JP2011135527A - Digital camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital camera capable of presenting appropriate composition in accordance with a scene that a user attempts to capture. <P>SOLUTION: A digital camera includes: an imaging section for producing image data representing a subject image; a live-view display section for performing real-time motion picture display of a scene being captured by the imaging section; a sample acquiring section for acquiring at least a part of live-view image data used for the motion picture display as a sample image; a composition evaluating section for evaluating the composition of each of sample images acquired on the basis of a predetermined criterion; and a composition presenting section for selectively presenting the composition while overlapping the motion picture display by the live-view display section on the basis of the sample image having the composition to which the highest evaluation has been given by the composition evaluating section. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a digital camera having a live view function.

  Many digital cameras have a function of acquiring a through image by, for example, thinning and reading out an image signal obtained by an image sensor, and displaying the through image on a liquid crystal display unit at a predetermined frame rate. Yes. By using such a live view function to present the range captured by the digital camera to the user, it is possible to assist the user in determining the composition prior to the actual shooting.

  As a technique using the live view function, for example, a technique has been proposed in which a live view image and an auxiliary frame indicating a general composition are superimposed and displayed (see Patent Document 1).

  In addition, when resuming video recording after it has been interrupted, we also proposed a technology that makes it possible to make the transition between the moving image obtained after resuming shooting and the moving image just before the interruption easier by displaying the last frame of the moving image shooting semi-transparently. (See Patent Document 2).

  On the other hand, a technique has also been proposed in which different regions in a photographed image are cut out and presented as images of various compositions, and a user selects an image of a desired composition (see Patent Document 3). .

JP 2000-270242 A JP 2006-129424 A JP 2007-180664 A

  By the way, in the conventional technique, the auxiliary frame superimposed on the live view image corresponds to a generalized composition suitable for photographing such as portraits and group photographs. For this reason, the displayed auxiliary frame may not be suitable for the scene that the user intends to shoot.

  An object of the present disclosure is to provide a digital camera capable of presenting a suitable composition in accordance with a scene that a user intends to shoot.

  The above-described object can be achieved by a digital camera disclosed below.

  The digital camera includes at least one of an imaging unit that generates image data representing a subject image, a live view display unit that displays a scene captured by the imaging unit in real time, and live view image data used for moving image display. A sample acquisition unit that acquires a part as a sample image, a composition evaluation unit that evaluates the composition of each of the acquired sample images based on a predetermined standard, and a sample image that has the composition given the highest evaluation by the composition evaluation unit And a composition presentation unit that selectively presents the composition on the moving image display by the live view display unit.

  In the digital camera having the configuration described above, a suitable composition can be presented in accordance with the scene that the user is going to shoot.

It is a figure which shows one Embodiment of a digital camera. It is a figure which shows the example of a sample image. It is a figure explaining composition analysis processing. It is a flowchart showing composition evaluation operation. It is a figure which shows the example of composition presentation. It is a figure which shows another embodiment of a digital camera. It is a figure which shows the example of presentation of the composition which applied the optimization of the composition by trimming, and trimming. It is a figure which shows another embodiment of a digital camera. It is a figure which shows the composition presentation example to which the zoom magnification control based on trimming was applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
FIG. 1 shows an embodiment of a digital camera.

  In the digital camera shown in FIG. 1, the imaging unit 10 includes a photographic optical system 11 and an imaging element 12. The output signal of the image sensor 12 is converted into digital data by the signal processing unit 13. The memory 14, the image processing unit 15, and the recording / playback processing unit 16 illustrated in FIG. 1 are connected to the photographing control unit 18 via a bus. The imaging control unit 18 controls the imaging operation by the imaging unit 10 and the operation of each unit connected via the bus based on an instruction from the user input via the operation panel 19.

