JP6311345B2 - Image processing apparatus and program - Google Patents

Description

  The present invention relates to an image processing apparatus and a program technique thereof.

  In recent years, from the viewpoint of ease of editing and processing, compatibility with communication technology, or resistance to signal degradation, digitization has rapidly progressed in various fields such as image recording / playback and television broadcasting, and imaging devices to display devices. Until now, various digital technologies have been used not only for business equipment but also for consumer equipment.

  And recently, not only TV broadcast, or just image recording / playback or editing, but also the Internet, games, advertisements, and other fields to build virtual reality, augmented reality, or mixed reality. However, it is required to perform image processing on an image captured in real time. In particular, research has also progressed and started to be performed on a technique for designating a partial area in a captured moving image and realizing color conversion for the designated area.

  For example, as an apparatus that performs such color conversion, an image processing apparatus (for example, Patent Document 1) that independently corrects hue, saturation, and brightness for each hue component is known.

JP2013-105452A

  However, in the image processing apparatus described in Patent Document 1 or the like, when performing color conversion, basically only the hue is converted, and information on the uneven shape before conversion is converted. Therefore, it is difficult to accurately express the stereoscopic effect of the two-dimensional imaged object in color conversion to an achromatic color or the like.

  The present invention has been made in order to solve the above-described problems. The object of the present invention is to maintain a relative distance between saturation and lightness in any color conversion including an achromatic color. An object of the present invention is to provide an image processing apparatus or the like that can accurately express the three-dimensional effect of a converted object.

  In order to solve the above problems, an image processing apparatus or the like according to the present invention is an image processing apparatus that performs color conversion on an image formed by image data, and performs a desired hue when performing the color conversion. Information indicating color feature values of saturation and lightness and receiving the input information as desired color information and information indicating color feature values of hue, saturation and lightness of the conversion source On the basis of the input acceptance means for accepting as the conversion source color information, representative values of predetermined hue, saturation and brightness, the input desired color information, and the input conversion source color information, Color conversion that calculates color feature values of hue, saturation, and lightness after color conversion, and performs color conversion of color feature values for pixels that constitute the image and that correspond to the conversion source color information Means and the color converted pixel Output means for outputting the image, wherein the color conversion means calculates a color feature amount of the hue included in the desired color information as a color feature amount of the hue after conversion, and puts it in the HSV color space. Then, a value obtained by adding the color feature amount of saturation of the desired color information to the difference value between the saturation color feature amount of the conversion source color information and the representative value of saturation is used as the saturation after the color conversion. And a value obtained by adding the lightness color feature value of the desired color information to the difference value between the lightness color feature value of the conversion source color information and the lightness representative value on the HSV color space, It has a configuration for calculating the brightness after color conversion.

  With this configuration, the image processing apparatus or the like according to the present invention can convert the color of the designated area while maintaining the distance in the HSV color space with respect to the saturation and brightness before color conversion. With respect to the imaged region, color conversion can be performed while maintaining the information of saturation and lightness necessary for perceiving a stereoscopic effect.

  Therefore, the image processing apparatus or the like according to the present invention can maintain the relative distance between the saturation and the lightness even if the conversion process to any color including an achromatic color is executed for a predetermined pixel or region in the image. Therefore, the stereoscopic effect of the imaged object can be accurately expressed, and the stereoscopic effect can be adjusted by giving a count to the relative distance between saturation and lightness.

  The image processing apparatus according to the present invention can maintain a relative distance between saturation and lightness even if a conversion process to any color including an achromatic color is performed on a predetermined pixel or region in an image. The stereoscopic effect of the imaged object can be accurately expressed, and the stereoscopic effect can be adjusted by giving a count to the relative distance between the saturation and the brightness.

It is a block diagram which shows the structure of one Embodiment of the image processing apparatus which concerns on this invention. 6 is a flowchart illustrating an operation of color conversion processing executed in the image processing apparatus according to the embodiment. It is the figure which compared the case where the specific image process including the designation | designated area | region detection process of the conventional method and this embodiment was performed.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

  In the following embodiments, the image processing apparatus of the present invention and the program thereof are applied to an image processing apparatus that executes color conversion processing for converting the color of an object imaged with respect to moving image data. It is a form. However, the present invention is not limited to the following embodiments within the scope including the technical idea.

