JPH11259506A - Image processing device and method and record medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To know the reason why a record medium where the image data are recorded in a file form and a size which cannot be reproduced by an image processor cannot reproduce the image data by deciding whether an image data file can be displayed in an image and then displaying the information accordant with the result of the decision. SOLUTION: An image data file is retrieved at and after its head and it's decided whether the head marker is an SOI or not (S5). If the head maker is not the SOI, the corruption of data is decided and characters 'Corrupted Data !' are displayed to show the corruption of data together with a prescribed icon and the file name (S12). When the head marker is an SOI, the next marker is detected (S6). When the next marker is detected, it's decided whether the marker is used to a file that can be supported (S7). If the marker is not used to the said file, the marker cannot be reproduced even with a JPEG file and accordingly displayed as the incompatible format data together with a prescribed icon and the file name (513).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus, an image processing method, and a recording medium for capturing, recording, and reproducing still images and moving images.

[0002]

2. Description of the Related Art Conventionally, an image processing apparatus such as an electronic camera for recording and reproducing a still image and a moving image using a memory card having a solid-state memory element as a recording medium is already on the market.
An electronic camera equipped with an electronic finder such as a color liquid crystal panel is also sold.

According to these electronic cameras, images before photographing are continuously displayed on an electronic viewfinder such as a liquid crystal panel so that the user of the electronic camera can determine the composition and reproduce and display the photographed images. It is possible to confirm.

[0004] In particular, the function of reproducing a photographed image immediately after photographing is highly convenient and is a useful function for a user of an electronic camera.

[0005]

In such a conventional image processing apparatus such as an electronic camera, for example, a recording medium on which an image is already recorded can be set, and the recorded image can be reproduced. The image data that can be recorded on the recording medium includes data from the image pickup device which is recorded as it is without being compressed, and data which is compressed by applying various compression methods, in various different formats. Image data may be recorded on a recording medium.

On the other hand, depending on the image processing apparatus, the image file format (format) that can be reproduced, the size of image data, and the like may be limited. For example, JPEG
Even in the format, there are a plurality of types of encoded files.

Therefore, if an attempt is made to set and reproduce a recording medium on which image data is recorded in a file format (size) and size that cannot be reproduced by the image processing apparatus, the image processing apparatus cannot cope with the situation. The image cannot be reproduced, and for example, nothing is reproduced on the electronic viewfinder. Further, even when the data recorded on the recording medium is destroyed, the image cannot be reproduced, and for example, nothing is reproduced on the electronic finder. In such a case, the user cannot know what causes the image not to be reproduced, which is very inconvenient and difficult to cope with appropriately.

An object of the present invention is to provide an image processing apparatus, an image processing method, and a recording medium which solve the above-mentioned problems.

[0009]

According to a first aspect of the present invention, there is provided an image processing apparatus having an output unit for outputting an image recorded on a recording medium to an image display unit. Searching means for searching for predetermined information in an image data file recorded on a medium; determining means for determining whether or not the image data file is capable of displaying an image based on a search result of the searching means; And control means for causing the image display means to display information corresponding to the determination result of the means.

A second aspect of the present invention is characterized in that, in the first aspect, the image data is compressed image data.

Further, the invention of claim 3 is characterized in that, in claim 2, the compressed image data is compressed according to a JPEG format.

Further, the invention according to claim 4 is characterized in that, in claim 3, the predetermined information in the image data file is at least one of a marker alone and a header attached to the marker.

According to a fifth aspect of the present invention, in the first aspect, the information according to the determination result is at least one of data destruction, incompatibility, excessive size, and no thumbnail image. It is characterized by being.

According to a sixth aspect of the present invention, in the first aspect, the recording medium is detachable from the image processing apparatus.

According to a seventh aspect of the present invention, in the first aspect, the image data file has a hierarchical data structure.
The recording medium is stored in the recording medium so as to be erasable for each layer.

Further, the invention of claim 8 is characterized in that, in claim 7, the hierarchical data includes a thumbnail image.

In a ninth aspect of the present invention, in the first aspect, an image pickup means is further provided.

Further, the invention of claim 10 is characterized in that in claim 1, the image processing apparatus further comprises image display means.

