JP2011040951A - Image processor, image processing method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display as many representative images as possible within a short period of time. <P>SOLUTION: When information on reduced images exists in an image file, a priority is set to 1, and in the other cases, the priority is set to 2 or 3 according to the size of the image file. First, representative images of the priority 1 which have a short processing time are displayed, and then, representative images of the priority 2 are displayed. Representative images of the priority 3 which require a long processing time are lastly displayed, which enables a user to immediately check what kinds of images are recorded. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image processing apparatus, an image processing method, and a program, and more particularly, to a technique suitable for use in displaying a representative image.

  Conventionally, in a device such as a video camera or a DVD recorder, when reproducing moving image data or still image data recorded on a recording medium, a list screen of representative images is displayed. Then, the user selects a desired image from the representative images displayed in a list, and has a function of reproducing the original moving image data and still image data by instructing reproduction (for example, see Patent Document 1). ). At this time, the recorded moving image data or still image data is reproduced, and the size is converted into a size suitable for the representative image and displayed.

JP 2004-206774 A

  When the representative image is generated and displayed as described above, the larger the data amount of the original moving image or still image, the longer it takes to reproduce from the recording medium. You will have to wait. As a result, when the representative images are displayed in the determined order, the next representative image is not displayed until the representative image having such a large amount of data is displayed. Therefore, the next representative image has a small data amount. Even if it is a representative image of an image, it will wait for a long time until it is displayed. It should be noted that a certain number of representative images must be displayed in order to check what images are recorded. For this reason, when an image with a large amount of data is recorded, there is a problem that the user cannot immediately confirm what kind of image is recorded.

  In view of the above-described problems, an object of the present invention is to display more representative images in a short time.

  An image processing apparatus according to the present invention displays on a display unit a generation unit that generates representative image data based on image data recorded on a recording medium, and a representative image based on the representative image data generated by the generation unit. A display unit; a determination unit that determines a time required for displaying the representative image on the display unit; and a determination unit that determines an order of displaying the representative image on the display unit according to a determination result of the determination unit. It is characterized by having.

  According to the present invention, when a plurality of representative images are to be displayed on the display screen, more representative images can be displayed in a short time. Thereby, the user can immediately confirm what kind of image is recorded.

It is a block diagram which shows the structural example of the digital video camera which concerns on embodiment. It is a block diagram which shows the detailed structural example of a system control part. It is a flowchart which shows an example of the process sequence which determines a priority and displays a representative image. It is a flowchart which shows an example of the process sequence which determines a priority. It is a figure which shows the structural example of the data in a recording medium. It is a figure which shows an example of a priority management table. It is a flowchart which shows an example of the process sequence which displays a representative image. It is a figure which shows an example of the representative image displayed on the display part. It is a figure which shows an example of a priority determination table.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention can be applied to devices capable of displaying moving images or still images, such as video cameras, digital still cameras, mobile phones, personal computers, and televisions.

FIG. 1 is a block diagram illustrating a configuration example of a digital video camera 100 according to the present embodiment.
As shown in FIG. 1, the digital video camera 100 includes an imaging unit 101, a video signal processing unit 102, an audio signal processing unit 103, a microphone 104, a system control unit 105, a frame memory 106, and a memory 107. Furthermore, a video / audio codec 108, a stream buffer 109, a recording / playback control unit 110, an internal recording medium 111, an external recording medium 112, an operation unit 113, a display unit 114, a multiplexing processing unit 115, and a still image codec 116 are provided. ing.

  The video signal processing unit 102 performs A / D conversion and appropriate image processing on the video signal obtained by the imaging unit 101. The microphone 104 captures external audio, and the audio signal processing unit 103 performs A / D conversion and appropriate signal processing on the audio signal obtained by the microphone 104. The system control unit 105 executes a program and performs various processes to control the entire digital video camera 100. The frame memory 106 stores moving image data and audio data obtained by photographing at the time of recording until they are encoded and multiplexed. Further, at the time of reproduction, the video data and audio data which are demultiplexed and decoded are stored until output.

  The video / audio codec 108 compresses and encodes moving image data and audio data according to a known encoding method such as MPEG. The still image codec 116 compresses and encodes uncompressed still image data according to a predetermined compression format such as JPEG. The memory 107 is a memory for temporarily storing information used by the system control unit 105.