  When a still image is instructed by pressing the release button on the operation panel 19, the image processing unit 15 applies all signals from the signal processing unit 13 to all the pixels of the image sensor 12 in accordance with an instruction from the imaging control unit 18. Receive the corresponding digital data. At this time, the image processing unit 15 performs interpolation processing or the like on the digital data, generates image data corresponding to the imaging range of the imaging unit 10, and holds this in the memory 14. This image data is, for example, passed to the recording / playback processing unit 16 via the bus, recorded on the storage medium 17 such as a memory card, and passed to the liquid crystal display unit 23 via the still image display control unit 24. And presented to the user via the display screen.

  On the other hand, other than the still image capturing timing, the output signal of the image sensor 12 is used for a live view function that presents a moving image representing an imaging range by the imaging unit 10 to the user. The live view display unit 20 illustrated in FIG. 1 includes a moving image display processing unit 22 and a liquid crystal display unit 23. The moving image data for the live view function is generated based on, for example, an image signal read out by the signal processing unit 13 from the image sensor 12 at a predetermined frame rate. The moving image data is transferred to the liquid crystal display unit 23 via the moving image display control unit 22 and displayed on the display screen. The moving image data is also used for measuring the distance to the subject and for measuring the field luminance.

  In the following description, the image data of each frame included in the moving image data used for the live view function is referred to as live view image data.

  The sample acquisition unit 25 illustrated in FIG. 1 includes a sample extraction control unit 26 and a sample holding unit 27. For example, the sample extraction control unit 26 periodically extracts sample image data from live view image data transferred at a predetermined frame rate from the image processing unit 15 to the moving image display control unit 22 via a bus. And held in the sample holder 27.

  When the user is aiming at the moment of shooting while looking at the display screen, the imaging range captured by the imaging unit 10 is changed every moment by the user's operation. Such temporal change of the imaging range appears in the composition of the image displayed by the live view image data. Therefore, for example, if sample images are extracted at predetermined time intervals by the sample extraction control unit 26, sample images in which the scene that the user is about to capture are captured in various compositions can be obtained.

  Note that the sample extraction control unit 26 may create a message that prompts the user to fine-tune the imaging range of the imaging unit 10 and display the message on the liquid crystal display unit 23 via the moving image display control unit 22. it can. For example, by displaying a message such as “Please pan the camera” and then extracting the live view image data as described above, the sample has a different relationship between the main subject and the background. Images can be acquired.

  FIG. 2 shows an example of a sample image. In the example of the sample image shown in FIG. 2, one person and the background are captured in various compositions having different positional relationships. The sample extraction control unit 26 can extract a predetermined number of sample images and hold them in the sample holding unit 23. At this time, the sample extraction control unit 26 can extract, for example, live view image data when the orientation of the digital camera changes larger than a predetermined threshold as a sample image. The sample extraction control unit 26 can also compare the live view image data of each frame and extract a sample image when a large change is detected in, for example, the average luminance value.

  The live view image data extracted as the sample image by the sample extraction control unit 26 described above is provided to the composition evaluation unit 28 and the composition presentation unit 32 via the sample holding unit 27.

  The composition evaluation unit 28 illustrated in FIG. 1 includes a composition analysis unit 29, an evaluation value calculation unit 30, and an evaluation reference holding unit 31. The composition analysis unit 29 analyzes each sample image and extracts the characteristics of each composition. The evaluation value calculation unit 30 evaluates the composition of each sample image based on the composition features extracted by the composition analysis unit 29 and the evaluation criteria held in the evaluation reference holding unit 31.

  FIG. 3 is a diagram for explaining composition analysis processing. FIG. 4 is a flowchart showing the composition evaluation operation.

  The composition analysis unit 29 first performs face detection processing on the sample image (step S1 in FIG. 4), and acquires information indicating the position and size of the person shown in the sample image. In the example shown in FIG. 3A, one person is detected, and in the example shown in FIG. 3B, three persons are detected.

  When the person is detected by the face detection process (affirmative determination in step S2 in FIG. 4), the composition analysis unit 29 determines whether there are a plurality of persons or one person captured in the sample image (step S3). ).

