JP2008167059A - Image display device and method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely and naturally switch display images without the sense of incongruity in executing a slide show function. <P>SOLUTION: An image display device includes a memory card 29 storing a plurality of images respectively including mutually related target objects, a displaying part 26, an image processing part 28 for detecting the position of a target object from the images stored in the memory card 29, and a control part 22 for displaying one image stored in the memory card 29 by the displaying part 26 while sequentially expanding the image centering on the target object obtained by the image processing part 28, selecting the next image to be displayed from the memory card 29, switching the image expanded to a prescribed magnification and displaying the next selected image by displaying part 26 while sequentially reducing the image expanded to the prescribed magnification centering on the target object obtained by the image processing part 28. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image display device, an image display method, and a program suitable for a digital camera or the like that performs a slide show display.

  Conventionally, as one of the playback modes of a digital camera or one of the screen saver modes of a personal computer, a display image is automatically read out every predetermined time by periodically reading image data from a medium storing a plurality of image data. Those having a so-called slide show function for switching to the above are generally used.

In a device for performing this kind of slide show display, a storage unit for storing a plurality of photographed images to which shooting date and time information is added to realize a slide show display in which a plurality of images are not temporally and spatially uncomfortable, and a photographed image A display unit that displays the image, an input unit that selects a plurality of playback target images to be displayed on the display unit from a plurality of captured images stored in the storage unit, and a plurality of playback target images that are rearranged in order of shooting date and time. When acquiring the time interval between the playback target images with adjacent shooting dates and displaying a plurality of playback target images on the display unit, switching the playback target images displayed on the display unit based on the acquired time interval A technology of an image processing apparatus including a CPU that controls an image switching effect at the time is considered. (Patent Document 1)
JP 2006-260029 A

  The technique described in Patent Document 1 is a technique that devised a method of switching images in a slide show display based on shooting date / time information added to a shot image, but just because the shooting date / time is near, it is not always a sense of incongruity. It is not always possible to switch an image without any image.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image display device, an image display method, and an image display device capable of switching display images naturally without a sense of incongruity when executing a slide show function. To provide a program.

  According to the first aspect of the present invention, there are provided storage means for storing a plurality of images each including a subject of interest associated with each other, display means for selectively displaying the images stored in the storage means, and images stored in the storage means. Detecting means for detecting the position of the subject of interest from the first and the display means for displaying one image stored in the storage means on the display means while sequentially enlarging the subject of interest obtained by the detecting means to a predetermined magnification. Display control means, an image selection means for selecting an image to be displayed next to the image displayed by the first display control means from the storage means, and a state in which the first display control means has been enlarged to a predetermined magnification From the state in which the image selected by the image selection unit is enlarged to a predetermined magnification centered on the subject of interest obtained by the detection unit, the image is displayed on the display unit while being sequentially reduced. And characterized by including a second display control means for.

  The invention described in claim 2 further comprises subject selection means for selecting one of a plurality of types of attention subjects in the invention described in claim 1, wherein the first and second display control means are the subject. The display means displays an image based on the target subject selected by the selection means.

  According to a third aspect of the present invention, in the first aspect of the present invention, after the first display control means finishes displaying an image, the second display control means starts displaying the next image display. The display unit further includes third display control means for displaying a switching image.

  The invention described in claim 4 is the invention described in claim 3, characterized in that the switching image displayed by the third display control means is monotone and corresponds to the color of the subject of interest.

  The invention described in claim 5 is the invention described in claim 1, characterized in that the subject of interest is any one of a human face, eyes and mouth.

  According to a sixth aspect of the invention, in the first aspect of the invention, the subject of interest is the face of the same person.

  According to a seventh aspect of the invention, in the first aspect of the invention, the subject of interest is a person's face, and the first display control means and the second display control means are different persons as the subject of interest. It is characterized by using the face.

  The invention described in claim 8 is characterized in that, in the invention described in claim 1, the subject of interest is one of a plurality of foods whose shapes and color patterns are prepared in advance.

  The invention according to claim 9 is the invention according to claim 1, wherein the subject of interest is a predetermined area range of a predetermined color.

