JP5287430B2 - Image editing apparatus, image editing method, and image editing program - Google Patents

Description

  The present invention relates to an image editing apparatus, an image editing method, and an image editing program for synthesizing a character string with an image.

  In recent years, digital still cameras and digital video cameras have become widespread, and when traveling, many people carry these cameras and take many pictures. When you return from your travel destination, you will organize your photos. At that time, many people want to associate each image with simple information that describes the image.

  Patent Document 1 acquires a shooting position using GPS when shooting with a digital camera, acquires a prefecture name, a building, or a facility name from a map database based on the position, and superimposes it on an image. The method of displaying is disclosed.

JP 2004-88607 A

  However, in the method disclosed in Patent Document 1, only information registered in a database in advance such as a prefecture name can be superimposed on an image. There are many users who want to associate a character string uniquely thought of, such as an event at a travel destination and the names of animals and plants seen at the travel destination, with an image. The user can input a character string uniquely considered for each image to the editing apparatus and associate it with the image. If there are several images, the operation is not burdened by the user. However, the travel destination often takes many photographs at the same place, and in such a case, the user has to input the same character string many times, which is burdensome.

  The present invention provides an image editing apparatus, an image editing method, and an image editing program for associating a similar character string considered by a user with a large number of images taken at the same place while suppressing the burden on the user. With the goal.

In order to solve the above problems and achieve the above object, an image editing apparatus according to the present invention includes data of an image to be edited obtained by shooting, and range specifying information for specifying a shooting target area of the image. a photographing information acquisition unit for acquiring, based on the acquired range specifying information by the imaging information acquiring unit, and the area specifying unit for specifying the imaging target area of the image, capturing target area identified by the area identifying unit And a character string associated with a photographing target area that overlaps with the photographing target area specified by the area specifying unit by comparing a character string and a photographing target area held in a database that holds the character string and the photographing target in association with each other. a character string acquiring unit for acquiring columns from the database, if a plurality of character strings by the character string acquisition portion is obtained, the area specifying unit A priority assigning unit that assigns a higher priority to a character string associated with a shooting target area held in the database that has a larger area overlapping with the shooting target area specified by A display control unit that displays a plurality of character strings acquired by the character string acquisition unit according to the priority .

  The present invention provides an image editing apparatus, an image editing method, and an image editing program for associating a similar character string considered by a user with a large number of images taken at the same place while suppressing the burden on the user. Can do.

It is a block diagram of the image editing apparatus of this Embodiment. It is a flowchart which shows each operation | movement of the image editing apparatus of this Embodiment. It is a figure for demonstrating an angle of view. It is a figure for demonstrating the imaging | photography object area. It is a figure for demonstrating duplication with the imaging | photography object area and reference | standard area which exist in a database. It is a figure for demonstrating duplication with the imaging | photography object area and reference | standard area which exist in a database. It is a figure for demonstrating duplication with the imaging | photography object area and reference | standard area which exist in a database. It is a figure which shows the display of the character string according to a priority. It is a figure which shows an example of the image on which the character string was superimposed. It is a figure which shows the identification method of the imaging | photography target area which considered the elevation angle. It is a figure for demonstrating specification of the imaging | photography object area when the horizontal direction of the character string superimposed on an image is made into an angle of view.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated with reference to drawings.

  First, the configuration of the image editing apparatus 10 according to the present embodiment will be described with reference to FIG.

  FIG. 1 is a configuration diagram of an image editing apparatus 10 according to the present embodiment. The image editing apparatus 10 according to the present embodiment is an apparatus that superimposes an appropriate character string representing the contents of an image to be edited obtained by a digital camera, for example, as shown in FIG. An acquisition unit 1, a display control unit 2, a reception unit 3, an area identification unit 4, a character string acquisition unit 5, a database 6, a priority assignment unit 7, an editing unit 8, and an accumulation control unit 9. Have In addition, a recording medium 20, a display device 30, and an input device 40 are connected to the image editing device 10. The character string is information that appropriately represents an image uniquely thought by the user.

