area are enlarged or reduced so that the reference lengths set for the plurality of images are equal to each other, and the reference directions set for the plurality of images are set. Image geometric adjustment means for rotating the image displayed in the display area so that are equal to each other ;
Equipped with,
The reference setting means sets the first line passing through the first point and the second point by designating the first point and the second point in the displayed image. The direction from the first point to the second point is set as the reference direction, and the third point is designated in the displayed image, so that the first point passes through the third point. A second line parallel to the first line is set, and a distance between the first line and the second line is set as the reference length . An image display step of displaying a plurality of images respectively in a plurality of display areas;
By specifying two parallel lines for each of the images displayed in the plurality of display areas, a reference length is set as a distance between these two parallel lines, and a reference direction is set. A reference setting step to be set;
The respective images displayed in the display area are enlarged or reduced so that the reference lengths set for the plurality of images are equal to each other, and the reference directions set for the plurality of images are set. And an image geometric adjustment step of rotating the image displayed in the display area so that they are equal to each other ,
The reference setting step sets a first line passing through the first point and the second point by designating the first point and the second point in the displayed image. The direction from the first point to the second point is set as the reference direction, and the third point is designated in the displayed image, so that the first point passes through the third point. And a second line parallel to the first line and a distance between the first line and the second line as the reference length .

Images