  According to a tenth aspect of the present invention, in the invention according to the ninth aspect, the subject of interest used in the second display control means has a predetermined direction and sequentially changes the predetermined color every time the image is switched. It is characterized by.

  According to an eleventh aspect of the present invention, there is provided an image display apparatus comprising: a storage unit that stores a plurality of images each including a subject of interest associated with each other; and a display unit that alternatively displays the images stored in the storage unit. An image display method comprising: a detection step of detecting a position of a subject of interest from an image stored in the storage unit; and one image stored in the storage unit sequentially with a focus on the subject of interest obtained in the detection step A first display control step of displaying on the display unit while enlarging to a predetermined magnification; an image selection step of selecting an image to be displayed next to the image displayed in the first display control step from the storage unit; Switching from the state enlarged to the predetermined magnification in the first display control step, the image selected in the image selection step is sequentially changed from the state enlarged to the predetermined magnification around the target object obtained in the detection step. While reduced, characterized in that a second display control step of displaying by the display unit.

  According to a twelfth aspect of the present invention, there is provided a built-in image display apparatus including a storage unit that stores a plurality of images each including a subject of interest associated with each other, and a display unit that selectively displays the images stored in the storage unit. A detection step for detecting the position of a subject of interest from an image stored in the storage unit, and a subject of interest obtained in the detection step for one image stored in the storage unit. A first display control step for displaying on the display unit while sequentially enlarging the image to a predetermined magnification, and an image for selecting an image to be displayed next to the image displayed in the first display control step from the storage unit The detection step is switched to the image selected in the image selection step by switching from the state of enlargement to a predetermined magnification in the selection step and the first display control step. While sequentially reducing the target object obtained in-up from a state of being expanded to a predetermined ratio to the center, characterized in that to execute a second display control step of displaying by the display unit to the computer.

  According to the present invention, at the time of executing the slide show function, the subjects of interest that are related to each other are sequentially enlarged and displayed, and the display is switched to the display state of the next image in which the subject of interest is enlarged to the predetermined magnification. As a result, the display image can be switched more naturally.

Hereinafter, an embodiment when the present invention is applied to a digital camera will be described with reference to the drawings.
FIG. 1 shows a conceptual configuration of an electronic circuit of the entire digital camera 10 according to the embodiment.
In the drawing, in the monitoring state in the photographing mode, the position of a part of the lenses in the photographing lens optical system 12, specifically the zoom lens and the focus lens, is appropriately moved by driving the motor (M) 11. A CCD 13 that is a solid-state imaging device is disposed at an imaging position behind the photographing optical axis of the photographing lens optical system 12 via a mechanical shutter (not shown).

  The CCD 13 is scanned and driven by a timing generator (TG) 14 and a CCD driver 15 and outputs a photoelectric conversion output corresponding to a light image formed at fixed intervals for one screen.

  In the AGC / SH (Auto Gain Control / Sample Hold) circuit 16, this photoelectric conversion output is automatically gain-adjusted according to the ISO sensitivity set for each primary color component of RGB in the state of an analog value signal. After being sampled and held, it is sent to the A / D converter 17.

  The A / D converter 17 converts analog image data into digital data and outputs the digital data to the color process circuit 18.

  The color process circuit 18 performs color process processing including pixel interpolation processing and γ correction processing on digital image data, generates digital luminance luminance / chrominance image data YUV by matrix conversion, and then performs DMA (Direct Memory Access). ) Output to the controller 19.

  The DMA controller 19 once writes the image data YUV output from the color process circuit 18 into a buffer inside the DMA controller 19 using the composite synchronization signal, the memory write enable signal, and the clock signal from the color process circuit 18 as well. DMA transfer is performed to a DRAM 21 used as a buffer memory via an interface (I / F) 20.

  The control unit 22 is composed of a CPU and a main memory used as a work memory, and a necessary program from a non-volatile memory 23 in which an operation program including a reproduction operation, which will be described later, and data are fixedly stored. The control operation of the entire digital camera 10 is governed while the necessary programs and data are temporarily expanded and written in the main storage memory.