  The shooting information acquisition unit 1 acquires from the recording medium 20 data of an image to be edited obtained by shooting and shooting condition information including range specifying information for specifying the range of the image to be shot. To do.

  In the present embodiment, it is assumed that data of a plurality of images including an image to be edited and shooting condition information for each image are recorded on the recording medium 20. However, the recording medium 20 may record data of one image including an image to be edited and shooting condition information of each image. The information recorded on the recording medium 20 is recorded in, for example, the Exchangeable image file format format. The image data and the shooting condition information may be included in the same file for each image, or may be included in different files. When image data and shooting condition information are included in different files, the same image data and shooting condition information must be associated with each other and included in the file, for example, by sharing the file name before the extension. Is desirable.

  The image may be a still image or a moving image. The range specifying information includes a visual field space and a focus range. The visual field space is, for example, a shooting position, a shot orientation, and a shot angle of view when an image is obtained. The in-focus range is the range from when the image is taken to when the image is focused from the shooting position toward the shooting direction until the image is no longer focused. This is a range surrounded by the depth of field and the rear depth of field that indicates the farthest distance from the shooting position that is in focus from the subject distance. The visual field space may include the elevation angle of the imaging device at the time of shooting. Furthermore, the shooting condition information may include date and time at the time of shooting, identification information for identifying the imaging device, image resolution, shutter speed, aperture, sensitivity (ISO), and the like.

  The shooting position is specified by GPS, for example. The shooting direction is specified by, for example, a direction sensor that detects geomagnetism and specifies the direction. The elevation angle of the imaging device is specified by, for example, a gyro sensor.

  The display control unit 2 causes the display device 30 to display images and character strings. The accepting unit 3 accepts user instructions. Based on the range specifying information acquired by the shooting information acquisition unit 1, the area specifying unit 4 specifies a shooting target area that is a range to be shot of the image to be edited. The database 6 holds character strings and shooting target areas in association with each other. The character string acquisition unit 5 acquires from the database 6 a character string associated with a shooting target area that overlaps the shooting target area specified by the area specifying unit 4.

  When a plurality of character strings are acquired by the character string acquisition unit 5, the priority assigning unit 7 determines the priority of each of the plurality of character strings. Specifically, the priority assigning unit 7 assigns a higher priority to a character string associated with a shooting target area having a larger range (area) overlapping with the shooting target area specified by the area specifying unit 4. . The editing unit 8 superimposes the character string acquired by the character string acquiring unit 5 on the image to be edited. Alternatively, the editing unit 8 superimposes the character string processed by the user on the character string acquired by the character string acquiring unit 5 on the image to be edited. The processing is, for example, a change in color or size, or a change to another character string. The accumulation control unit 9 accumulates the shooting target area specified by the area specifying unit 4 and the character string superimposed on the image to be edited by the editing unit 8 in the database 6 in association with each other.

  The input device 40 is a device that can input a user instruction to the image editing device 10 of the present embodiment, and is, for example, a keyboard, a mouse, or a cross key. The user's instruction includes a character string and an instruction of a superimposition position of the character string to be superimposed on the image to be edited. The input device 40 may be a remote controller that inputs a user instruction to the image editing device 10 of the present embodiment wirelessly or the like. In that case, the reception unit 3 must be provided with a function of receiving a wireless instruction from the input device 40.

  Next, the operation of the image editing apparatus 10 according to the present embodiment will be described with reference to FIG.

  FIG. 2 is a flowchart showing each step of the operation of the image editing apparatus 10 of the present embodiment.

  First, the imaging information acquisition unit 1 acquires data of all images recorded on the recording medium 20 from the recording medium 20 (S1).

  Next, the display control unit 2 causes the display device 30 to display a list of images acquired by the imaging information acquisition unit 1 (S2).

  The user selects an image to be edited from the list of images displayed on the display device 30 and inputs information specifying the selected image to the image editing device 10 of the present embodiment using the input device 40. The accepting unit 3 accepts selection of an image to be edited from the user (S3). Note that the user may input the file name of the image to be edited into the image editing device 10 of the present embodiment using the input device 40 and cause the receiving unit 3 to receive the image to be edited.