  The recording / playback control unit 110 controls recording and playback with respect to the internal recording medium 111 and the external recording medium 112. The external recording medium 112 is a detachable recording medium. Specifically, it is a memory card such as MMC, SD, CompactFlash (registered trademark), PC card, or an optical (or magneto-optical) recording medium such as a hard disk, CD-RW, DVD-R / RW, or MD. . The external recording medium 112 can be easily mounted on and discharged from the digital video camera 100 by a recording medium mounting / discharging mechanism (not shown). The built-in recording medium 111 is a recording medium built in the main body of the digital video camera 100, and has a configuration that cannot be easily replaced by a user due to the mounting and discharging mechanisms described above. The built-in recording medium 111 may be the same as the external recording medium 112 built in the main body, or may be a flash memory such as NAND or NOR. In the present embodiment, stream data and still image data are recorded or reproduced on the internal recording medium 111 or the external recording medium 112.

  In this embodiment, both the internal recording medium 111 and the external recording medium 112 are random access recording media, and all data recorded on each recording medium is managed as a file as will be described later. The recording / playback control unit 110 manages data to be recorded in accordance with a file system corresponding to each format of the internal recording medium 111 and the external recording medium 112.

  The operation unit 113 is an interface for instructing recording or reproduction according to a user operation. In addition, the operation unit 113 instructs the digital video camera 100 to make settings or the like in accordance with a user operation. The display unit 114 has a display device such as a liquid crystal panel, and displays video input from the imaging unit 101 during recording, and displays video played back by the recording / playback control unit 110 during playback. It also has a function of displaying a setting menu for the digital video camera 100 and the like. A multiplexing processing unit (multiplexer / demultiplexer) 115 multiplexes the compressed and encoded moving image data and audio data at the time of recording to generate stream data, and demultiplexes the stream data at the time of reproduction to demultiplex the moving image data and audio. Generate data. The stream buffer 109 holds multiplexed stream data.

  When the digital video camera 100 of the present embodiment is turned on by the operation unit 113, the digital video camera 100 starts to operate in the shooting mode, and the moving image obtained by the imaging unit 101 is displayed on the display unit 114. The When the operation unit 113 is operated to switch to the playback mode, the digital video camera 100 switches to the playback mode. When switching to the playback mode or when there is an instruction to display a representative image (index) list, a list screen of representative images recorded on the internal recording medium 111 or the external recording medium 112 is displayed as described later. It is displayed on the display unit 114.

  When shooting (recording) a moving image, upon receiving a moving image recording instruction from the operation unit 113, the video signal obtained by the imaging unit 101 is converted into digital data (moving image data) by the video signal processing unit 102. Store in the frame memory 106. At this time, the audio signal acquired by the microphone 104 is also converted into digital data (audio data) by the audio signal processing unit 103 and stored in the frame memory 106. The video / audio codec 108 compresses moving image data and audio data stored in the frame memory 106, multiplexes them by the multiplexing processing unit 115, and stores them as stream data in the stream buffer 109. Then, the recording / playback control unit 110 records the stream data stored in the stream buffer 109 on the internal recording medium 111 or the external recording medium 112 as a moving image file.

  The user operates the operation unit 113 to select one of the internal recording medium 111 and the external recording medium 112, and records the moving image file on the selected recording medium. Then, when there is an instruction to stop recording, the recording of the stream data is stopped. In the present embodiment, the moving image and audio stream data of one scene recorded between the instruction to start shooting and the instruction to stop shooting are recorded as one file.

  On the other hand, when shooting (recording) a still image, upon receiving a still image recording instruction from the operation unit 113, the video signal obtained by the imaging unit 101 is converted into digital data (still image data) by the video signal processing unit 102. The data is converted and stored in the frame memory 106. The still image codec 116 encodes the still image data stored in the frame memory 106 in accordance with the target compression rate designated by the system control unit 105, and stores the encoded still image data in the memory 107. Then, the recording / playback control unit 110 records the still image data stored in the memory 107 as a still image file on the internal recording medium 111 or the external recording medium 112.