  As in the example shown in FIG. 3B, when a plurality of persons are captured in the sample image (negative determination in step S3), the composition analysis unit 29 determines the position occupied by the image of each person. Identify. Then, these subject positions obtained by the composition analysis unit 29 are compared by the evaluation value calculation unit 30 with the evaluation criteria held in the evaluation criteria holding unit 31.

  At this time, for example, the evaluation value calculation unit 30 corresponds to the case where the subject positions for three persons obtained corresponding to the example shown in FIG. 3B and the three persons are evenly arranged in the screen. The sum of the distance to the position is calculated as one index indicating the difference between the composition of the sample image and the ideal composition. In FIG. 3B, each subject position is indicated by a broken line, and an evenly arranged position is indicated by an alternate long and short dash line. Further, the evaluation reference holding unit 31 shown in FIG. 1 can also hold the equal arrangement positions corresponding to the number of subjects, and the conditions and equality that should be satisfied when a plurality of subjects are evenly arranged in the screen. It is also possible to hold a calculation formula for calculating the arrangement position.

  On the other hand, as in the example shown in FIG. 3A, when there is only one person in the sample image (affirmative determination in step S3), the composition analysis unit 29 determines the detected face of the person. Further analysis processing is performed on the image data representing the portion. Then, in the course of this analysis process, the composition analysis unit 29 identifies the positions of the eyes and nose on the face of the subject person and determines the face orientation (step S5). For example, as in the example shown in FIG. 3A, when the detected eye or nose position is biased to the left side of the region corresponding to the face, the composition analysis unit 29 displays the person in the sample image. Judged to be facing left.

  In this case, the evaluation value calculation unit 30 composes the distance between the position of the subject and the position of the golden dividing line corresponding to the orientation of the subject's face among the golden dividing lines that divide the screen into golden parts, for example. Is calculated as one index indicating the difference between the ideal composition and the ideal composition (step S6). In the example shown in FIG. 3A, the evaluation value calculation unit 30 obtains the difference between the position of the right golden dividing line and the position of the subject. In FIG. 3A, each subject position is indicated by a broken line, and the golden division position is indicated by a one-dot chain line.

  In this way, after calculating the evaluation index for the composition related to the person captured in the sample image, the composition analysis unit 29 and the evaluation value calculation unit 30 evaluate the composition regarding the background.

  At this time, the composition analysis unit 29 detects a boundary between regions having different brightnesses based on the luminance distribution of the sample image (step S7). The composition analysis unit 29 detects, for example, a boundary line between a mountain or a building captured in the background and the sky as a light / dark boundary line, calculates an average position thereof, and passes it to the evaluation value calculation unit 30. Can do.

  The evaluation value calculation unit 30 calculates the distance between the position of the light / dark boundary line received from the composition analysis unit 29 and the closer one of the golden division lines for dividing the screen into the golden gazette in the horizontal publication, and the composition of the sample image and the ideal composition. It is obtained as one of the indexes indicating the difference between (step S8).

  Next, the evaluation value calculation unit 30 calculates an evaluation value for the entire composition of the sample image based on both the evaluation index for the composition relating to the person and the evaluation index for the composition relating to the background (step S9). The evaluation value calculation unit 30 obtains an evaluation value that reflects the magnitude of deviation from the ideal composition for both the person and the background, for example, by multiplying each evaluation index by an appropriate weight. Can do.

  In the above-described example, the evaluation value finally obtained for the sample image indicates how far the composition relating to the person and the composition relating to the background of the sample image are separated from the ideal composition. In other words, the composition of the sample image having a small evaluation value has a smaller distance from the ideal composition than the composition of the sample image having a large evaluation value. Therefore, it can be determined that the composition of the sample image given the smallest evaluation value among the obtained sample images is close to the most ideal composition and has the highest evaluation.