  Next, the shooting information acquisition unit 1 acquires shooting condition information of the image to be edited selected by the user from the recording medium 20 (S4). For example, the photographing information acquisition unit 1 acquires the file name of the image to be edited selected by the user (S4). The file name is, for example, “0001.jpg” or “0002.jpg”. The display control unit 2 causes the display device 30 to display a list of file names acquired by the imaging information acquisition unit 1. At this time, the display control unit 2 may display a list of file names so that the user can identify the file name of the image selected by the user and the file name of the image not selected. For example, the display control unit 2 displays the file name of the selected image and the file name of the unselected image in different colors so that the file name of the selected image is not selected. Display the image file name separately. The display control unit 2 may display the selected image on the display device 30 so that the user can preview it.

  Next, the area specifying unit 4 specifies a shooting target area that is a range that is a shooting target of the image to be edited based on the range specifying information acquired by the shooting information acquiring unit 1 (S5).

  Here, the shooting target area specified by the area specifying unit 4 will be described. Before that, an angle of view for explaining the photographing target area will be described with reference to FIG. FIG. 3 is a diagram for explaining the angle of view. As shown in FIG. 3, the angle of view θ is calculated from the width w of the imaging surface P such as a CCD and the focal length f of the lens by the equation tan (θ / 2) = w / 2f. If w is the width of the imaging plane P in the diagonal direction, the angle of view θ is the diagonal direction, and if w is the width of the imaging plane in the horizontal direction, the angle of view θ is the horizontal angle of view. The symbol “d” indicates the shooting direction.

  Next, the shooting target area will be described with reference to FIG. FIG. 4 is a diagram for explaining a shooting target area. As shown in FIG. 4, the shooting target area is a range uniquely defined by the range specifying information. In FIG. 4, the subject distance b is centered on the shooting position O in the angle of view AOD (θ). Is a range surrounded by an arc BC having a distance obtained by subtracting the front depth of field and an arc AD having a distance obtained by adding the rear depth of field to the subject distance b. That is, it is a range indicated by diagonal lines surrounded by point A, point B, point C, and point D.

  That is, the shooting target area is a range from the position closest to the shooting position O to the position farthest from the shooting position O within the angle of view at the time of shooting within the range. A subject is a subject to be photographed in the image. The front depth of field and the rear depth of field are obtained by the following equations.

Front depth of field = Allowable circle of confusion x Aperture value x (Distance to subject) ²
/ (Focal length f ² + permissible confusion circle diameter × aperture value × subject distance)
Back depth of field = Allowable circle of confusion x Aperture value x (Subject distance) ²
/ (Focal length f ² −permissible circle of confusion × aperture value × subject distance)
The front depth of field and the rear depth of field are determined by determining the diameter of an allowable circle of confusion, which is a circle when light from a point light source forms an image on an imaging surface such as a CCD, and the lens of the imaging device. , The aperture value, and the subject distance b. At this time, the subject distance b can be obtained by using a laser range finder or the like that irradiates the subject with a pulse laser, detects the light reflected and returned by the subject by the light receiving element, and obtains the distance from the delay of the pulse. .

For example, if the distance b to the subject is 24 m, the permissible circle of confusion is 0.003328 mm, the focal length f is 210 mm, and the aperture value F is 11,
Forward depth of field = 0.03328 × 10 ^-3 × 11 × 24 ² / {(210 × 10 ^-3 ) ² -0.03328 × 10 ^-3 × 11 × 24}
= 3.987 ...
Back depth of field = 0.03328 × 10 ⁻³ × 11 × 24 ² / {(210 × 10 ⁻³ ) ² + 0.03328 × 10 ⁻³ × 11 × 24} = 5.971 ・ ・ ・
Thus, the distance range from the shooting position O of the shooting target area is 24-3.987 (= front depth of field) m to 24 + 5.971 (= back depth of field) m, that is, 20 m to 30 m.