  When reproducing a moving image in the reproduction mode, upon receiving a reproduction instruction from the operation unit 113, the system control unit 105 performs the following control. First, the moving image file is reproduced from the internal recording medium 111 or the external recording medium 112, and the recording / reproduction control unit 110 is controlled to store the stream data stored in the file in the stream buffer 109. At this time, the user operates the operation unit 113 to select one of the internal recording medium 111 and the external recording medium 112, and reproduces a moving image file from the selected recording medium. The multiplexing processing unit 115 separates the stream data stored in the stream buffer 109 into moving image data and audio data. Then, the video / audio codec 108 decodes the separated moving image data and audio data and stores them in the frame memory 106. The expanded moving image data is subjected to appropriate signal processing by the video signal processing unit 102 and displayed as a moving image on the liquid crystal panel of the display unit 114. Further, the developed audio data is subjected to appropriate signal processing by the audio signal processing unit 103 and is output as audio from a speaker (not shown). When there is an instruction to stop playback, playback of stream data from the recording medium is stopped. When the reproduction is stopped, the representative image list screen is displayed on the display unit 114 as described later.

  On the other hand, when reproducing a still image, upon receiving a reproduction instruction from the operation unit 113, the system control unit 105 reproduces still image data from the internal recording medium 111 or the external recording medium 112 and stores it in the memory 107. The recording / reproducing control unit 110 is controlled. The still image codec 116 decodes the still image data stored in the memory 107 and stores it in the frame memory 106. Then, it is displayed as a still image on the liquid crystal panel of the display unit 114 under the control of the system control unit 105.

  Further, upon receiving an instruction to switch to the reproduction mode or a list display instruction from the operation unit 113, the system control unit 105 performs the following control. First, the recording / reproducing control unit 110 is controlled to generate representative image data by reproducing image data from the internal recording medium 111 or the external recording medium 112. At this time, for the moving image, for example, representative image data is generated using image data of one frame in the stream such as the first frame of one scene. When a reduced image is included in the moving image file in advance, representative image data may be generated from the reduced image data. If the reduced image can be used as it is as the representative image, it may be used as it is as the representative image data. Then, the system control unit 105 stores the generated representative image data in the memory 107. Next, the representative image data is decoded by the still image codec 116 and stored in the frame memory 106, and the representative image is displayed at a predetermined position of the list display of the display unit 114 under the control of the system control unit 105.

FIG. 2 is a block diagram illustrating a detailed functional configuration example of the system control unit 105 in FIG.
As shown in FIG. 2, the system control unit 105 includes a CPU (not shown) that executes a program, an entry acquisition unit 202, and a priority determination unit 203.

  The entry acquisition unit 202 acquires file and directory entries according to the file systems of the internal recording medium 111 and the external recording medium 112. As will be described later, the priority determination unit 203 determines the time from the start of generation of representative image data to the display of the representative image, and the order in which the representative image data is generated by reading the file (display the representative image). Order).

  FIG. 3 is a flowchart illustrating an example of a processing procedure for displaying the representative image by determining the priority. In the present embodiment, the method for displaying the representative image is roughly divided into two processes. Specifically, a still image file and a moving image file are acquired from the built-in recording medium 111 or the external recording medium 112, and processing for determining display priority (S301), and a representative image is displayed based on the determination result. Processing (S302).

First, the process (S301) of acquiring a still image file and a moving image file and determining the display priority will be described with reference to the flowchart of FIG. FIG. 4 is a flowchart illustrating an example of a processing procedure for determining the priority. 4 is performed under the control of the system control unit 105.
When an instruction to display a representative image is received from the operation unit 113, an entry is acquired (S401). Specifically, first, it is confirmed what kind of file exists in the recording medium.

FIG. 5A is a diagram showing an example of the arrangement of data in the recording medium.
In FIG. 5A, management information parameter data is recorded in the boot sector 501 which is the head area, and a table indicating a file usage status is recorded in the management table 502. In addition, a data area 504 in which image files (still images, moving images) and the like are recorded is arranged. In the data area 504, in addition to image files, files that cannot be handled by the digital video camera 100, subdirectories, and the like are recorded.

FIG. 5B is a diagram showing a configuration example of the root directory 503 in FIG.
As shown in FIG. 5 (b), the root directory 503 is composed of a set of entries of the number of entries recorded in the boot sector 501, and each of entry 0, entry 1, entry 2, and entry consisting of 32 bytes. There are 3, ... As described above, in S 401, the entry acquisition unit 202 of the system control unit 105 reads out all entries recorded in the internal recording medium 111 or the external recording medium 112 via the recording / playback control unit 110 and stores them in the memory 107. To do.