Further, the invention of claim 11 provides claims 1 to 1
0, the control means displays information corresponding to the determination result as an icon.

Further, according to a twelfth aspect of the present invention, predetermined information in an image data file recorded on a recording medium is searched for,
Based on the search result, it is determined whether or not the image data file can display an image, and information according to the result of the determination is displayed.

The invention of claim 13 is characterized in that, in claim 12, the image data is compressed image data.

Further, the invention of claim 14 is characterized in that, in claim 13, the compressed image data is compressed according to a JPEG format.

According to a fifteenth aspect of the present invention, the predetermined information in the image data file is at least one of a marker alone and a header attached to the marker.

Further, the invention of claim 16 is the invention of claims 12 to
In any one of No. 15, the information according to the determination result is information meaning at least one of data destruction, incompatibility, exceeding a size, and no thumbnail image.

Further, the invention of claim 17 is characterized in that, in claim 12, the recording medium is detachable from the image processing apparatus.

The invention of claim 18 is characterized in that, in claim 12, the image data file has a hierarchical data structure, and is stored in the recording medium so as to be erasable for each layer.

Further, the invention of claim 19 is characterized in that, in claim 18, the hierarchical data includes a thumbnail image.

[0028] Further, the invention of claim 20 is the invention of claims 12 to
In any one of the nineteenth aspects, information according to the determination result is displayed as an icon.

According to a twenty-first aspect of the present invention, there is provided a recording medium recording a control program for displaying information related to an image recorded on a recording medium on an image display means, wherein the control program is stored in a computer. Search for predetermined information in the image data file recorded in the
Based on the search result, it is determined whether or not the image data file can display an image, and information according to the determination result is displayed on the image display means.

Further, the invention of claim 22 is characterized in that, in claim 21, the image data is compressed image data.

The invention of claim 23 is characterized in that, in claim 22, the compressed image data is compressed according to a JPEG format.

Further, the invention of claim 24 is characterized in that, in claim 23, the predetermined information in the image data file is at least one of a marker alone and a header attached to the marker.

The twenty-fifth aspect of the present invention provides the twenty-first to twenty-first aspects.
24, the information according to the determination result is information meaning at least one of data destruction, incompatibility, exceeding a size, and no thumbnail image.

Further, the invention according to claim 26 is characterized in that the recording medium according to claim 21 is removable from the image processing apparatus.

Further, the invention of claim 27 is characterized in that, in claim 21, the image data file has a hierarchical data structure, and is stored in the recording medium erasable for each hierarchy.

In a twenty-eighth aspect of the present invention, in the twenty-seventh aspect, the hierarchical data includes a thumbnail image.

Further, the invention of claim 29 is the invention of claims 21 to
28, the information according to the determination result is displayed as an icon.

[0038]

Embodiments of the present invention will be described below with reference to the drawings.

(Configuration of Image Processing Apparatus) FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

In FIG. 1, reference numeral 100 denotes an image processing device.

Reference numeral 10 denotes a photographing lens, 12 denotes a shutter having an aperture function, 14 denotes an image sensor that converts an optical image into an electric signal, and 16 denotes an A / D converter that converts an analog signal output of the image sensor 14 into a digital signal. is there.

Reference numeral 18 denotes an image sensor 14, an A / D converter 16,
This is a timing generation circuit that supplies a clock signal and a control signal to the D / A converter 26, and is controlled by the memory control circuit 22 and the system control circuit 50.

Reference numeral 20 denotes an image processing circuit which performs predetermined pixel interpolation processing and color conversion processing on data from the A / D converter 16 or data from the memory control circuit 22.

Further, in the image processing circuit 20, predetermined arithmetic processing is performed using the captured image data, and based on the obtained arithmetic result, the system control circuit 50 sends the information to the exposure control means 40 and the distance measurement control means 42. TT that controls
L (through the lens) type AF (auto focus) processing, AE (auto exposure) processing, and EF (flash pre-emission) processing are performed.

Further, the image processing circuit 20 performs predetermined arithmetic processing using the captured image data, and also performs TTL AWB (auto white balance) processing based on the obtained arithmetic result.