[1] Outline of Image Processing Apparatus First, the principle of the present invention in the image processing apparatus 10 of the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the image processing apparatus 10 of the present embodiment.

  The image processing apparatus 10 according to the present embodiment is an apparatus that executes color conversion processing on an object having a predetermined color that is imaged in a moving image formed by moving image data, including an achromatic color. This is an apparatus capable of accurately expressing the stereoscopic effect of the color-converted object regardless of the color conversion process.

  Further, the image processing apparatus 10 according to the present embodiment is output from an imaging camera in order to perform color conversion of an arbitrary object in a mixed reality such as virtual reality, augmented reality, or virtual fitting that has already been constructed. Of various moving image data such as moving image data, streaming moving image data, or moving image data created or created by computer graphics, the object (designated area) specified by the user or others It has a configuration for executing color conversion processing.

  The image processing apparatus 10 according to the present embodiment reflects not only the hue but also the saturation and lightness by reflecting the color information in the HSV color space in the color feature amount after color conversion, such as red and blue. Even when color conversion from a chromatic color to an achromatic color such as gray is performed, it is possible to perform color conversion of an object while expressing the stereoscopic effect (uneven shape) of the object imaged in two dimensions. Have.

  In particular, the image processing apparatus 10 according to the present embodiment performs coordinate conversion on the color space based on the relative distance between saturation and lightness on the HSV space that affects humans in perceiving a stereoscopic effect in a two-dimensional image. The color conversion is performed from the conversion source color feature amount of each pixel constituting the object to the conversion destination color feature amount.

  That is, the image processing apparatus 10 according to the present embodiment can perform color conversion on a two-dimensional image area such as an object while maintaining information on saturation and lightness necessary to perceive a stereoscopic effect. Therefore, color conversion can be executed in a state where the perceptual characteristic with respect to the uneven shape of the object is maintained.

  Therefore, the image processing apparatus 10 according to the present embodiment accurately obtains the three-dimensional effect of the imaged object even if conversion processing to any color including an achromatic color is performed on a predetermined pixel or region in the image. It can be expressed.

  Specifically, as illustrated in FIG. 1, the image processing apparatus 10 according to the present embodiment stores a communication control unit 110 that performs communication with another communication terminal device (not illustrated), and various types of information such as application data. Controls the data storage unit 100, the database 120 that stores moving image data, the image processing unit 130 that executes various processes such as color conversion processing, the display unit 140 that displays a predetermined image, and the display unit 140 And a server management control unit 190 that controls each unit, and executes each of the above processes.

  Note that the above-described units are connected to each other by a bus B, and data transfer is performed between the components.

Further, the image processing apparatus 10 according to the present embodiment has such a configuration, so that the color conversion process can be executed in a state where the perceptual characteristic with respect to the uneven shape of the object is maintained. The image processing apparatus 10 according to this embodiment performs color conversion processing as follows:
(1) Acquire moving image data for each frame, acquire color information indicating color features of desired hue, saturation, and lightness when executing color conversion as desired color information;
(2) Two or more pixels (hereinafter referred to as “target pixels”) to be subjected to color conversion from an image formed in each frame of the acquired moving image data based on a predetermined instruction such as a user instruction. .) As the target area,
(3) From the image of each frame of the acquired moving image data, specify the color feature amount of the conversion source hue, saturation, and brightness of each target pixel belonging to the target region as the conversion source color information;
(4) For each frame, the hue and the representative value of the desired color information are determined based on the representative values of the predetermined hue, saturation, and lightness, the acquired desired color information, and the specified conversion source color information. By converting the coordinate position in the HSV color space defined by the hue, saturation, and brightness with respect to the saturation and brightness of the conversion source as a reference, the hue after color conversion of each target pixel in the designated area, Calculate the color feature amount of saturation and brightness, respectively, and perform color conversion of the color feature amount in each designated pixel,
(5) Output an image including a color-converted designated area for each frame.
Each process is executed.