  In the evaluation value calculation unit 30, it is desirable to give a large weight to the evaluation index for the composition relating to the person. As a result, the overall evaluation value can be obtained with emphasis on the composition relating to the person. In addition, for a sample image having a plurality of persons as subjects, the composition analysis unit 29 detects in-focus subjects in addition to the positions of the subjects described above, and this subject position has a particularly high weight. The evaluation value can also be obtained by giving. Furthermore, a subject of a person with a high degree of out-of-focus can be excluded from the number of people. In this way, by using the information regarding the in-focus state of the image capturing unit 10, it is possible to eliminate a person who accidentally appears in the screen and evaluate a composition related to an important subject.

  In contrast to the above-described example, an evaluation index indicating a small difference between the composition of each sample image and the ideal composition can be obtained. For example, the evaluation value calculation unit 30 calculates the sum of the reciprocal of the distance between the position of each subject and the corresponding equally arranged position for the sample image having a plurality of persons as subjects, and the composition between the person and the ideal composition. It can also be obtained as an evaluation index indicating the degree. Similarly, the evaluation value calculation unit 30 may calculate an evaluation index indicating the proximity between the golden division position corresponding to the orientation of the person and the subject position for the sample image with one person as the subject. Similarly, the evaluation value calculation unit 30 can also evaluate the closeness of the distance between the average position of the light / dark boundary line and the golden division position as an evaluation index for the composition relating to the background of the sample image. Then, based on these evaluation indexes, an evaluation value as a whole composition of the sample image can be calculated. In this case, it can be determined that the sample image given the maximum evaluation value among the obtained sample images is close to the most ideal composition and has the highest evaluation.

  Furthermore, for example, instead of using the distance between the subject position and the golden division position or its reciprocal as it is as an evaluation index as it is, the level or the reciprocal thereof is determined depending on which of a plurality of preset stages it belongs to. A score corresponding to can be used as an evaluation index. In this case, the evaluation value calculation unit 30 can obtain the evaluation value of the entire composition of each sample image as the sum of the weighted scores obtained by multiplying the score obtained for each evaluation criterion by the corresponding weight.

  If no person is captured in the sample image (negative determination in step S2), the above-described steps S3 to S6 are skipped, and an evaluation index related to the background obtained according to the procedure from step S7 to step S8 is obtained. It is done. Then, the evaluation value of each sample image is determined based on the evaluation index related to the background.

  Further, the composition analysis unit 29 determines a subject other than a person included in the sample image and its background based on the object distance calculated based on the sample image, and uses the determination result as a composition. It can also be used for evaluation. In this case, the composition analysis unit 29 detects a position occupied by an image of an object other than a person determined as a subject on the screen. Then, the evaluation value calculation unit 30 may evaluate the arrangement balance on the screen based on these subject positions in the same manner as in steps S4 to S6 described above.

  Next, a method for presenting a recommended composition to the user based on the evaluation value obtained for the composition of each sample image as described above will be described.

  The composition presentation unit 32 illustrated in FIG. 1 includes an image reading unit 33 and a transflective display control unit 34. Based on the evaluation result obtained by the composition evaluation unit 28, the image reading unit 33 reads the sample image given the highest evaluation result from the sample holding unit 27 and passes it to the transflective display control unit 34.

  For example, in the example of the sample image shown in FIG. 2, when the composition of the sample image B indicated by the symbol B is most highly evaluated by the composition evaluation unit 28, the image reading unit 33 is based on the evaluation result. Thus, the above-described sample image B is read from the sample holding unit 27.

  The transflective display control unit 34 that has received the sample image from the image reading unit 33 performs control for displaying the sample image in a translucent state on the live view image displayed on the liquid crystal display unit 23.

  FIG. 5 shows an example of composition presentation by the composition presentation unit 32. In the example illustrated in FIG. 5, the above-described sample image B is displayed in a semi-transparent state so as to be superimposed on the moving image displayed by the live view function. In the example of FIG. 5, only the rough outlines of the person and background captured in the sample image B are indicated by thick shaded lines.