  Thus, after the DMA transfer of the image data to the DRAM 21 is completed, the control unit 22 reads the image data from the DRAM 21 via the DRAM interface 20 and writes it to the VRAM 25 via the display controller 24.

  The display controller 24 periodically reads the image data from the VRAM 25 and outputs it to the display unit 26.

  The display unit 26 includes a color liquid crystal panel with a backlight and a diagonal size of about 3 inches disposed on the rear surface of the housing of the digital camera 10 and a driving circuit thereof. The display unit 26 functions as an electronic viewfinder in the shooting mode, and performs display based on image data from the display controller 24, thereby displaying in real time an image captured from the display controller 24 in real time. To do. On the other hand, the display unit 26 reproduces and displays the selected image or the like in the reproduction mode.

  In this way, a part of the key input unit 27 is configured at a timing at which a still image is to be captured in a so-called through image display state in which the image of the subject at that time is displayed in real time on the display unit 26 as a monitor image. When a shutter key is operated, a trigger signal is generated from the key input unit 27.

  In response to the trigger signal, the control unit 22 cancels the DMA transfer of the luminance and color difference signals for one screen currently captured from the CCD 13 to the DRAM 21, and is not shown at a shutter speed according to the appropriate exposure conditions. The mechanical shutter and the CCD 13 are driven to obtain luminance and color difference signals for one screen and transfer them to the DRAM 21. Thereafter, this path is stopped and the state is changed to the storage and storage state.

  In this storage and storage state, the control unit 22 outputs the image data YUV for one frame written in the DRAM 21 to 8 pixels × 8 pixels for each of Y, U, and V components via the DRAM interface 20. The data is read in units called basic blocks and written into the image processing unit 28. The image processing unit 28 converts image data into a predetermined image format, for example, ADCT (Adaptive Discrete Cosine Transform: Adaptive Discrete Cosine Transform) according to JPEG (Joint Photographic Coding Experts Group), Huffman coding or the like. The data is compressed by the data compression process.

  Then, the obtained code data is read out from the image processing unit 28 as a data file for one image, and written into a memory card 29 which is a recording medium that is detachably attached to the digital camera 10.

  Then, along with the compression processing of the luminance and color difference signals for one frame and the writing of all the compressed data to the memory card 29, the control unit 22 activates the path from the CCD 13 to the DRAM 21 again.

  The control unit 22 is further connected to the key input unit 27, the audio processing unit 30, the flash drive unit 31, and the USB interface 32 described above.

  The key input unit 27 includes a power key, a zoom key, a shooting mode key, a playback mode key, a cursor key, a set key, a menu key, a macro key, a flash key, and the like in addition to the shutter key. The key input signal associated with is transmitted directly to the control unit 22.

  The sound processing unit 30 includes a sound source circuit such as a PCM sound source, and at the time of recording sound, the sound processing unit 30 digitizes the sound signal input from the microphone unit 33 disposed on the front surface of the digital camera 10, and has a predetermined data file format. For example, the data is compressed according to MP3 (Moving Picture Coding Experts Group-1 audio layer 3) standard, and an audio data file is created and sent to the memory card 29.

  On the other hand, the audio processing unit 30 uncompresses and converts the audio data file read from the memory card 29 during audio reproduction into an analog signal, and a speaker unit 34 provided on the back side of the digital camera 10 as with the display unit 26. Drive to emit loud sounds.

  The flash drive unit 31 charges a flash driving large-capacitance capacitor (not shown) at the time of still image shooting, and uses the flash light emitting unit 35 formed of a xenon discharge tube or the like based on the control from the control unit 22 as shooting timing. Synchronously drive the flash.

  However, when shooting of a moving image instead of a still image is selected in the shooting mode, the above-described still image data is acquired and the image processing unit 28 compresses the data when the first shutter key is operated. Then, a series of operations of storing in the memory card 29 is started as a continuous execution at an appropriate frame rate, for example, 30 [frame / second], and the shutter key is operated for the second time, or a predetermined operation is performed. When a time limit, for example, 30 seconds elapses, the series of still image data files are collectively set as a motion JPEG data file (AVI file).