  In the present embodiment, the average value of the color feature values of hue, saturation, and brightness at each designated pixel in the designated region is used as the representative value from the viewpoint of calculation efficiency and speed. However, the representative value is not the average value of the hue, saturation and lightness color feature values in each designated pixel in the designated area, but the mode value or the center of the hue, saturation and brightness in each designated pixel in the designated area. It may be a value, or may be a color feature amount having an arbitrary predetermined hue, saturation, and brightness. However, when using an arbitrary predetermined value as the representative value, it is preferable that each color feature amount of the designated area after color conversion is lower than the upper limit value of the HSV color space and higher than the lower limit value.

[2] Details of Image Processing Device Next, details of each part of the image processing device 10 in the present embodiment will be described.

  The communication control unit 110 is a predetermined network interface, establishes a communication channel with another communication terminal device (not shown) via a network (not shown), and receives image data and other data transmitted from the other communication terminal device. Receive and output to the data storage unit 100.

  The data storage unit (memory) 100 serves as a work area such as the communication control unit 110 and the image processing unit 130, and the function thereof is configured by hardware such as a RAM (Random Access Memory).

  Specifically, the data storage unit 100 of this embodiment includes an application storage unit 101 that stores various control programs and other programs including an application program that executes a specified region detection process, and operation input and other specified region detection. A first buffer 102 serving as a work area when executing processing or predetermined image processing, and second image data and other reference image data and target image data used for various processing such as designated region detection processing are stored. And a buffer 103.

  The first buffer 102 stores various data necessary for executing color conversion processing, such as desired color information, representative values, and conversion source color information for each designated pixel belonging to the designated area of each frame. The

  The second buffer 103 stores moving image data acquired by the communication control unit 110 or read from the database 120 during the color conversion process, and for each frame of the moving image data used for the color conversion process. Image data is temporarily stored.

  The database 120 is configured by an HDD or an SDD, and has a recording area in which moving image data associated with a predetermined ID is recorded.

  The image processing unit 130 is configured by a central processing unit (CPU) provided independently or by a common central processing unit (CPU) together with the management control unit 190.

In particular, the image processing unit 130 executes a predetermined application under the control of the management control unit 190.
(1) Acquisition control for acquiring moving image data for each frame and acquiring desired color information;
(2) A region designation process for designating a target region in an image of each frame based on a user instruction or an instruction for performing a designated region based on analysis of a previous frame;
(3) conversion source color information specifying process for specifying conversion source color information of each target pixel belonging to the target region from the image of the corresponding frame;
(4) Based on the representative value, the desired color information, and the conversion source color information, the hue and the representative value of the desired color information are used as a reference in the HSV color space with respect to the saturation and brightness of the conversion source. Color conversion processing for calculating the hue, saturation, and lightness color feature amount of each target pixel in the designated area by converting the coordinate position of the designated region and performing color conversion of the color feature amount in each designated pixel ,
(5) Output processing for outputting an image formed by each frame including each target pixel belonging to the designated region subjected to color conversion in conjunction with the display control unit 150 to the display unit 140;
Execute.

  Specifically, by executing an application, the image processing unit 130 performs a data acquisition control unit 131 that performs acquisition control of various types of image data, an area specification processing unit 132 that executes an area specification process, and conversion source color information identification. A color information specifying processing unit 133 that executes processing and a color conversion processing unit 134 that executes color conversion processing and output processing are realized.

  For example, the data acquisition control unit 131 of this embodiment constitutes an acquisition unit of the present invention, and the area designation processing unit 132 constitutes a designation unit of the present invention. Further, for example, the color information identification processing unit 133 of the present embodiment constitutes the identification unit of the present invention, and the color conversion processing unit 134 constitutes at least part of the color conversion unit and the output unit of the present invention.

  Details of the image processing unit 130 and details of the operation of the present embodiment will be described later.

  The display unit 140 is configured by, for example, a liquid crystal display or an organic EL display, and is mainly used for an operation when executing image processing. When the specified pixel or the specified region is specified in conjunction with the operation unit 160, the display unit 140 is used. Various images are displayed and the result of the executed image processing is displayed.

  In particular, the display unit 140 outputs an image formed by the acquired image data including designated pixels that have undergone color conversion. Note that the display unit 140 of the present embodiment constitutes the output means of the present invention or a part thereof.