  The semi-transmissive display control unit 34 can display the sample image selected based on the evaluation result as it is semi-transparent, or can display the contour of the subject extracted from the sample image. Further, the translucent display control unit 34 can highlight the extracted outline by changing the color of the outline. Further, the semi-transparent display control unit 34 can display the golden division position and the like used as the composition evaluation reference together with the above-described sample image or outline.

  In this way, in the digital camera shown in FIG. 1, the composition of each sample image extracted from the live view image data is evaluated, and the composition corresponding to the most highly evaluated sample image is used as the live view image. It can be displayed overlaid.

  The composition presented as described above is selected from live view images when the user is actually shooting, so the combination of the subject and background included in the scene that the user is shooting Is reflected.

  Therefore, as compared with the case where a pre-modeled composition is presented, a composition that is highly compatible with the scene to be photographed is presented, and the camera is operated so that the live view image matches this composition. Can be urged.

  This makes it possible to guide the user to photographing with a composition that is close to the ideal composition while making use of the intentions and preferences of individual users, instead of applying it to the composition typified by modeling. . Therefore, according to the digital camera as shown in FIG. 1, it is possible to provide the user with an opportunity to acquire knowledge necessary for photographing a good-looking still image through actual photographing.

  Further, the composition analysis unit 29 estimates the composition when the same subject is captured with the camera rotated by 90 degrees based on each sample image, and the evaluation value calculation unit 30 determines the composition of the camera for the estimated composition. The evaluation value may be calculated based on an evaluation standard that matches the orientation. When applying such an evaluation, the sample image acquired from the live view image with the camera held horizontally is converted into the evaluation result corresponding to the composition in the horizontal position and the composition in the vertical position. A corresponding evaluation result is obtained. Then, the evaluation value calculation unit 30 may give the highest evaluation value to the composition converted into the vertical position.

  As described above, when the composition in the case where the vertical and horizontal directions are converted is most highly evaluated by the composition evaluation unit 28, the transflective display control unit 34 prompts the user to change the orientation of the camera, and then responds. An image obtained by converting the sample image in the vertical and horizontal directions may be displayed semi-transparently.

  In this way, by applying a composition evaluation technique including an image obtained by converting the vertical and horizontal directions of the sample image and a technique for presenting the composition corresponding thereto, the user is instructed to take a photographing technique including the direction in which the camera is held. can do.

Furthermore, the user can be given an opportunity to acquire knowledge about the balance between the size of the imaging range captured by the imaging unit 10 and the size of the subject through the presentation of a suitable composition.
(Embodiment 2)
FIG. 6 shows another embodiment of the digital camera. 6 that are the same as those shown in FIG. 1 are given the same reference numerals, and descriptions thereof are omitted.

  The composition evaluation unit 28 shown in FIG. 6 includes a trimming setting unit 35 in addition to the units shown in FIG. The composition presentation unit 32 includes a presentation control unit 37 and a line drawing generation unit 36 instead of the transflective display control unit 34 shown in FIG.

  The trimming setting unit 35 sets an appropriate trimming for each sample image based on the analysis result by the composition analysis unit 29. For example, when the result of the analysis by the composition analysis unit 29 indicates that the subject arrangement is biased in the sample image, the trimming setting unit 35 causes the subject arrangement to approach the center or the golden division position. In addition, trimming can be set.

  FIG. 7A shows an example of composition optimization by trimming. In the example shown in FIG. 7A, the arrangement of the person from the center of the screen in the sample image is brought closer to the golden division position by trimming. In FIG. 7A, the trimming range set by the trimming setting unit 35 is indicated by a broken line.

  The composition analysis unit 29 performs composition analysis again on the sample image trimmed in this manner, and based on this result, the evaluation value calculation unit 30 obtains an evaluation value for the composition when optimization by trimming is applied. be able to.