Next, an example of specifying the shooting target area by the area specifying unit 4 will be described. The area specifying unit 4 first acquires the latitude and longitude of the shooting position O in the range specifying information. Assume that the acquired latitude is 35 ° 29′04 ″ north latitude and the longitude is 139 ° 39′19 ″ east longitude. Also, it is assumed that the shooting direction is northeast (45 ° clockwise when north is 0 °), and the angle of view is 90 °. In this case, the area specifying unit 4 determines the forward depth of field and the backward depth of field from the distance b from the shooting position O to the subject and the above-described equations for calculating the forward depth of field and the backward depth of field. The depth is calculated, and OB (= OC) is 20 m, OA (= OD) is 20 m from the front depth of field and the rear depth of field, and point A is 139 ° 39 ′ east longitude It is 19 ″, and it is specified that the north latitude is a point 30 m north from 35 ° 29′04 ″. If the north latitude of point A is 35 ° 29'04 "+ k,
k = 30 (m) × 360 ° / perimeter of the earth (m)
It can be expressed as

Assuming that the outer circumference of the earth is 40000 × 10 ³ meters, k = 0.972 ″, point A is a point where the north latitude is 35 ° 29′04.972 ″ and the east longitude is 139 ° 39′19 ″. Strictly speaking, the outer circumference of the earth is different on the equator and on the circumference passing through the pole, but the area specifying unit 4 has, for example, the circumference of the circumference on the equator as the outer circumference of the earth, etc. Similarly, the area specifying unit 4 calculates the latitude and longitude for the points B, C, and D in the same way, and for example, the area indicated by hatching in FIG. (S5).

  Next, the character string acquisition unit 5 searches the database 6 for a character string associated with a shooting target area that overlaps with the shooting target area specified by the area specifying unit 4 (hereinafter also referred to as “reference area”). (S6). When the character string exists in the database 6 (Yes in S6), the character string acquisition unit 5 identifies an imaging target area that overlaps the imaging target area (reference area) specified by the area specifying unit 4 from the database 6. Then, all character strings associated with the specified shooting target area are acquired as addition target candidates (S7).

  On the other hand, a shooting target area that overlaps with the shooting target area (reference area) specified by the area specifying unit 4 does not exist in the database 6, and a character string associated with the shooting target area that overlaps with the reference area exists in the database 6. If not (No in S6), the operation of the image editing apparatus 10 of the present embodiment proceeds to step S12.

  Here, the overlap between the reference area and the imaging target area to be compared will be described with reference to FIG. FIG. 5 shows a shooting target area Q and a shooting target area R that overlap with the reference area, and a shooting target area T that does not overlap with the reference area. Whether or not the reference area and the comparison target shooting target area overlap with each other includes the reference area ABCD, the shooting target area Q (A1B1C1D1), the shooting target area R (A2B2C2D2), and the shooting target area T (A3B3C3D3). Is determined based on whether or not the two are overlapped.

  For example, if the distance between the two shooting positions is smaller than the sum of the distances from the shooting distance to the rear depth of field, the reference area and the comparison target shooting area overlap. That is, when the reference area and the comparison target shooting area overlap, there is an intersection when a circle whose radius is the distance from the shooting position to the rear depth of field is drawn from each shooting position. When there is no intersection, there is no overlapping area regardless of the shooting direction. However, even if the condition is satisfied, there may be a case where the reference area does not overlap with the shooting target area T shown in FIG. Therefore, as in the shooting target area Q or the shooting target area R, it is determined whether one of the areas includes the four corner points of the other area. It is determined that there is an overlap with the shooting target area.

  For example, the distance C from the point CO1 can be obtained from the latitude and longitude of the reference area point C using the above-described conversion formula from distance to latitude and longitude and the three-square theorem. The distance CO1 is longer than the distance from the shooting position of the shooting target area Q to the front depth of field, closer than the distance from the shooting position to the rear depth of field, and the position of the point C is the angle of view of the shooting target area Q. If it exists, the point C is determined to exist in the shooting target area Q. Similarly, it is determined whether or not the points A, B, and D in the reference area exist within the imaging target area Q. Conversely, it may be determined whether the point A1, the point B1, the point C1, and the point D1 of the shooting target area Q are present in the reference area. In any case, if even one point exists in the other area, the reference area and the imaging target area to be compared overlap.