  The display control unit 150 generates image data to be displayed on the display unit 140 under the control of the image processing unit 130 and the management control unit 190. In particular, the display control unit 150 includes the operation unit 160 and the display unit. In order to link 140, predetermined image data relating to an operation instruction such as designation of a designated pixel or a designated area is generated, and the generated image data is output to the display unit 140 at a predetermined timing.

  The operation unit 160 includes a keyboard that includes a number of keys such as various confirmation buttons, selection buttons, and numeric keys, and a mouse that is one of input pointing devices. In particular, the operation unit 160 performs image processing in conjunction with the display unit 140. It is used when various operation instructions are given.

  The management control unit 190 is mainly composed of a central processing unit (hereinafter referred to as CPU), and includes various input / output ports such as a communication port, a key input port, a display control port, etc. Overall functions are controlled.

[3] Image Processing Unit Next, details of each unit of the image processing apparatus 10 in the present embodiment will be described.

  The data acquisition control unit 131 operates in conjunction with the display control unit 150 under the user's instruction input via the operation unit 160, reads out from the database 120 via the communication control unit 110, and reads the data for each frame. 2 The moving image data is acquired via the buffer 103. Then, the data acquisition control unit 131 sequentially displays the acquired moving image data on the display unit 140.

  In addition, the data acquisition control unit 131 identifies the color conversion destination hue, saturation, and lightness color feature amount for the moving image data of the corresponding frame, and associates the color feature amount with each frame. Are stored in the first buffer 102 as conversion source color information.

  The area designation processing unit 132 is linked to the display control unit 150 and the operation unit 160, and is based on one of the moving image data acquired by the data acquisition control unit 131 based on a user instruction input via the operation unit 160. An arbitrary area (specifically, an object) in an image formed by a frame (for example, a reference frame) is designated as a designated area serving as a reference for color conversion processing.

  The area designation processing unit 132 performs predetermined image analysis on an image of a frame (hereinafter referred to as a “secondary frame”) different from the reference frame in the same moving image data based on the designated area designated by the reference frame. And an area having the same color component as the designated area is designated as the designated area in the image of the secondary frame.

For example, the area designation processing unit 132 performs the predetermined image analysis as follows:
(1) In the image of the reference frame, the color feature amount of each designated pixel belonging to the designated region and the color feature amount of each adjacent pixel adjacent to each designated pixel are specified,
(2) For each designated pixel, a difference value between the color feature amount of the designated pixel and the feature amount of the adjacent pixel is calculated, and a maximum value and a minimum value obtained by adding or subtracting the calculated maximum value of the difference value to the color feature amount of the designated pixel Calculate the value,
(3) A color range determined by the calculated maximum value and minimum value is calculated as a color range of a color feature amount including noise,
(4) Identifying pixels belonging to the calculated color range in the image constituting the target image of the secondary frame,
(5) The same area formed in the specified pixel target image is detected as the designated area and designated as the same area as the reference designated area.

  The color information identification processing unit 133 identifies the coordinate position in the image of each pixel (that is, the designated pixel) belonging to the designated area designated in the reference frame and the secondary frame, and the color feature amount of hue, saturation, and brightness. Then, the specified various types of information are stored as conversion source color information in the first buffer 102 in association with a frame (specifically, a frame ID).

  In addition, the color information identification processing unit 133 calculates representative values of hue, saturation, and brightness of each pixel in the specified area, and stores the calculated representative values in the first buffer 102.

  Note that the color information identification processing unit 133 according to the present embodiment calculates an average value of the hue, saturation, and brightness of each pixel in the designated area for each frame, and uses the calculated average value as a representative value of the corresponding frame. Store in the first buffer 102. However, as described above, the color information identification processing unit 133 may calculate the mode value or median value of the hue, saturation, and brightness of each pixel in the designated area as the representative value.

  For each frame, the color conversion processing unit 134 determines desired color information based on a predetermined representative value, desired color information designated by the user, and conversion source color information of each designated pixel belonging to the designated area. The coordinate position in the HSV color space is converted with respect to the saturation and lightness included in the conversion source color information on the basis of the hue and the representative value, and the hue and saturation after color conversion of each target pixel in the specified area are converted. Color feature values of brightness and brightness are calculated. Then, the color conversion processing unit 134 outputs an image formed by each frame including each target pixel belonging to the color-converted designated area to the display unit 140.