Reference numeral 22 denotes a memory control circuit, which includes an A / D converter 16, a timing generation circuit 18, an image processing circuit 20,
Image display memory 24, D / A converter 26, memory 30,
The compression / decompression circuit 32 is controlled.

The data of the A / D converter 16 is transmitted through the image processing circuit 20 and the memory control circuit 22 or the data of the A / D converter 16 is transmitted directly through the memory control circuit 22 to the image display memory 24 or the memory. 30 is written.

Reference numeral 24 denotes an image display memory; 26, a D / A converter; and 28, an image display unit composed of a TFT LCD or the like. The display image data written in the image display memory 24 is a D / A converter 26. Is displayed by the image display unit 28 via the. The analog image output from the D / A converter 26 can be externally output via the connectors 114 and 120 and can be displayed on an external monitor 122 such as a CRT.

If image data captured by the image display unit 28 is sequentially displayed, an electronic finder function can be realized.

The image display unit 28 can arbitrarily turn on / off the display according to an instruction from the system control circuit 50. When the display is turned off, the power consumption of the image processing apparatus 100 is greatly reduced. Can be reduced.

Reference numeral 30 denotes a memory for storing photographed still images and moving images, which has a sufficient storage capacity for storing a predetermined number of still images and moving images for a predetermined time.

Accordingly, even in the case of continuous shooting or panoramic shooting in which a plurality of still images are continuously shot, it is possible to write a large amount of images to the memory 30 at high speed.

The memory 30 is provided with a system control circuit 50.
Can also be used as a work area.

32 is an adaptive discrete cosine transform (ADCT)
A compression / decompression circuit for compressing / decompressing image data by, for example, reading an image stored in the memory 30 and performing compression or decompression processing, and storing the processed data in the memory 3
Write to 0.

Exposure control means 40 controls the shutter 12 having an aperture function, and also has a flash dimming function in cooperation with the flash 48.

Reference numeral 42 denotes a distance measurement control unit that controls focusing of the photographing lens 10, 44 denotes a zoom control unit that controls zooming of the photographing lens 10, and 46 denotes a barrier control unit that controls the operation of the protection unit 102 which is a barrier. .

Reference numeral 48 denotes a flash, which also has a function of projecting AF auxiliary light and a function of controlling flash light.

The exposure control means 40 and the distance measurement control means 42
The system control circuit 50 controls the exposure control means 40 and the distance measurement control means 42 on the basis of the calculation result obtained by calculating the captured image data by the image processing circuit 20.

Reference numeral 50 denotes a system control circuit for controlling the entire image processing apparatus 100, and reference numeral 52 denotes a memory for storing constants, variables, programs, and the like for operation of the system control circuit 50, as shown in FIGS. Procedures are also stored.

Reference numeral 54 denotes a display unit such as a liquid crystal display device or a speaker which displays an operating state or a message using characters, images, sounds, or the like in accordance with the execution of the program by the system control circuit 50. A single or a plurality of units are installed at easily visible positions near the 100 operation units, and are configured by a combination of, for example, LCDs, LEDs, sound generating elements, and the like.

The display unit 54 has a part of its functions installed in the optical viewfinder 104.

Of the display contents of the display unit 54, those displayed on the LCD or the like include a single shot / continuous shooting display, a self-timer display, a compression ratio display, a recording pixel number display, a recording number display, and a remaining number of recordable images. Display, shutter speed display, aperture value display, exposure compensation display, flash display, red-eye reduction display, macro shooting display, buzzer setting display,
There are a remaining battery level display for a clock, a remaining battery level display, an error display, an information display using a plurality of digits, a detachable state display of the recording media 200 and 210, a communication I / F operation display, a date / time display, and the like.

Of the display contents of the display section 54, those displayed in the optical viewfinder 104 include a focus display, a camera shake warning display, a flash charge display, a shutter speed display, an aperture value display, an exposure correction display, and the like. There is.

Reference numeral 56 denotes an electrically erasable / recordable nonvolatile memory, for example, an EEPROM or the like.

60, 62, 64, 66, 68 and 70
Is an operation means for inputting various operation instructions of the system control circuit 50, and is constituted by one or a combination of a switch, a dial, a touch panel, pointing by gaze detection, a voice recognition device, and the like.

Here, these operation means will be specifically described.