  Further, in the playback mode, the control unit 22 selectively reads out the image data stored in the memory card 29, and the image data is compressed in a procedure completely opposite to the procedure in which the image processing unit 28 compresses the data in the shooting mode. The decompressed image data is held in the DRAM 21 via the DRAM interface 20, the contents held in the DRAM 21 are stored in the VRAM 25 via the display controller 24, and the image data is periodically read out from the VRAM 25. A video signal is generated and reproduced on the display unit 26.

  If the selected image data is not a still image but a moving image, playback of the individual still image data constituting the selected moving image file is executed continuously in time at a predetermined frame rate, and the last still image is When the data reproduction is finished, the data is reproduced and displayed using only the still image data positioned at the head until the next reproduction instruction is given.

  The USB interface 32 performs transmission and reception with various external devices such as a personal computer and a printer connected to the USB terminal 36 in accordance with the USB (Universal Serial Bus) standard.

Next, the operation of the above embodiment will be described.
FIG. 2 shows the processing contents when the slide show function is executed in the playback mode. All the operation control is executed by the control unit 22 by expanding the operation program stored in the nonvolatile memory 23 in the main memory in advance. To do.

  When the execution of the slide show function is instructed, the control unit 22 sets various initial conditions for executing the slide show (step M01).

  FIG. 3 shows the processing contents of the subroutine relating to the various initial condition settings. At the beginning, depending on whether or not a slide show table in which various conditions are set is already stored in the nonvolatile memory 23, the condition is determined. Is determined (step S01).

  If it is determined that the slide show table is not yet stored, a subject (hereinafter referred to as “target subject”) associated with each other at the time of image switching is first selected from a plurality of candidates in order to create a new table. And set (step S02).

In this case, for example, “Please select one subject of interest” on the display unit 26.
-Face of (unspecified) person
・ (Unspecified) person's eyes
・ Mouth of (unspecified) person
-Face of (identical) person
・ (Identical) human eyes
・ (Same) person's mouth
↑ ↓: Select / SET: Setting ”
By prompting the user to select the target object selected by the operation of the “SET” key of the key input unit 27, the target subject selected is displayed.

  Next, the user is prompted to select whether or not to perform the operation A for enlarging the subject of interest in the pre-switching image, and the set result is set (step S03).

Next, the user is prompted to select whether or not to perform the operation B for displaying, for example, a monotone image (hereinafter referred to as “switching image”) indicating the middle of the switching, and the set result is set (step) S04).
Based on the set result, it is determined whether or not the operation B for displaying the switching image is selected (step S05).

  Here, only when it is determined that the operation B has been selected, one switching image is subsequently selected from a plurality of candidates and set (step S06).

In this case, for example, the display unit 26
"Select one color for the switching image
↑ ↓: Select / SET: Setting ”
In addition to a guide message using a character string such as the above, a display capable of selecting three colors of white, black, and the corresponding color of the subject of interest is displayed, prompting the user to select, and selecting by operating the “SET” key of the key input unit 27 Set the focused subject.

  Thereafter, regardless of whether or not the process in step S06 is executed, the user is prompted to select whether or not to perform the operation C for reducing the subject of interest in the post-switching image. Is set (step S07).

  Assuming that the initial conditions have been set as described above, the control unit 22 uses the image processing unit 28 to search for the set target object using all image data stored in the memory card 29 as a result. Then, the slide show table is created and stored in the nonvolatile memory 23, and the subroutine of FIG. 3 is terminated as described above, and the process returns to the main routine of FIG. 2 (step S08).

  Specifically, face detection processing is performed on all still images stored in the memory card 29 and image data of still images located at the beginning of the moving image. If the face, eyes, or mouth of the same person, not an unspecified person, is set as the subject of interest, face recognition processing is performed after the face detection processing, and the same detection frequency (number of image data) is the highest. A person's face or the eyes and mouth constituting the face are selected as the subject of interest.

  The face detection technology and the face recognition technology are described in detail in Japanese Patent Application Laid-Open No. 2006-202049, Japanese Patent Application Laid-Open No. 2006-113658, and the like. After detecting the facial image pattern of the person (from the front) as the processing, the facial features are identified by the “direction” and “interval” around the eyes and mouth where the individual features appear prominently. In this embodiment, the image processing unit 28 executes the processing under the control of the control unit 22.