  In addition, the system control unit 105 generates a priority management table that manages the priority for displaying the representative image. The system control unit 105 generates a priority management file, and writes the contents of the priority management table as a management file in the internal recording medium 111, for example. The priority management table stores information such as entry number, file name, image file format, image width, height, presence / absence of a reduced image, and priority. An entry is counted up each time a file is registered. It should be noted that the management file may not be generated, and equivalent contents such as a priority management table may be held in the memory 107. If there is an area that the user can freely use in the data area 504 of the file system, that area is stored. You may use it to manage priority.

  Next, the system control unit 105 reads the first entry from the entries stored in the memory 107 (S402). Then, it is confirmed whether or not the file corresponding to the read entry corresponds to the digital video camera 100 of the present embodiment and is a reproducible file (S403). The digital video camera 100 of this embodiment is assumed to be compatible with JPEG format or RAW format still image files or MPEG format moving image files. Here, the RAW format still image file is output from an image sensor such as a CCD sensor or a CMOS sensor, digitized without video signal processing, and recorded uncompressed.

  The system control unit 105 acquires information on the extension of the file corresponding to the entry read in S <b> 402 and stores it in the memory 107. Information on the extension of the file format that can be reproduced by the digital video camera 100 of the present embodiment is stored in the memory 107, and it is confirmed whether or not it corresponds to the extension of the read file. If the extension is not compatible as a result of this confirmation, the priority management file is not written, and the process proceeds to S410. Note that the image of the file that has not been written to the priority management file is not displayed in S302 of FIG.

  On the other hand, if the extension corresponds, the recording / playback control unit 110 reads the file header of the file corresponding to this entry from the internal recording medium 111 or the external recording medium 112 (S404). Here, the image file has a file header in which information such as a standard regarding the structure of the image file and parameters of the image data are written, and an image data area in which recording compressed data of image data such as the JPEG standard is written. The system control unit 105 acquires file header information such as the format, compression rate, and resolution of the image file from the parameters relating to the image data, and stores them in the memory 107.

  Next, it is determined whether or not the acquired file header information includes information related to the reduced image (S405). If there is information about a reduced image, a representative image can be generated using the reduced image. For example, some JPEG still image files have a reduced image recorded in the file header as an index display image. In this case, since the reduced image data with a small file size is read, the time for accessing the image file is reduced. In addition, when a representative image is generated from a reduced image, the resolution of the representative image is reduced, so that the decoding time of the representative image is shortened. Therefore, such a representative image is preferentially displayed.

  As described above, when the result of the determination in S405 is that there is information about the reduced image in the file header of the read entry, the time until display is short. Therefore, the priority determination unit 203 of the system control unit 105 sets a predetermined value (here, the highest priority) as the priority of the image file in the priority management file together with the file name and file header information. 1) is written (S406).

  On the other hand, if there is no information regarding the reduced image, it is confirmed whether or not the number of pixels of the image file is equal to or smaller than a predetermined value (S407). In the case of an image having a large number of pixels, since the file size is large, it takes a lot of time to read from the recording medium to generate representative image data and to decode it. Further, since the reduction process is performed when the representative image is generated from the main image, the time required for creating the representative image differs depending on the number of pixels of the original image and the number of pixels of the representative image. In the present embodiment, the number of pixels is set as a threshold here so that a series of processing time until display is within a time period that does not give stress to the user.

  As described above, when the number of pixels is equal to or smaller than the predetermined value, the priority determination unit 203 of the system control unit 105 sets the second priority of the image file in the priority management file together with the file name and header information. A predetermined value (2 in this case) indicating this is written (S408). On the other hand, when the number of pixels of the image file exceeds the threshold, the priority determination unit 203 of the system control unit 105 indicates that the priority management file has the lowest priority together with the file name, header information, and the like. A predetermined value (3 in this case) is written (S409). In this way, the lower the priority, the longer the time required to display the representative image of the image file.

  Next, it is confirmed whether or not the next entry still exists in the root directory 503 (S410). If there is no next entry, the process is terminated. On the other hand, when the next entry exists in the root directory 503, the next entry is acquired from the memory 107 (S411).

FIG. 6 is a diagram showing an example of a priority management table that is generated and determined by the processing of FIG.
As shown in FIG. 6, a high priority is set for a short time from reading from the recording medium to generation and display of the representative image. In FIG. 6, the order of entries is sorted by file name, but the order of entries may be changed by sorting by image file size, date, and the like. As will be described later, in this embodiment, when generating a representative image list screen, the display position of the representative image is determined according to the order described in the management table. In the present embodiment, the method of adding priority on the assumption that all file entries exist in the root directory has been described. However, if the subdirectory is under the root directory, the entries of the files in the subdirectory are also included. Priorities are added in a similar manner. Even when there are a plurality of recording media, priority is determined for each recording medium.