Reference numeral 60 denotes a mode dial switch, which is a power-off mode, an automatic shooting mode, a shooting mode, a panoramic shooting mode, and a playback mode for switching between single-screen playback, multi-screen playback / erase mode, and PC connection mode. Can be set.

Reference numeral 62 denotes a shutter switch SW1, which is turned on during the operation of a shutter button (not shown),
(Auto focus) processing, AE (auto exposure) processing, A
It instructs to start operations such as WB (auto white balance) processing and EF (flash pre-emission) processing.

Reference numeral 64 denotes a shutter switch SW2, which is turned on when the operation of a shutter button (not shown) is completed, and transfers a signal read from the image sensor 12 to the memory 30 via the A / D converter 16 and the memory control circuit 22. Exposure processing for writing, development processing using arithmetic operations in the image processing circuit 20 and the memory control circuit 22, reading image data from the memory 30, performing compression in the compression / decompression circuit 32, and writing the image data in the recording medium 200 or 210 It instructs to start the operation of a series of processing called recording processing.

Reference numeral 66 denotes an image display ON / OFF switch.
ON / OFF of the image display unit 28 can be set.

With this function, the optical finder 104
By cutting off the current supply to the image display unit composed of a TFT LCD or the like when photographing is performed using, power can be saved.

Reference numeral 68 denotes a quick review ON / OFF switch for setting a quick review function for automatically reproducing image data immediately after photographing. In this embodiment, a function for setting the quick review function when the image display unit 28 is turned off is provided.

Reference numeral 70 denotes an operation unit comprising various buttons, a touch panel, etc., a menu button, a set button, a macro button, a multi-screen playback page break button, a flash setting button, a single-shot / continuous-shot / self-timer switching button,
Menu move + (plus) button, menu move-(minus) button, playback image move + (plus) button, playback image-(minus) button, shooting image quality selection button, exposure compensation button, date / interval setting button, etc. .

Reference numeral 80 denotes a power supply control means, which includes a battery detection circuit,
The DC-DC converter includes a DC converter, a switch circuit for switching a block to be energized, and the like. The DC-DC converter detects whether or not a battery is installed, the type of the battery, and the remaining battery level. The DC converter is controlled to supply a required voltage to each unit including the recording medium for a required period.

Reference numeral 82 denotes a connector, 84 denotes a connector, and 86 denotes a power supply means including a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, a NiMH battery, or a Li battery, and an AC adapter.

Reference numerals 90 and 94 denote an interface with a recording medium such as a memory card or a hard disk, reference numerals 92 and 96 denote connectors for connecting to a recording medium such as a memory card or a hard disk, and reference numeral 98 denotes a recording medium 200 or 210 on the connector 92 and / or 96. Is a recording medium attachment / detachment detection unit for detecting whether or not the recording medium is attached.

In this embodiment, the description has been made assuming that there are two interfaces and a connector for attaching a recording medium. Of course, the interface and the connector for attaching the recording medium may have a single or plural number of systems. In addition, a configuration may be adopted in which interfaces and connectors of different standards are provided in combination.

As the interface and the connector,
It may be configured using a card conforming to a standard such as a PCMCIA card or a CF (compact flash) card.

Further, the interfaces 90 and 94 and the connectors 92 and 96 are connected to a PCMCIA card or CF.
(Compact flash) When using a card conforming to the standard such as a card, a LAN card, a modem card, a USB card, an IEEE1394 card, a P128
By connecting various communication cards such as a 4-card, a SCSI card, a communication card such as a PHS, and the like, image data and management information attached to the image data are transferred to and from other peripheral devices such as a computer and a printer. I can do it.

Reference numeral 102 denotes a lens 1 of the image processing apparatus 100.
This is a protection unit that is a barrier that covers the imaging unit including “0” to prevent the imaging unit from being stained or damaged.

Reference numeral 104 denotes an optical finder, which enables photographing using only the optical finder without using the electronic finder function of the image display unit 28. In the optical viewfinder 104, some functions of the display unit 54, for example, a focus display, a camera shake warning display, a flash charge display, a shutter speed display, an aperture value display, an exposure correction display, and the like are provided.