Further, there may be a case where the four corner points of each other area do not exist in the other area as in the shooting target area R. In such a case, the shooting positions are connected by a straight line, and the straight line and the front cover are connected. The intersection with the arc of the depth of field is the point X (the intersection with the front depth of field of the shooting target area R is the point X2), and the intersection with the arc of the rear depth of field is the point Y (the rear of the shooting target area R) If the intersection with the depth of field is the point Y2), the distance from the shooting position O of the reference area is
(Distance OX) <(Distance OY2) <(Distance OY) <(Distance OX2) <(Distance OO2)
Or
(Distance OO2) <(Distance OX2) <(Distance OX) <(Distance OY2) <(Distance OY)
If it is any of the above, it is determined that the reference area and the shooting target area R overlap.

  By the method described above, the character string acquisition unit 5 specifies a shooting target area that overlaps the shooting target area (reference area) specified by the area specifying unit 4 from the database 6, and is associated with the specified shooting target area. All character strings are acquired as addition target candidates (S7).

  When the character string acquisition unit 5 acquires a plurality of character strings (candidates for addition) (Yes in S8), the priority assigning unit 7 uses the plurality of character strings (candidates for addition target) acquired by the character string acquisition unit 5 ) Is specified (S9). Specifically, the priority assigning unit 7 assigns a higher priority to a character string (addition target candidate) associated with a shooting target area having a larger area than the reference area (S9). As shown in FIG. 6, when the imaging target area is completely included in the reference area, the overlapping area is from the area of the fan-shaped O′A′D ′ to the area of the fan-shaped O′B′C ′. Is calculated by subtracting As shown in FIG. 7, when a part of the imaging target area and a part of the reference area overlap, the area of the overlapping range may be calculated by dividing the overlapping range into a rectangle or a triangle. In this case, the area may be an approximate value instead of an accurate value. In order to simplify the calculation of the area of the overlapping range, the imaging target area may be handled as a trapezoid.

  When the character string acquisition unit 5 acquires one character string (candidate for addition) (No in S8), the operation of the image editing apparatus 10 according to the present embodiment proceeds to step S10.

  Next, the display control unit 2 causes the display device 30 to display the character string (addition target candidate) acquired by the character string acquisition unit 5 (S10). When the character string acquisition unit 5 acquires a plurality of character strings (candidates for addition) (Yes in S8), the display control unit 2 includes a plurality of items in descending order from the highest priority given by the priority assignment unit 7. A list of character strings (candidates for addition) is displayed.

  For example, in FIG. 5, an image having a shooting target area Q is shot at a position O1, and a character string “boarding a boat on Lake Kawaguchi” is superimposed on the image. It is assumed that the character string “get on the boat at” is recorded in association with it.

  In FIG. 5, the image having the shooting target area R is shot at the position O2, and the character string “Lake Kawaguchi smelt” is superimposed on the image. It is assumed that the character string “Wakasagi no” is recorded in association.

  Further, in FIG. 5, an image having the shooting target area T is shot at a position O3, and a character string “Mt. Fuji” is superimposed on the image. Assume that a string is recorded in association with it.

  In the example shown in FIG. 5, the largest area of the range overlapping with the reference area is the shooting target area Q, the second is the shooting target area R, and the shooting target area T overlaps with the reference area. Not. Therefore, in the example shown in FIG. 5, the priority assigning unit 7 assigns the first place to the character string “Boats on Lake Kawaguchi”, assigns the second place to the character string “Lake Kawaguchi”, and the character string “Mt. Fuji”. "Is not given a ranking. Therefore, in the example shown in FIG. 5, as shown in FIG. 8, the display control unit 2 causes the display device 30 to display the character string “Ride a boat on Lake Kawaguchi” on the right side of the frame. “Wakasako of Kawaguchiko” is displayed in the lower position, and the character string “Mt. Fuji” is not displayed.