  FIG. 4 illustrates a part of the contents of the slide show table created in this way. In this case, the file name and the coordinates of the center position of the target object are stored as a result of detecting and recognizing the target object from the eight pieces of image data. Together with these stored contents, information indicating whether or not each of the operations A to C is executed is stored with the set contents.

  If it is determined in step S01 that the slide show table has already been stored and the conditions have been set, it is then confirmed whether or not new conditions are to be set (step S09).

If it is determined that a new condition is to be set, the process proceeds from step S02.
On the other hand, if it is determined in step S09 that no new condition is set, the content of the already set condition is reset as it is (step S10), and the processing in steps S02 to S07 is performed. Execution is omitted, and the process directly proceeds to step S08.

  In the main routine of FIG. 2, following the condition setting process in step M01, one image data is read based on the created slide show table (step M02) and displayed on the full screen on the display unit 26 (step S02). M03), and waits for a predetermined time, for example, 5 [seconds] to elapse (step M04).

  Thus, after the entire read image data is displayed on the display unit 26 for a predetermined time, it is determined whether or not the execution of the operation A for enlarging and displaying the target subject portion is set (step M05).

  Only when it is determined that the execution of the operation A is set here, a predetermined magnification, for example, 1 is set based on the center position coordinates of the subject of interest stored in the slide show table as a pair with the file name of the image. The image is enlarged and displayed at a magnification of 5 times (step M06), and it is recognized that the magnification after the enlargement has not reached a predetermined maximum magnification, for example, 20 times (step M07), and then the process returns to step M06. Repeat the process of returning.

  In this way, the enlarged display is successively executed step by step with the target subject as the center of the image until the image reaches a predetermined maximum magnification.

  If it is determined in step M05 that the operation A is not set, the sequential enlargement display process centering on the subject of interest that repeats the processes in steps M06 and M07 is omitted.

  Accordingly, when the predetermined maximum enlargement magnification of the image is reached, this is determined in step M07, and it is then determined whether or not the execution of the operation B for displaying the switching image is set (step M08). .

  Here, only when it is determined that the operation B is set, the display unit 26 displays the monotone switching image on the full screen (step M09), and a predetermined time, for example, 0.5 [seconds] is displayed. Wait for the time to elapse (step M10).

  At this time, when the switching image is not white or black but the corresponding color of the subject of interest, the control unit 22 uses the maximum magnification of the subject of interest displayed in the immediately preceding step M06. An average color is calculated from the image of the image, and a monotone image with the calculated average color is displayed on the display unit 26 as a switching image for a predetermined time.

  If it is determined in step M10 that the switching image has been displayed for a predetermined time, or if it is determined in step M08 that the operation B has not been set, then, from the maximum enlarged state of the target subject portion of the image after switching. It is determined whether or not the execution of the operation C for sequentially reducing and displaying is set (step M11).

  Here, only when it is determined that the operation C is set, the next image data is read based on the slide show table (step M12), and an enlarged image having the maximum magnification as the center of the subject of interest is created (step S12). M13) and display on the display unit 26 (step M14).

  Thereafter, the image is reduced and displayed at a predetermined magnification, for example, 1 / 1.5 based on the coordinates of the center position of the subject of interest (step M15), and the reduced magnification has reached the original magnification of 1 ×. After recognizing that there is not (step M16), the process of returning to step M15 again is repeatedly executed.

  In this way, reduction display is successively executed step by step with the target subject as the center of the image until the image becomes one time the original image.

  If it is determined in step M11 that the operation C is not set, the processes in steps M12 to M16 are omitted, and the next image data is simply read based on the slide show table (step M17). The information is displayed on the display unit 26 as it is (step M18).

  Thus, a predetermined time has elapsed from the time when it is determined in step M16 that the reduced magnification has reached the original magnification of 1 or the next image data is read and displayed on the display unit 26 as it is in step M18. For example, it waits for 5 seconds to elapse (step M19).