Reference numeral 110 denotes communication means, such as RS232C or US
It has various communication functions such as B, IEEE1394, P1284, SCSI, modem, LAN, wireless communication, and the like.

Reference numeral 112 denotes a connector for connecting the image processing apparatus 100 to another device by the communication means 110 or an antenna in the case of wireless communication.

Reference numeral 200 denotes a recording medium such as a memory card or a hard disk.

The recording medium 200 includes a recording unit 202 composed of a semiconductor memory, a magnetic disk, or the like, and the image processing apparatus 1.
The image processing apparatus 100 includes an interface 204 for connecting to the image processing apparatus 100 and a connector 206 for connecting to the image processing apparatus 100.

Reference numeral 210 denotes a recording medium such as a memory card or a hard disk.

The recording medium 210 includes a recording section 212 composed of a semiconductor memory, a magnetic disk, or the like, and the image processing apparatus 1.
The image processing apparatus 100 includes an interface 214 for connecting to the image processing apparatus 100 and a connector 216 for connecting to the image processing apparatus 100.

(Appearance of Image Processing Apparatus) FIG. 2 is a plan view of an electronic camera to which the image processing apparatus is applied, and FIG. 3 is a rear view of the electronic camera. 1 that are the same as those in FIG. 1 indicate the same components. 116 is a shutter button, 114
Indicates a connector.

(Directory Structure of Data Recorded on Recording Medium) FIG. 4 shows an example of a directory structure of data recorded on the recording medium.

CTG _ **** indicates a directory indicating an image data file, MISC indicates a directory indicating a file for a slide show, and AUT _ ****.
*. JPG is a compressed image data file based on JPEG (International Standard), THM _ ****. JPG indicates a thumbnail image data file, and AUT _ ****. CR
W indicates a CCDRAW (indicating that data from the image pickup device was recorded as it is (uncompressed)) data files. AUT _ ****. *** and THM _ **
**. JPG is a pair. In other words, a normal image (AUT _ ****. ***) and a thumbnail image (THM _ ***. JPG) are recorded on the recording medium with the same four-digit number for each single image pickup, and It is provided at the time of screen reproduction, multi-screen reproduction, slide show reproduction processing and the like.

Also, MARK _ **. MRK is a sub-directory indicating each slide show, and data under the MRK is stored for the image data file selected for each slide show.

In this embodiment, the thumbnail image data file has a data structure that can be deleted independently of the compressed image data file.

(Image Display Data Table) FIG. 5 shows a single-screen reproduction or a multi-screen reproduction in which a recording medium having at least a part of the structure shown in FIG. Memory 3
It is an image display data table created on 0 or 52.

That is, the recording medium 200 or 210 on which image data or the like is recorded is set in the image processing apparatus 100, and the mode dial switch 60 is set to single-screen reproduction or multi-screen reproduction. The memory 30 storing the data extracted from the recording medium 200 or 210 or the recording medium is searched, and each data file name is stored in ascending order of the four-digit number as shown in FIG. The left column stores data files for normal images, and the right column stores data files for thumbnail images.

As a result of this search, the normal image (AUT _ **)
**. ***) only, and there is a case where there is no corresponding thumbnail image file. The arrows shown in FIG. 5 indicate the screen display order when the playback screen is moved (when the playback image movement + (plus) button on the operation unit 70 is pressed). That is, the images are displayed on the screen in order from the last image taken. The reverse is true when the playback image move- (minus) button on the operation unit 70 is pressed.

(JPEG Format) FIG. 6 shows a part of the JPEG format constituting each image data file.

SOI indicates the head marker of the image,
[Table etc.] is a part inserted as needed, and includes DHT, DQT, DAC, DRI, COM, APP
And so on.

EOI indicates the end marker of the image,
OF indicates the head marker of the frame.

(Example of Playback Screen) At the time of single playback processing,
One image data selected by operating the playback image move button of the operation unit 70 (latest at the time of activation) (as shown in FIG. 5, in the case of data represented by AUT _ ****. JPG, Data, the corresponding thumbnail image data in the case of data represented by AUT _ ****. CRW,
That is, THM _ ****. JPG) is taken out of the recording medium or the memory 30 and decompressed by the compression / decompression circuit 32, and then displayed on the entire screen of the image display unit. Note that when the image size is not the size of the image captured by the user, a margin (black) may be provided around the image without displaying the full screen. An example of a thumbnail screen display is as shown in FIG.