  Next, the process of displaying the representative image based on the priority (S302) will be described with reference to the flowchart of FIG. FIG. 7 is a flowchart illustrating an example of a processing procedure for displaying a representative image based on priority. 7 is performed under the control of the system control unit 105.

  First, the system control unit 105 initializes display conditions (S701). The display condition includes an entry of a representative image to be displayed on the representative image and information on the priority of the representative image to be displayed. For example, as shown in FIG. 8A, when displaying six-screen representative images on one screen, six entries are set as representative image entries in the display order. Here, it is assumed that representative images of six entries are displayed in order from the top entry in the management table of FIG. In addition, a setting for displaying only an image file having a priority of 1 in the priority management table is first performed. Next, the system control unit 105 acquires the top entry of the priority management table from the memory 107 (S702). Then, the system control unit 105 checks whether the priority of the file of the read entry meets the display condition (S703). If the priority does not meet the display conditions, the alternative image stored in advance in the memory 107 is displayed on the display unit 114 (S704). In this embodiment, information indicating that a representative image is being created is displayed as a substitute image.

  On the other hand, when the priority matches the display condition, the recording / playback control unit 110 reads the image file corresponding to the read entry and generates representative image data. Then, the representative image data is decoded by the video / audio codec 108 or the still image codec 116, and the system control unit 105 resizes the image to a desired size and displays the representative image on the display unit 114 (S705). The layout when outputting to the display unit 114 may be arranged in the order of entries in the priority management table shown in FIG. 6, or may be arranged in the order in which the image files are read.

  Next, the system control unit 105 checks whether or not there is a next entry in the priority management table (S706). If there is a next entry, the system control unit 105 reads the next entry in the priority management table from the memory 107 (S707). On the other hand, if there is no next entry, it is checked whether or not all the representative images of the image files having the priorities 1 to 3 have been displayed (S708). In this embodiment, the priority is provided in three stages, but the priority may be set in any number of stages depending on the configuration of the system for displaying an image. On the other hand, when all the representative images of the image files with the priority levels 1 to 3 are not displayed, the priority as a display condition is lowered by 1 (S709). For example, when all the representative images of an image file with a priority of 1 are displayed, the priority as a display condition is lowered and the priority of 2 is set as the display condition. In the present embodiment, the display order is determined by the above procedure.

  After the representative image list screen is displayed in this way, when the user operates the operation unit 113 to instruct switching of the list screen, the processing of FIG. 7 is executed again, and the next list screen is displayed in S701. The entry of the representative image to be set is reset and the representative image is displayed. Further, in the present embodiment, the case where the representative image list screen is displayed in order from the top entry of the management table has been described. However, it is of course possible to display from the middle of the entry.

  FIG. 8A is a diagram illustrating an example of a representative image displayed on the display unit 114 based on the priority management table of FIG. 6 according to the processing procedure of FIG. Note that the example shown in FIG. 8A is at the stage where the display of the representative image is completed for the image file with the priority 1. Further, in FIG. 8A, six representative images are arranged on the display unit 114. However, any number of representative images may be arranged. An image 1001 is a representative image of an image file corresponding to entry 0 in FIG. 6, and an image 1002 is a representative image of an image file corresponding to entry 1 in FIG. Similarly, the image 1003 is the representative image of the entry 2, the image 1004 is the entry 3, the image 1005 is the entry 4, and the image 1006 is the representative image of the entry 5. The screen layout is displayed in order of entry from the upper left to the lower right. For an image file with a priority other than 1, an alternative image of “Waiting for image display” stored in advance in the memory 107 is displayed until the display condition is changed in S709.

  FIG. 8B is a diagram showing another example of the representative image displayed on the display unit 114 based on the priority management table. Similar to the example shown in FIG. The representative image is only displayed. In FIG. 8B, images with similar shooting dates are arranged in a horizontal row, and many images can be efficiently confirmed in a short time. It is more effective when there are many representative images to be displayed.

  In this embodiment, the time required for displaying the representative image is determined based on the presence or absence of the reduced image and the number of pixels of the image, and the priority is set based on the determination result. Other conditions may be used. For example, parameters such as the image data compression method, compression rate, and file size may be one of the conditions.