  Thus, after the next image data is displayed at the original magnification (1 ×) for a predetermined time, the slide show table is referred to switch the display to the next image data, and it is determined whether there is the next image data. (Step M20).

  In the slide show function, there are a case where the recorded image data is displayed in the order in which they are sequentially recorded and a case where a series of image data is selected at random and displayed. However, when a series of image data is displayed all at once, the same display is repeated again. In this step M20 as well, the process proceeds from step M05 to prepare for switching to the next image data.

  In addition, the slide show function is set to limit the number of repeated display times or the display time, and when the setting condition is met, or when any key operation is performed at the key input unit 27, the slide show is performed at step M20. It is determined that the function is finished, and the main routine of FIG.

  FIG. 5 illustrates a transition state from the sequential enlarged display of the subject of interest by the operation A to the sequential reduced display of the subject of interest by the operation C.

  Here, it is assumed that the eyes of the same person are selected as the subject of interest, and the case where the left eye of the left person image in FIGS. 5A and 5H is selected is shown. In this case, after the image shown in FIG. 5 (A) is fixed and displayed for a predetermined time, transition is made to the state of sequential enlarged display centering on the subject of interest as shown in FIGS. 5 (B) and 5 (C). To do.

  Then, the image data is switched to the next with the predetermined enlargement magnification shown in FIG. 5D being displayed on the entire screen almost after the ground subject, and the same subject of interest in the next image data is changed to the predetermined enlargement magnification. From the state shown in FIG. 5E displayed this time, the state gradually changes to a state of reduced display centered on the subject of interest as shown in FIGS. 5F and 5G.

  Then, in the state of FIG. 5H in which the enlargement magnification is the original image, the process of fixing and displaying for a predetermined time is repeatedly executed while sequentially switching the image data.

  In this way, when the slide show function is executed, the subject of interest set in advance is sequentially enlarged and displayed, and the display is switched to the display state of the next image in which the same subject of interest is enlarged to the predetermined magnification. Therefore, the display image can be switched more naturally.

  In the above embodiment, the user can select and set any one of a plurality of target subjects as the target subject.

  As a result, for example, by selecting and setting a person's face or one of the organs constituting the face, such as eyes and mouth, as the subject of interest, a slide show display reflecting user preferences can be realized. .

  In the above embodiment, the monotone switching image is temporarily displayed while switching from the image in which the target subject portion is maximized to the next image in which the target subject portion is enlarged to a predetermined magnification. Display.

  By inserting such a switching image, the switching timing of the image can be expressed by a monotonous image that does not cause a sense of incongruity.

  In this case, a monotone image such as white, black, gray, or blue may be used as the switching image. However, the average color of the entire screen obtained in a state where the subject of interest is maximized as in the above embodiment. Alternatively, the switching timing can be expressed more comfortably by using an intermediate color or the like calculated from two average colors of the entire screen obtained in a state where each target object before and after switching is enlarged to the maximum.

  The enlarged display of the subject of interest before switching (operation A), the display of the switching image (operation B), and the reduced display of the subject of interest after switching (operation C) are shown in FIGS. 2 and 3, respectively. As shown, the setting may be arbitrarily canceled without executing it.

  As a result, the feeling of discomfort at the time of image switching varies from one user to another, and can be adjusted as appropriate according to the user's preference.

  In the above embodiment, the face of a person or the eyes and mouth constituting the person can be selected as the subject of interest. In recent years, using the face detection technology from images, which has been put to practical use to the level installed in general consumer products, the person who is the main subject is used as a display switching key, especially in the field of digital cameras, etc. However, switching of images can be performed very naturally.

  In that case, an unspecified person may be selected, or the same person from face recognition technology that calculates personal feature information (direction and interval of feature points of each facial organ) in combination with face detection technology as necessary. Therefore, it is possible to switch images more naturally and without a sense of incongruity.

  Although not set in the above embodiment, since the same person can be determined by the face recognition technology as described above, the face of the person who is different before and after the switching is selected and the images are switched. It is good also as what displays.

  By doing this, it is possible to increase the variations of the slide show function, such as viewing the slide show display while analogizing what person will be displayed next, and performing various displays.