At the time of multi-playback processing, thumbnail image data (see FIG. 5) corresponding to nine pieces of normal image data is taken out from the recording medium or the memory 30 and the compression / decompression circuit 32
To display a 3 × 3 grid as shown in FIG. The arrangement of the taken out images and the way of shifting each image by pressing the reproduction image moving button on the operation unit 70 are arbitrary.

As described in (Reproduction Process) (Image Display Data Table), the mode dial switch 60
At the time of the reproduction processing started by setting the single-screen reproduction or the multi-screen reproduction, first, an image display data table as shown in FIG. 5 is created. At the time of the single-screen reproduction, the reproduction image moving button of the operation unit 70 is operated. One image data (the file in the left column of FIG. 5) selected (latest at startup) is taken out from the recording medium or the memory, and
Is performed. Further, at the time of multi-screen reproduction, nine image data (the file in the left column of FIG. 5) selected by operating the reproduction image movement button of the operation unit 70 (from the latest one at the time of activation) are read from the recording medium or the memory. The data is taken out and the processing shown in FIG. 9 is performed on each data. The display in the processing of FIG. 9 and FIG. 10 to be described later means display on the image display unit 28.

As shown in FIG. 9, first, in step (hereinafter, S) 1, the extracted data is converted into a data compressed JP
It is determined whether the data is EG image data (AUT _ ****. JPG) or other data. If the data is JPEG image data, the process proceeds to S2 to perform a display process described in detail in FIG. If it is determined in step S1 that the data is not JPEG image data (for example, AUT _ ****. CRW), the process advances to step S3 to determine whether there is thumbnail image data corresponding to the extracted data (for example, as shown in FIG. 5). Judge.
If there is corresponding thumbnail image data in S3,
Proceeding to S2, display processing detailed in FIG. 10 is performed. S3
If there is no corresponding thumbnail image data, S4
To display that there is no thumbnail image (for single playback, for example, CCDRAW data (AUT_ *
***. In the case of CRW), if there is no corresponding thumbnail image data, the thumbnail image data is displayed as shown in FIG. At the time of multi-playback, the central icon 17a in FIG.
Only the corresponding part of the multi-playback screen (see FIG. 7) is displayed. ).

Next, the display processing shown in FIG. 10 will be described.

First, in step S5, the file is searched from the beginning, and it is determined whether or not the leading marker is SOI. SOI
Otherwise, the data has been destroyed,
In S12, as shown in FIG. 11, the character "Corrupted Data!" Indicating that the data has been destroyed, the predetermined icon 11a, and the file name (A in FIG. 11).
UT_0001. JPG). In S5, if the head of the file is the SOI, the process proceeds to S6, where it is determined whether the next marker (for example, at the position of [table or the like] shown in FIG. 6) has been detected. If the next marker cannot be detected, it means that the data has been destroyed, so the process proceeds to S12 and the display of FIG. 11 is performed.

When the next marker is detected in S6,
Proceeding to S7, it is determined whether the detected marker is a marker corresponding to a file that can be supported by the image processing apparatus. Information on the markers used in the supportable files is stored in the memory 52 or the like in advance. If it is not a marker used for a file that can be supported, even if it is a JPEG file (even if the data is not destroyed), it cannot be reproduced, that is, there is no compatibility. for
"mat" data is displayed as shown in FIG. 12 together with the predetermined icon 12a and the file name.
If the marker is used for a file that can be supported, the process proceeds to S8, where it is determined whether the detected marker is SOF0. If the detected marker is not SOF0, the process returns to S6 to detect the next marker. Repeat the operation. The English code definition of marker code SOF0 is Baseline DC
T, whose contents are the basic scheme (baseline) DCT
This is an encoded frame.

If the detected marker is SOF0 in S8, the process proceeds to S9.

In S9, it is determined whether or not the file is a reproducible frame. For example, in this image processing apparatus,
If the three conditions of (1) data length below the frame header (byte unit), (2) precision per pixel (number of bits), and (3) color component specification satisfy the predetermined conditions, reproduction is performed. It is determined that the frame is a possible frame. If it is determined that the frame is not a reproducible frame, S1
Proceeding to 3, the display of FIG. 12 is performed.