Specifically, the color conversion processing unit 134
(1) calculating a color feature amount of a hue included in desired color information as a color feature amount of a hue after conversion;
(2) A value obtained by adding the color feature value of the saturation of the desired color information to the difference value between the color feature value of the saturation of the conversion source color information and the representative value of the saturation is calculated as the saturation after the color conversion. And
(3) A value obtained by adding the color feature amount of lightness of the desired color information to the difference value between the lightness color feature amount of the conversion source color information and the lightness representative value is calculated as the lightness after the color conversion.

  For example, the color conversion processing unit 134 calculates the converted hue nH, saturation nS, and lightness nV according to the following (Expression 1) to (Expression 3).

  In (Expression 1) to (Expression 3), the hue, saturation, and brightness included in the pre-conversion color information p are (pH, pS, pV), representative values (average values in this embodiment) r. Hue, saturation and lightness are (rH, rS, rV), hue, saturation and lightness in desired color information c are (cH, cS, cV), and hue, saturation and color information n after color conversion The brightness is (nH, nS, nV). In addition, “mS” and “mV” indicate a count of the relative distance between saturation and lightness for adjusting the stereoscopic effect.

  Then, the color conversion processing unit 134 operates in conjunction with the display control unit 150, and for each frame, the color information Ni = (nHi, nSi, nVi) of each target pixel Xi belonging to the designated region subjected to color conversion, the corresponding frame, Together with the pixels (that is, pixels other than the designated area), an image of the frame is formed and output to the display unit 140. Here, “i” indicates the pixel number of each target pixel belonging to the designated area.

[4] Color Conversion Processing Next, the operation of the color conversion processing executed in the image processing unit 130 of this embodiment will be described using FIG. FIG. 2 is a flowchart showing the operation of the color conversion process executed in the image processing unit 130 of this embodiment.

  In this operation, it is assumed that the moving image data stored in advance in the database 120 is stored for each frame, and the average value of each pixel in the designated area is used as the representative value.

  In this operation, the user designates an area for which color conversion is desired in an image formed by image data of the first frame in moving image data (hereinafter referred to as “first frame (reference frame)”) as a designated area. In addition, for the subsequent frames (secondary frames) and after, a case will be described in which color conversion processing is performed on a designated area designated in terms of image processing based on a designated area designated by the user.

  First, when the management control unit 190 detects a color conversion processing execution instruction and a target moving image data selection instruction stored in the database 120 by the user via the operation unit 160 (step S101), the data acquisition control unit 131 acquires the image data of the first frame from the database 120 via the second buffer 103 (step S102), and in conjunction with the display control unit 150, an image formed by the image data of the first frame on the display unit 140 (that is, Frame image) is displayed (step S103).

  In the process of step S103, when the data acquisition control unit 131 displays the first frame image on the display unit 140, the data acquisition control unit 131 designates the region based on the user operation and the color desired by the user (that is, the color feature after color conversion) ) Wait for the specified input.

  Next, when the region designation processing unit 132 detects a user operation including designation of desired color information desired by the user (specifically, color feature values of hue, saturation, and lightness) via the operation unit 160 (step S110). S104) The desired color information is stored in the first buffer 102, the designated area in the designated frame image is designated based on the detected user operation, and each pixel in the designated designated area is designated as the designated pixel. Specify (step S105).

  Next, the color information identification processing unit 133 identifies the coordinate position in the image of each pixel belonging to the designated area (that is, the designated pixel) and the color feature amount of hue, saturation, and brightness in the corresponding frame image. Then, the various types of specified information are stored in the first buffer 102 as conversion source color information in association with the frame ID (step S106).

  Next, the color information identification processing unit 133 calculates representative values of hue, saturation, and brightness of each specified pixel in the specified region, and stores the calculated representative values in the first buffer 102 (step S107).

  Next, the color conversion processing unit 134 calculates the hue, saturation, and lightness after color conversion based on the representative value, desired color information, and conversion source color information stored in the first buffer 102 (step S108). .