  Furthermore, on the premise that a plurality of target subjects are detected from one image data, the size of the target subject that can be detected is also noted, and the subject that can be detected most greatly Before switching and after switching, such as when one of the subjects that can be detected the smallest is sequentially enlarged before switching the image, and the other is used when sequentially reducing the image from the most enlarged state after switching the image. It is also conceivable to set a plurality of image portions to be used as the subject of interest.

  FIG. 6 exemplifies the contents of the slide show table when such a setting is performed. By executing display control in accordance with the contents of the slide show table, for example, the largest image appears in the image before switching. The slide show is such that the face of the person in question is enlarged and the face of the person who is in the most enlarged state is reduced and displayed in the reduced size after switching. Various functions can be displayed by increasing the number of functions.

  In addition, the above-described contents are those using face detection technology and face recognition technology from the image, but the present invention does not depend on this, for example, by pattern matching technology of image processing, the shape and color patterns can be changed. The image may be switched by recognizing one of a plurality of foods prepared in advance, and this can also increase the variation of the slide show function and perform various displays.

  Furthermore, not only the transition from the most visible one to the smallest one as described above, but also from the largest one to the largest one, or from the smallest one to the most. You may make it change to what is reflected small.

  In addition, by setting a combination of a plurality of attention subjects that seem to be related, for example, “food” and “mouth”, “person” and “vehicle”, etc., one attention subject of the combination in the image before switching The slide show function variation has been increased, such as displaying a monotone in the middle color of the two target subjects in the switching image after the zoomed-in display, and successively reducing the other target subject in the most enlarged state after switching. And various displays can be performed.

  Furthermore, it is not a process that seems to be a relatively heavy image processing load such as detection and recognition of image patterns as described above, but a feature extraction with a light load that detects a predetermined color in a predetermined area range. It is good.

  For example, in a predetermined area range of “vertical 20 dots × horizontal 20 dots”, an area in which an R (red) component is greater than or equal to a predetermined value as compared to components of primary colors G (green) and B (blue) is included in the image. , The slide show function can be realized in a form that is very easy to understand visually with simple image processing, such as sequentially switching images with the same color “red”.

  In this case, the predetermined color may be sequentially changed every time the image is switched with a predetermined directionality, instead of continuously switching the image with the same color component.

  Specifically, for example, the predetermined colors from “red” having a long wavelength to “purple” having a short wavelength are sequentially changed in order of “red”, “orange”, “yellow”, “green”, “blue”, “indigo”, and “purple”. Or change the direction from light to dark with a focus on only the luminance value, and switch the direction alternately, so that “red” → “purple” → “ Increased variations of the slide show function, such as changing the switching condition cyclically like “Red” → “Purple” → …… (“Bright” → “Dark” → “Bright” → “Dark” → ……) And various displays can be performed.

  Further, the above-mentioned “operation A”, “operation B”, and “operation C” are not necessarily all provided, and may be configured to hold only one of them. Even with such a configuration, it can be considered that the images are switched more naturally than the configuration in which the images are simply switched.

  Although the above embodiment has been described with respect to an embodiment when applied to a digital camera, the present invention is not limited to a digital camera, and is not limited to a digital camera. Various functions such as a photo stand and an image storage / viewer, and a function realized by software in these apparatuses may be used.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the functions executed in the above-described embodiments may be combined as appropriate as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination according to a plurality of disclosed structural requirements. For example, even if several constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the effect can be obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