If it is determined in step S9 that the frame can be reproduced, the flow advances to step S10 to determine whether the image file has a size that can be reproduced by the image reproducing apparatus. In the present image reproducing apparatus, if (1) the number of lines of an image and (2) the number of pixels per line satisfy predetermined conditions, it is determined that the image can be reproduced. If it is determined that the size is not reproducible, that is, for example, if it is determined that the size is larger than the size, the process proceeds to S14, and the fact is determined as “Image too large!” Data together with the predetermined icon 13a and the file name. It is displayed as shown in FIG. If it is determined that the size is a reproducible size, the process proceeds to S11, where decompression / display processing is performed. That is, the image of the file is decompressed by the compression / decompression circuit 32 and then displayed on the image display unit 28 (for the display mode (single reproduction or multi-reproduction), see the description of (Example of Reproduction Screen)). . At this time, if an error occurs for any reason, depending on the cause of the error (detection result)
The display processing of FIGS. 11 to 13 is performed. This error is detected by, for example, the processor in the compression / decompression circuit 32 or the system control circuit 50. Examples of the error include a case where the amount of image data written in the header is different from the actual image data, and a case where an error occurs when reading the file.

FIGS. 11 to 13 show display screens at the time of single reproduction, and display screens at the time of multi reproduction (see FIG. 7) show only corresponding icons in FIGS. Is displayed (not shown).

In the case of CCDRAW data, that is, in the case of proceeding from S3 to S2 in FIG. 9, the same processing as described above is performed, but the display corresponding to FIGS.
As shown in FIG. The display screen at the time of the multi-playback (see FIG. 7) includes the icons 11a and 1 shown in FIGS.
Only 2a is displayed.

Further, in the above description, in S8, only the JPEG image file when the detected marker is SOF0 is processed as a reproducible file, but this is an example, and the reproducible file format is free. Can be set to In addition to changing the processing program in the compression / decompression circuit 32 as well as one type of file format, a JPEG image file having another marker can be processed as a reproducible file in addition to SOF0. You can also do.
The same applies to image files in other compression formats.

The above description can be similarly applied to other compressed image files, for example, image files called GIF, TIFF, and Flashpix.

(Other Embodiments of the Present Invention) Another object of the present invention is to supply a storage medium storing a program code of a software program for realizing the functions of the above-described embodiments to a system or an apparatus, and It is needless to say that the present invention is also achieved when a computer (or CPU or MPU) of the system or the apparatus reads out and executes the program code stored in the storage medium.

In this case, the program code itself read from the storage medium implements the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD
R, a magnetic tape, a nonvolatile memory card, a ROM, and the like can be used. When the computer executes the readout program code, not only the functions of the above-described embodiments are realized, but also the OS running on the computer based on the instruction of the program code.
It goes without saying that S (Operating System) or the like may perform some or all of the actual processing, and the processing may realize the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, based on the instruction of the program code, It goes without saying that the CPU included in the function expansion board or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

The present invention is not limited to the above-described embodiment, and it goes without saying that those skilled in the art have various modifications.

[0118]

As described above, according to the present invention,
Even if an image processing apparatus attempts to set a recording medium on which image data is recorded in a file format (format) and size that cannot be reproduced and try to reproduce it, it is possible to easily understand the reason why the reproduction is not possible and to respond appropriately. be able to.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of an embodiment of the present invention.

FIG. 2 is a plan view of the electronic camera according to the embodiment.

FIG. 3 is a rear view of the electronic camera.

FIG. 4 is a diagram showing an example of a directory structure of image files and the like on a recording medium.

FIG. 5 is a diagram showing a data table for image display.

FIG. 6 is a diagram showing a part of a JPEG format.

FIG. 7 is a diagram showing an example of a multi-play screen.

FIG. 8 is a diagram showing an example of a display screen of CCDRAW data.

FIG. 9 is a flowchart illustrating an example of an operation according to the exemplary embodiment.

FIG. 10 is another flowchart.

FIG. 11 is a diagram illustrating an example of a display image indicating data destruction in normal compressed image data.