  The display control unit 2 may cause the display device 30 to display an image to be edited having a reference area on the upper left side in the frame, as shown in FIG. Information relating to the image may be displayed under the image to be edited having the reference area. It gives the user information about the image to be edited. If the image is a moving image, the moving image may be reproduced on the upper left side in the frame. In addition to the shooting date and time, the shooting date and time, the information related to the image may include the type of the imaging device, information about the lens used, and the like. Further, the display control is performed so that the user of the image editing apparatus 10 can determine which character string is selected, such as changing the color of the character string or the background of the currently selected character string and the other character string. The unit 2 may cause the display device 30 to display two character strings. Furthermore, the display control unit 2 not only displays the character string, but also displays the past input history so that the most recently input character string is displayed at the top and can be selected. You may display so that a character string can be selected from the selection method.

  As described above, the display control unit 2 does not simply determine the character string to be superimposed on the image only at the shooting position, but the character string attached to the image having a higher possibility of shooting the same object in the past. May be preferentially presented to the user of the image editing apparatus 10.

  Next, the user selects one of the displayed character strings (candidates for addition), and the accepting unit 3 accepts the selection by the user (S11). When the user selects to process the selected character string (candidate for addition) and the receiving unit 3 receives information to that effect (Yes in S12), the user selects the character selected using the input device 40. The editing unit 8 superimposes the processed character string on the image to be edited (S13). Processing means changing the size or color, replacing with another character string, and specifying the position where the character string is superimposed. After step S13, the display control unit 2 causes the display device 30 to display the image to be edited on which the character string is superimposed (S14). FIG. 9 is a diagram illustrating an example of an image on which a character string is superimposed.

  On the other hand, when the user selects not to process the selected character string (candidate for addition) and the receiving unit 3 receives information to that effect (No in S12), the editing unit 8 displays the unprocessed characters. The column is superimposed on the image to be edited (S13). Then, the display control unit 2 causes the display device 30 to display the image to be edited on which the character string is superimposed (S14).

  Finally, the accumulation control unit 9 associates the shooting target area ABCD specified by the area specifying unit 4 with the character string superimposed on the image to be edited by the editing unit 8 and stores it in the database 6 (S15). At this time, in the example shown in FIG. 5, when “Lake Kawaguchi smelt” is selected, the shooting target area ABCD and the character string “Lake Kawaguchi smelt” are recorded in the database 6 in association with each other. In this case, two shooting target areas of the character string “Lake Kawaguchi smelt” can be provided in areas ABCD and A2B2C2D2. If it is a reference area that overlaps these two areas in the next and subsequent character string composition, the area of the overlap area for determining the priority of “Lake Kawaguchiko” is the sum of the two areas. Good.

  Note that the photographing information acquisition unit 1 may record the image on which the character string is superimposed by the editing unit 8 on the recording medium 20. At that time, the photographing information acquisition unit 1 functions as a recording unit.

  In addition, there is no shooting target area in the database 6 that overlaps with the shooting target area (reference area) specified by the area specifying unit 4, and a character string that is associated with the shooting target area that overlaps with the reference area exists in the database 6. If not, the accepting unit 3 may accept a character string to be superimposed on the image to be edited from the user via the input device 40.

  In addition, the area specifying unit 4 may specify the shooting target area by the method described below in order to simplify the calculation of the area of the shooting target area. That is, the area specifying unit 4 assumes that the shooting target is in the shooting direction d, replaces the arc BC and the arc AD with the line segment B′C ′ and the line segment A′D ′, and sets the shooting target area. A trapezoidal range surrounded by the points A ′, B ′, C ′, and D ′ may be used. At this time, an intersection of a straight line passing through the intersection of the straight line indicating the shooting direction d and the arc BC and a straight line indicating the shooting direction d in the horizontal plane and a straight line OA indicating the angle of view is defined as a point B ′, a straight line OD Let the intersection of Further, the intersection of the straight line OA indicating the photographing direction in the horizontal plane passing through the intersection of the straight line indicating the photographing direction and the arc AD, and the straight line OA indicating the end of the angle of view, and the intersection point of the straight line OD Let D ′.