  The presentation control unit 37 provided in the composition presentation unit 32 instructs the image reading unit 33 to read out the sample image corresponding to the highest evaluated composition based on the evaluation result by the composition evaluation unit 28. In response to this instruction, the sample image read from the sample holding unit 27 by the image reading unit 33 is subjected to display processing by the liquid crystal display unit 23 via the presentation control unit 37.

  When trimming is not applied in the evaluation of the composition corresponding to the image instructed to be read, the presentation control unit 37 displays the sample image in a semi-transparent state in the liquid crystal display unit in the same manner as in the first embodiment. The processing to be displayed on the screen 23 is performed.

  On the other hand, when the trimming is applied to the evaluation of the composition corresponding to the sample image instructed to be read, the presentation control unit 37 applies the trimming to the sample image received from the image reading unit 33. For example, a trimming range is extracted from the sample image, and the trimming range is enlarged and then transferred to the liquid crystal display unit 23 to be displayed in a semi-transparent state on the live view image. In addition, the presentation control unit 37 instructs the line drawing generation unit 36 to generate a line drawing indicating the trimming range. In response to this, the line drawing generation unit 36 receives information indicating the trimming range corresponding to the sample image designated from the trimming setting unit 35, and displays display information for displaying this range on the display screen of the liquid crystal display unit 23. Generate. This display information is passed to the liquid crystal display unit 23 via the presentation control unit 37, and on the basis of this display information, the line drawing indicating the trimming range is superimposed on the enlarged image of the live view image and the sample image indicating a suitable composition. Displayed on the display screen.

  FIG. 7B shows a presentation example of a composition to which trimming is applied. In the example shown in FIG. 7B, an image in which the trimming range of the selected sample image is enlarged to fill the display screen is superimposed on the live view image in which the person facing left is captured from the center. It is displayed. Further, in the example shown in FIG. 7B, a line drawing showing the comparison between the trimming range and the photographing range of the original sample image is presented as a line drawing showing the trimming range. In the example shown in FIG. 7B, an enlarged image of the sample image showing a preferable composition is shown by a thick shaded line, and a line drawing showing the trimming range is shown by a broken line. In addition, in accordance with the line drawing indicating the trimming range, an arrow for prompting an operation for matching the trimming range indicated by the line drawing with the screen or a message for prompting a change in zoom magnification can be presented.

  In this way, a more suitable composition can be presented to the user in view of changing the balance between the size of the shooting range and the size of the subject.

Furthermore, it is possible to apply control for matching the trimming range set as described above with the photographing range.
(Embodiment 3)
FIG. 8 shows another embodiment of the digital camera. 8 that are the same as those shown in FIG. 6 are given the same reference numerals, and descriptions thereof are omitted.

  The presentation control unit 37 illustrated in FIG. 8 presents a suitable composition based on the sample image in the same manner as in the second embodiment described above. In addition, the presentation control unit 37 operates the shooting optical system 11 of the imaging unit 10 via the shooting control unit 19 to change the zoom magnification instead of instructing the line drawing generation unit 36 to generate a line drawing indicating the trimming range. , Match the shooting range with the set trimming range.

  FIG. 9 shows a composition presentation example to which zoom magnification control based on trimming is applied. In the example shown in FIG. 9, the image in the trimming range indicated by the broken line in FIG. 9A is enlarged as indicated by the thick shaded line in FIG. 9B and presented as a suitable composition.

  At this time, in response to an instruction from the presentation control unit 37, the shooting control unit 19 changes the zoom magnification of the shooting optical system 11 so that the trimming range matches the shooting range. Thereby, a moving image obtained by photographing a range corresponding to the trimming range is displayed on the liquid crystal display unit 23 as a live view image. In this case, as shown in FIG. 9B, the subject captured in the live view image and the subject in the semi-transparent image showing a suitable composition are displayed with substantially the same size.