1 is a block diagram showing a functional configuration of an electronic circuit of a digital camera according to an embodiment of the present invention. The flowchart of the main routine which shows the processing content at the time of the slide show display which concerns on the embodiment. The flowchart of the subroutine which shows the content of the initial condition setting process of FIG. 3 which concerns on the embodiment. The figure which illustrates the content of the image table produced in a non-volatile memory by the subroutine of FIG. 3 which concerns on the embodiment. The figure which illustrates the state of the slide show display which concerns on the embodiment. The figure which illustrates the other content of the image table produced in a non-volatile memory by the subroutine of FIG. 3 which concerns on the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Digital camera, 11 ... Motor (M), 12 ... Shooting lens optical system, 13 ... CCD, 14 ... Timing generator (TG), 15 ... CCD driver, 16 ... AGC / SH circuit, 17 ... A / D conversion 18 ... color process circuit, 19 ... DMA controller, 20 ... DRAM interface (I / F), 21 ... DRAM, 22 ... control unit, 23 ... non-volatile memory, 24 ... display controller, 25 ... VRAM, 26 ... display 27 ... Key input unit, 28 ... Image processing unit, 29 ... Memory card, 30 ... Audio processing unit, 31 ... Flash drive unit, 32 ... USB interface, 33 ... Microphone unit, 34 ... Speaker unit, 35 ... Flash emission Part, 36 ... USB terminal.

Claims (12)

Storage means for storing a plurality of images each including a subject of interest related to each other;
Display means for alternatively displaying images stored in the storage means;
Detection means for detecting the position of the subject of interest from the image stored in the storage means;
First display control means for displaying on the display means while sequentially enlarging the image of interest obtained by the detection means to a predetermined magnification with respect to one image stored in the storage means;
An image selection means for selecting an image to be displayed next to the image displayed by the first display control means from the storage means;
Switching from the state enlarged to the predetermined magnification by the first display control means, and sequentially reducing the image selected by the image selection means from the state enlarged to the predetermined magnification around the target object obtained by the detection means An image display device comprising: second display control means for displaying on the display means. A subject selecting means for selecting one of a plurality of types of attention subjects;
2. The image display apparatus according to claim 1, wherein the first and second display control means cause the display means to display an image based on the subject of interest selected by the subject selection means.   The third display control unit displays a switching image between the first display control unit and the second display control unit until the display of the next image is started. The image display apparatus according to claim 1, further comprising display control means.   4. The image display apparatus according to claim 3, wherein the switching image displayed by the third display control means is monotone and corresponds to the color of the subject of interest.   The image display apparatus according to claim 1, wherein the subject of interest is any one of a human face, eyes, and mouth.   2. The image display device according to claim 1, wherein the subject of interest is the face of the same person.   2. The image display apparatus according to claim 1, wherein the subject of interest is a human face, and different human faces are used as the subject of interest in the first display control means and the second display control means. .   2. The image display apparatus according to claim 1, wherein the subject of interest is one of a plurality of foods having a shape and a color pattern prepared in advance.   2. The image display device according to claim 1, wherein the subject of interest is a predetermined area range of a predetermined color.   10. The image display apparatus according to claim 9, wherein the subject of interest used in the second display control means sequentially changes the predetermined color every time the image is switched with a predetermined directionality. An image display method in an image display device comprising: a storage unit that stores a plurality of images each including a subject of interest associated with each other; and a display unit that alternatively displays an image stored in the storage unit,
A detection step of detecting the position of the subject of interest from the image stored in the storage unit;
A first display control step of displaying on the display unit while sequentially enlarging to a predetermined magnification centering on the subject of interest obtained in the detection step with respect to one image stored in the storage unit;
An image selection step of selecting an image to be displayed next to the image displayed in the first display control step from the storage unit;
Switching from the state enlarged to the predetermined magnification in the first display control step, the image selected in the image selection step is sequentially reduced from the state enlarged to the predetermined magnification around the subject of interest obtained in the detection step. And a second display control step for displaying on the display unit. A program executed by a computer built in an image display device including a storage unit that stores a plurality of images each including a subject of interest associated with each other, and a display unit that alternatively displays images stored in the storage unit There,
A detection step of detecting the position of the subject of interest from the image stored in the storage unit;
A first display control step of displaying on the display unit while sequentially enlarging the image of interest stored in the detection step to a predetermined magnification with respect to one image stored in the storage unit;
An image selection step of selecting an image to be displayed next to the image displayed in the first display control step from the storage unit;
Switching from the state enlarged to the predetermined magnification in the first display control step, the image selected in the image selection step is sequentially reduced from the state enlarged to the predetermined magnification around the subject of interest obtained in the detection step. A program for causing a computer to execute a second display control step to be displayed on the display unit.

Images