Specifically, the color conversion processing unit 134
(1) calculating a hue included in desired color information as a hue after conversion;
(2) On the HSV color space, a value obtained by adding the saturation included in the desired color information to the distance from the saturation representative value to the saturation of the conversion source color information is calculated as the saturation after the color conversion. ,
(3) On the HSV color space, a value obtained by adding the lightness included in the desired color information to the distance from the lightness representative value to the lightness of the conversion source color information is calculated as the lightness after color conversion.

  Next, the color conversion processing unit 134 cooperates with the display control unit 150 to display the color information of each target pixel belonging to the designated area subjected to the color conversion together with the corresponding frame and other pixels (that is, pixels other than the designated area) in the frame. Are formed and output to the display unit 140 (step S109).

  Next, the data acquisition control unit 131 determines whether there is a next frame in the moving image data (step S110). Specifically, the data acquisition control unit 131 determines whether or not the next frame is stored in the second buffer 103.

At this time, if the data acquisition control unit 131 determines that there is a next frame, the data acquisition control unit 131 acquires the corresponding frame from the second buffer 102 (step S111), and the region designation processing unit 132 performs predetermined image analysis. Is executed to designate a designated area in the read frame image (step S112), and the process proceeds to step S106.
On the other hand, if the data acquisition control unit 131 determines in step SS109 that there is no next frame, the data acquisition control unit 131 ends this operation.

[5] Simulation Result Next, a simulation result of the color conversion process executed in the image processing unit 130 of the present embodiment will be described with reference to FIG. FIG. 3 is a diagram comparing the case where the specific image processing including the conventional method and the designated area detection processing of the present embodiment is executed.

  For example, a leg portion formed of wood having a black metal fitting shown in FIG. 3A, a seat surface portion, a back portion showing a backrest portion, and a side portion showing an armrest portion (hereinafter referred to as “chair portion”). In the original image of the blue chair when the blue chair part (designated area (object)) is designated and the chair part is subjected to color conversion processing into red and gray (gray) Will be described.

  In such a case, if the chair portion in FIG. 3A is designated, the conventional method has converted only the hue in principle, so the change to red is shown in FIG. 3B. In addition, the same uneven shape as that of the original color can be expressed including the correction processing, but for gray that is an achromatic color, as shown in FIG. 3C, there is an exception such as solid painting (no gradation expression). There is no choice but to execute the process, and it is difficult to express the uneven shape.

  On the other hand, in such a case, if the chair part in FIG. 3A is designated, the color conversion of this embodiment can hold the distance between the saturation and the lightness in the HSV color space. As shown in D), the same uneven shape as the original color can be expressed.

  FIG. 3D is a diagram when the color conversion processing is executed by designating the color feature amount of (0, 0, 128) as the desired color information (cH, cS, cV). However, in FIG. 3, the gradation value of each color feature amount is expressed by 0 to 255.

  As described above, the image processing apparatus 10 according to the present embodiment can convert the color of the designated area while maintaining the distance in the HSV color space with respect to the saturation and brightness before color conversion. With respect to the imaged region, color conversion can be performed while maintaining the information of saturation and lightness necessary for perceiving a stereoscopic effect.

  Therefore, the image processing apparatus 10 according to the present embodiment retains the relative distance between saturation and lightness even if conversion processing to any color including an achromatic color is performed on a predetermined pixel or region in an image. Therefore, the stereoscopic effect of the imaged object can be accurately expressed.

[6] Modification [6.1] Modification 1
In this embodiment, an object (that is, a designated area) in a frame image is designated based on a user instruction. However, the present invention is not limited to this, and a designated area designated in object recognition or other image processing. Alternatively, color conversion may be performed on an area detected by specifying a specific color such as using a color code (color number) used in printing or the like. When specifying a specific color, if desired color information and conversion source color information (specific color) are specified, the color conversion processing of the pixel of the specific color or its region can be executed. .

[6.2] Modification 2
Although this embodiment is applied to moving image data, it can also be provided to still image data. That is, if a designated area is specified based on a reference image such as a sample image, the designated area (object) can be detected from a still image that is another target image.

[6.3] Modification 3
In the present embodiment, a designated area composed of a plurality of pixels is designated and detected. However, one pixel can be designated and a target pixel can be detected.

[6.4] Modification 4
Various processes of the present embodiment are executed by a single image processing apparatus 10, but the above-described various processes may be executed by different apparatuses by using a network or other communication line.