However, when the denominator (focal length f ² −allowable confusion circle diameter × aperture value × subject distance) ≦ 0 of the formula for calculating the rear depth of field, the rear depth of field becomes an indefinite or negative value. Further, when the denominator is a positive value close to 0, the rear depth of field is a very large value. When the rear depth of field cannot be defined or has a very large value, it is assumed that the shooting target does not exist at a position far away from the subject distance, and the rear depth of field is, for example, 10 subject distances. When the value is more than double, the value obtained from the subject distance may be set to the maximum value, such as 10 times the subject distance as the distance OA (= OD).

  Moreover, in embodiment mentioned above, the area specific | specification part 4 presupposes that an imaging | photography object area exists in a horizontal surface, when specifying an imaging | photography object area. This assumes that the object to be photographed is in a horizontal plane. However, in actual shooting, only the horizontal plane is not the target of shooting. Therefore, the area specifying unit 4 uses the elevation angle in the shooting direction of the imaging device, and when the elevation angle is not 0 degrees, that is, when the shooting direction is not horizontal, particularly when shooting below the horizontal plane, that is, when shooting the ground, As shown in FIG. 10, the imaging target area is a projection plane A′B′C′D ′ projected onto the ground. However, when the distance (h / sinΦ) from the photographing position O to the ground in the photographing direction at the elevation angle Φ is shorter than the rear depth of field at the projection point of the distance A or D from the photographing position to the rear depth of field, Since the ground is closer than the distance from the shooting position to the rear depth of field, in such a case, the distance (h / sinΦ) is set instead of the distance from the shooting position to the rear depth of field, A'B'C'D 'in FIG. In FIG. 10, θ1 represents an elevation angle, H represents a horizontal direction, and W represents a projection plane on the ground of an imaging target area.

  In addition, when the shooting target area is synthesized with the character string and the image as shown in FIG. 11A, the angle of view is changed from the angle of view of the entire image to the horizontal direction of the character string as shown in FIG. The angle of view may be changed. That is, the area to be imaged may be the range A′B′C′D ′. In this case, if a character string with high importance is enlarged and superimposed on the image, the overlapping area of the reference area and the imaging target area is likely to be larger in the next image composition. Even when the areas are the same, the priority may be higher for a character string having a shooting target area closer to the shooting direction in the reference area. In FIG. 11B, θ2 indicates the angle of view in the horizontal direction of the combined character string, W indicates the shooting target area, and G indicates the character string. The actual character string G in FIG. 11B is “Mt. Fuji” in FIG. 11A, but for simplicity of explanation, a square frame indicating the position of the character string G is shown in FIG. Only is displayed.

  In the embodiment described above, the editing unit 8 superimposes the character string on the image. However, the editing unit 8 may include a character string in the image information. In this case, the character string is not included in the image, but if the image and the image information are displayed on different screens, the same effect as when the character string is superimposed on the image can be obtained. That is, the effect that the image and the character string describing the image are displayed on the same screen is exhibited.

  Further, all of the database 6, the recording medium 20, the display device 30, and the input device 40 may exist outside the image editing device 10, or may exist inside the image editing device 10. .

  The accepting unit 3 may accept a character string from the user via the input device 40 and associate the accepted character string with the image, for example, a character string superimposed on the image. For example, the accepting unit 3 accepts a selection as to whether or not to associate a character string displayed by the display device 30 with an image to be edited, and when accepting a selection not to be associated, a character string associated with the image to be edited Accept. Then, the editing unit 8 associates the character string received by the receiving unit 3 with the image to be edited.

  In the above description of the embodiment, the image editing apparatus according to the present invention has been described as a hardware configuration using a block diagram. However, the present invention is not limited to this, and the CPU executes an image editing program. Of course, the image editing apparatus of the present invention may be configured as software. The image editing program is a program for causing a computer to realize the functions of the constituent elements of the image editing apparatus 10 described above. The image editing method and the image editing program of the present invention are a method and a program for executing each step of the operation performed by the image editing apparatus of the present invention.