  Note that, as described above, instead of directly changing the zoom magnification of the photographing optical system 11 via the photographing control unit 19, the portion corresponding to the trimming range of the live view image is enlarged and used for moving image display. You can also

  Furthermore, in the digital cameras of the first, second, and third embodiments described above, the similarity between the preferred composition and the composition of the live view image in the process of the user operating the camera according to the presentation of the preferred composition. It is also possible to automatically perform shooting when the value becomes equal to or greater than a predetermined threshold.

DESCRIPTION OF SYMBOLS 10 ... Imaging part, 11 ... Imaging optical system, 12 ... Imaging element, 13 ... Signal processing part, 14 ... Memory, 15 ... Image processing part, 16 ... Recording / reproduction processing part, 17 ... Storage medium, 18 ... Operation panel, DESCRIPTION OF SYMBOLS 19 ... Shooting control part, 21 ... Live view display part, 22 ... Operation display control part, 23 ... Liquid crystal display part, 24 ... Still image display control part, 25 ... Sample acquisition part, 26 ... Sample extraction control part, 27 ... Sample Holding unit, 28 ... Composition evaluation unit, 29 ... Composition analysis unit, 30 ... Evaluation value calculation unit, 31 ... Evaluation reference holding unit, 32 ... Composition presentation unit, 33 ... Image reading unit, 34 ... Translucent display control unit, 35 ... trimming setting unit, 36 ... line drawing generation unit, 37 ... presentation control unit.

Claims (8)

An imaging unit that generates image data representing a subject image;
A live view display unit that displays a moving image of the scene captured by the imaging unit in real time;
A sample acquisition unit for acquiring at least a part of live view image data used for the moving image display as a sample image;
A composition evaluation unit that evaluates the composition of each acquired sample image based on a predetermined standard;
A composition presentation unit that selectively presents the composition on a moving image display by the live view display unit based on a sample image having a composition that has been given the highest evaluation by the composition evaluation unit. A digital camera. The digital camera according to claim 1, wherein
The sample acquisition unit includes a message display unit that displays, via the live view display unit, a message that prompts an operation to change the composition of the image data of each frame used for the moving image display. A digital camera that acquires sample images from live view image data at time intervals. The digital camera according to claim 1, wherein
The composition evaluation unit calculates an evaluation value corresponding to the composition based on a difference between at least one feature obtained by analyzing the sample image and a reference set for each feature. Digital camera. The digital camera according to claim 1, wherein
The digital camera characterized in that the composition presentation unit displays the live view image having the composition with the highest evaluation on the moving image display by the live view display unit in a translucent manner. The digital camera according to claim 3, wherein
The digital camera characterized in that the composition presentation unit presents a reference image indicating a standard used for composition evaluation by the composition evaluation unit in accordance with the composition having the highest evaluation. The digital camera according to claim 1, wherein
The composition evaluation unit includes a difference between at least one feature obtained by analyzing an image obtained by rotating the sample image for at least a part of the sample image together with the sample image, and a reference set for each feature On the basis of the evaluation value corresponding to the composition,
The composition presenting unit rotates the moving image display by the live view display unit when the composition evaluation value obtained for the rotated image is the highest, and the sample corresponding to the composition obtained the highest evaluation A digital camera, wherein an image is rotated in the same manner and is displayed semi-transparently on the moving image display. The digital camera according to claim 1, wherein
The composition evaluation unit sets, for at least a part of the sample image, a trimming range that reduces a difference between at least one feature obtained by analyzing the sample image and a reference set for each feature. Trimming setting section
The composition presentation unit superimposes a diagram showing the trimming range on the moving image display by the live view display unit when presenting the composition based on the sample image in which the trimming range is set by the trimming setting unit. A digital camera characterized by presentation. The digital camera according to claim 1, wherein
The composition evaluation unit sets, for at least a part of the sample image, a trimming range that reduces a difference between at least one feature obtained by analyzing the sample image and a reference set for each feature. Trimming setting section
The composition presentation unit includes a magnification control unit that controls the zoom magnification of the imaging unit according to the trimming range when the composition is presented based on the sample image in which the trimming range is set by the trimming setting unit. A digital camera characterized by having it.

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