[6.5] Modification 5
Various processes of the present embodiment have been described using each frame of moving image data. However, hue, saturation, and lightness after color conversion are calculated by designating a designated area or designated pixel using one image data. The color conversion process may be executed on the same image data.

DESCRIPTION OF SYMBOLS 10 ... Image processing apparatus 100 ... Data storage part 101 ... Application storage part 102 ... 1st buffer 103 ... 2nd buffer 110 ... Communication control part 120 ... Database 130 ... Image processing part 131 ... Data acquisition control part 132 ... Area designation | designated processing part 133 ... Color information identification processing unit 134 ... Color conversion processing unit 140 ... Display unit 150 ... Display control unit 160 ... Operation unit 190 ... Management control unit

Claims (4)

An image processing apparatus that performs color conversion on an image formed by image data,
When executing the color conversion, the information indicating the color features of the desired hue, saturation, and lightness and the input information is received as the desired color information, and the color of the hue, saturation, and lightness of the conversion source Input accepting means for accepting information indicating the feature quantity and inputted information as conversion source color information;
Based on predetermined representative values of saturation and lightness, the input desired color information, and the input source color information, color feature values of hue, saturation and lightness after color conversion Color conversion means for performing color conversion of color feature amounts on the pixels that constitute the image and correspond to the conversion source color information;
Output means for outputting the image including the color-converted pixels;
With
The color conversion means is
Setting the color feature amount of the hue included in the desired color information as the color feature amount of the hue after the color conversion ;
In the HSV color space, the difference value between the saturation color feature amount and the saturation saturation value of the conversion source color information is multiplied by the relative saturation coefficient used for adjusting the stereoscopic effect, And, a value obtained by adding the color feature amount of the saturation of the desired color information to the value calculated by the multiplication is calculated as the saturation after the color conversion,
In the HSV color space, the difference value between the color feature value of brightness of the conversion source color information and the representative value of brightness is multiplied by the relative coefficient of brightness used for adjusting the stereoscopic effect, and An image processing apparatus, wherein a value obtained by adding a color feature amount of lightness of the desired color information to a value calculated by multiplication is calculated as the lightness after the color conversion. The image processing apparatus according to claim 1.
The color conversion means includes the representative color characteristic amounts (saturation rS, lightness rV) , the desired color information color features (hue cH, saturation cS, lightness cV), and the conversion source color information. each color feature (saturation pS, lightness pV) and, with the relative coefficient mS and mV saturation and brightness, based on, (formula a) ~ hue after the color conversion using the (formula C) (nH ), Saturation (nS) and lightness (nV).
The image processing apparatus according to claim 1 or 2,
An area composed of a plurality of pixels to be subjected to the color conversion is designated as a target area;
The image processing device, wherein the representative values of saturation and brightness are any one of an average value, a median value, and a mode value of saturation or brightness of pixels belonging to the target region. A program for performing color conversion on an image formed by image data by a computer,
The computer,
When executing the color conversion, the information indicating the color features of the desired hue, saturation, and lightness and the input information is received as the desired color information, and the color of the hue, saturation, and lightness of the conversion source Input accepting means for accepting information indicating the feature quantity and inputted information as conversion source color information;
Based on predetermined representative values of saturation and lightness, the input desired color information, and the input source color information, color feature values of hue, saturation and lightness after color conversion Color conversion means for performing color conversion of color feature amounts on pixels that constitute the image and correspond to the conversion source color information, and
Output means for outputting the image including the color-converted pixels;
And function as
As the color conversion means,
Setting the color feature amount of the hue included in the desired color information as the color feature amount of the hue after the color conversion ;
In the HSV color space, the difference value between the saturation color feature amount and the saturation saturation value of the conversion source color information is multiplied by the relative saturation coefficient used for adjusting the stereoscopic effect, And, a value obtained by adding the color feature amount of the saturation of the desired color information to the value calculated by the multiplication is calculated as the saturation after the color conversion,
In the HSV color space, the difference value between the color feature value of brightness of the conversion source color information and the representative value of brightness is multiplied by the relative coefficient of brightness used for adjusting the stereoscopic effect, and A program for causing a value obtained by adding a color feature amount of lightness of the desired color information to a value calculated by multiplication to function as lightness after color conversion.