  DESCRIPTION OF SYMBOLS 10 image editing apparatus, 1 imaging | photography information acquisition part, 2 display control part, 3 reception part, 4 area specification part, 5 character string acquisition part, 6 database, 7 priority assignment part, 8 editing part, 9 accumulation | storage control part.

Claims (8)

A shooting information acquisition unit that acquires data of an image to be edited obtained by shooting and range specifying information for specifying a shooting target area of the image;
An area specifying unit for specifying a shooting target area of the image based on the range specifying information acquired by the shooting information acquiring unit;
The shooting target area specified by the area specifying unit is compared with the shooting target area held in the database that holds the character string and the shooting target in association with each other. A character string acquisition unit that acquires, from the database, a character string that is associated with an overlapping shooting target area;
When a plurality of character strings are acquired by the character string acquisition unit, a character string associated with a shooting target area held by the database having a larger area overlapping with the shooting target area specified by the area specifying unit. A priority assigning section for giving a high priority;
An image editing apparatus comprising: a display control unit that displays a plurality of character strings acquired by the character string acquisition unit according to the priority level assigned by the priority level granting unit . Furthermore, when a plurality of character strings are displayed by the display unit by the character string acquisition unit, a selection receiving unit that receives any of the plurality of character strings from the user;
The image editing apparatus according to claim 1, further comprising: an editing unit that associates the character string received by the selection receiving unit with the image.   An association selection accepting unit for accepting selection of whether or not to associate the character string displayed by the display unit with the image;
  A character string accepting unit that accepts a character string associated with the image when the association selection accepting unit accepts a selection that does not associate the character string displayed by the display unit with the image;
  An editing unit that associates the character string received by the character string receiving unit with the image when the character string receiving unit receives the character string;
  The image editing apparatus according to claim 1. Further, an accumulation control unit for associating a shooting target area specified by the area specifying unit with a character string associated with the image by the editing unit, and storing it in the database,
The image editing apparatus according to claim 2, further comprising: Further, an editing unit that associates the character string obtained by processing the character string acquired by the character string acquiring unit with the image,
The image editing apparatus according to claim 1.   The range specifying information includes a visual field space when the image is obtained, and a focusing range,
  The area specifying unit specifies the in-focus range in the visual field space as a shooting target area of the image.
  The image editing apparatus according to claim 1.   A shooting information acquisition step for acquiring data of an image to be edited obtained by shooting and range specifying information for specifying a shooting target area of the image;
  An area specifying step for specifying a shooting target area of the image based on the range specifying information acquired by the shooting information acquiring step;
  The shooting target area specified in the area specifying step is compared with the shooting target area held in the database that holds the character string and the shooting target in association with each other. A character string acquisition step of acquiring a character string associated with the overlapping shooting target area from the database;
  When a plurality of character strings are acquired by the character string acquisition step, the character string associated with the imaging target area held in the database having a larger area overlapping the imaging target area specified by the area specifying step. A priority giving step for giving high priority;
  A display step of displaying a plurality of character strings obtained by the character string obtaining step according to the priority given by the priority giving step;
  An image editing method comprising: A shooting information acquisition step for acquiring data of an image to be edited obtained by shooting and range specifying information for specifying a shooting target area of the image;
An area specifying step for specifying a shooting target area of the image based on the range specifying information acquired by the shooting information acquiring step;
The shooting target area specified in the area specifying step is compared with the shooting target area held in the database that holds the character string and the shooting target in association with each other. A character string acquisition step of acquiring a character string associated with the overlapping shooting target area from the database;
When a plurality of character strings are acquired by the character string acquisition step, the character string associated with the imaging target area held in the database having a larger area overlapping the imaging target area specified by the area specifying step. A priority giving step for giving high priority;
A display step of displaying a plurality of character strings obtained by the character string obtaining step according to the priority given by the priority giving step;
Image editing program to make computer execute.

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