  In the present embodiment, a method has been described in which a priority management table is generated when an image file entry is acquired, and a representative image is displayed according to the generated priority management table. On the other hand, the representative image may be displayed while acquiring the entry of the image file. In this case, the priority determination table as shown in FIG. 9 is stored in the memory 107 in advance, and when the file name is acquired, the image file is analyzed. For example, the priority determination table includes information such as the presence / absence of a reduced image, the recording medium on which the image file is recorded, and the format of the image file, and is set as a condition for determining the priority. Then, the configuration may be such that the corresponding condition is searched from the priority determination table, it is determined whether or not to display according to the priority of the corresponding condition, and the representative image is displayed when the condition is met.

  As described above, according to the present embodiment, the representative image of the image file having the reduced image is preferentially displayed, and the order of displaying the representative image is determined according to the size of the image file not having the reduced image. I made it. Accordingly, when a plurality of representative images are to be displayed on the display screen, more representative images can be displayed in a short time.

(Other embodiments according to the present invention)
The example of the embodiment of the image processing apparatus according to the present invention has been described above. However, the present invention is not limited to the example of the above-described embodiment, and various aspects can be adopted. Each means constituting the image processing apparatus and each step of the image processing method in the embodiment of the present invention described above can be realized by operating a program stored in a RAM or ROM of a computer. This program and a computer-readable storage medium storing the program are included in the present invention.

  In addition, the present invention can be implemented as, for example, a system, apparatus, method, program, storage medium, or the like. Specifically, the present invention may be applied to a system including a plurality of devices. The present invention may be applied to an apparatus composed of a single device.

  In the present invention, a software program (in the embodiment, a program corresponding to the flowcharts shown in FIGS. 3, 4 and 7) for realizing the functions of the above-described embodiments is directly or remotely supplied to the system or apparatus. This includes cases where This includes the case where the system or the computer of the apparatus is also achieved by reading and executing the supplied program code.

105 System control unit, 110 Recording / playback control unit, 114 Display unit

Claims (10)

Generating means for generating representative image data based on a plurality of image data recorded on a recording medium;
Display means for displaying a representative image based on the representative image data generated by the generating means on a display unit;
Determining the time required for displaying the representative image on the display unit, and displaying the representative image of the plurality of image data on the display unit in an order determined according to the determination result; An image processing apparatus comprising control means for controlling the display means.   The control means determines the order in which the representative images of the plurality of image data are displayed so that the representative image is displayed earlier as the time taken to display on the display unit is shorter. The image processing apparatus according to claim 1.   The control means determines whether or not a plurality of reduced images of the image data are recorded on the recording medium, and sets a representative image of the image data on which the reduced image is recorded as a representative on which no reduced image is recorded. The image processing apparatus according to claim 1, wherein the order is determined so that the image is displayed before the image.   The image processing apparatus according to claim 1, wherein the control unit determines a time taken from when the generation unit starts generating the representative image data to display the representative image on the display unit.   The image processing apparatus according to claim 1, wherein the control unit determines the order according to the number of pixels of the plurality of image data.   The image processing apparatus according to claim 5, wherein the control unit determines the order so that the representative image is displayed earlier as the number of pixels of the image data is smaller.   The image processing apparatus according to claim 1, wherein the control unit stores priority information having a value corresponding to a time required for display on the display unit in association with the plurality of image data. .   When there is an instruction to display the representative image, the control means determines how long it takes to display a representative image of a predetermined number of image data to be displayed on one screen among the plurality of image data on the display unit. The image processing apparatus according to claim 1, wherein the order of the predetermined number of representative images is determined accordingly. A generation step of generating representative image data based on a plurality of image data recorded on a recording medium;
A display step of displaying a representative image based on the representative image data generated in the generation step on a display unit;
Determining the time taken to display the representative image on the display unit, and displaying the representative image of the plurality of image data on the display unit in an order determined according to the determination result; An image processing method comprising: a control step of controlling processing in the display step. A generation step of generating representative image data based on a plurality of image data recorded on a recording medium;
A display step of displaying a representative image based on the representative image data generated in the generation step on a display unit;
Determining the time taken to display the representative image on the display unit, and displaying the representative image of the plurality of image data on the display unit in an order determined according to the determination result; A program for causing a computer to execute a control step for controlling processing in the display step.

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