FIG. 12 is a diagram illustrating an example of a display image indicating that there is no compatibility in normal compressed image data.

FIG. 13 is a diagram illustrating an example of a display image indicating a size exceeding the size in normal compressed image data.

FIG. 14 is a diagram illustrating an example of a display image indicating data destruction in CCDRAW image data.

FIG. 15 is a diagram illustrating an example of a display image indicating that there is no compatibility in CCDRAW image data.

FIG. 16 is a diagram illustrating an example of a display image indicating a size exceeding the size in CCDRAW image data.

FIG. 17 is a diagram illustrating an example of a display image indicating that there is no thumbnail image in CCDRAW image data.

[Explanation of symbols]

 Reference Signs List 10 photographing lens 12 shutter 14 image sensor 16 A / D converter 18 timing generation circuit 20 image processing circuit 22 memory control circuit 24 image display memory 26 D / A converter 28 image display unit 30 memory 32 image compression / decompression circuit 40 exposure Control means 42 Distance control means 44 Zoom control means 46 Barrier control means 48 Flash 50 System control circuit 52 Memory 54 Display unit 56 Non-volatile memory 60 Mode dial switch 62 Shutter switch SW1 64 Shutter switch SW2 66 Image display ON / OFF switch 68 Quick review ON / OFF switch 70 Operation unit 80 Power supply control unit 82 Connector 84 Connector 86 Power supply unit 90 Interface 92 Connector 94 Interface 96 Connector 98 Recording medium Detachment detection means 100 image processing apparatus 102 protection means 104 optical finder 110 Communication unit 112 connector (or antenna) 200 recording medium 202 recording unit 204 interface 206 Connector 210 recording medium 212 recording unit 214 Interface 216 Connector

Claims (29)

[Claims] 1. An image processing apparatus having an output unit for outputting an image recorded on a recording medium to an image display unit, wherein the retrieval unit retrieves predetermined information in an image data file recorded on the recording medium. Determining means for determining whether or not the image data file is capable of displaying an image based on a search result of the searching means; and controlling means for displaying information corresponding to the determination result of the determining means on the image display means. An image processing apparatus comprising: 2. The image processing apparatus according to claim 1, wherein the image data is compressed image data. 3. The image processing apparatus according to claim 2, wherein the compressed image data is compressed according to a JPEG format. 4. The image processing apparatus according to claim 3, wherein the predetermined information in the image data file is at least one of a marker alone and a header attached to the marker. 5. The information according to claim 1, wherein the information according to the determination result includes data destruction, incompatibility,
An image processing apparatus characterized in that the information is information indicating at least one of a size exceeding a size and a thumbnail image being absent. 6. The image processing apparatus according to claim 1, wherein the recording medium is detachable from the image processing apparatus. 7. The image processing apparatus according to claim 1, wherein the image data file has a hierarchical data structure, and is stored in the recording medium so as to be erasable for each layer. 8. The image processing apparatus according to claim 7, wherein the hierarchical data includes a thumbnail image. 9. The image processing apparatus according to claim 1, further comprising an imaging unit. 10. The image processing apparatus according to claim 1, further comprising an image display unit. 11. The image processing apparatus according to claim 1, wherein the control unit displays information corresponding to the determination result as an icon. 12. Searching for predetermined information in an image data file recorded on a recording medium, determining whether the image data file can display an image based on the search result, and responding to the determination result. An image processing method characterized by displaying the information. 13. The image processing method according to claim 12, wherein the image data is compressed image data. 14. The image processing method according to claim 13, wherein the compressed image data is compressed according to a JPEG format. 15. The image processing method according to claim 14, wherein the predetermined information in the image data file is at least one of a marker alone and a header attached to the marker. 16. The information according to claim 12, wherein the information according to the determination result includes data destruction, incompatibility,
An image processing method characterized in that the information is information indicating at least one of a size exceeding the size and no thumbnail image. 17. The image processing method according to claim 12, wherein the recording medium is detachable from the image processing apparatus. 18. The image processing method according to claim 12, wherein the image data file has a hierarchical data structure, and is stored in the recording medium in a erasable manner for each hierarchy. 19. The image processing method according to claim 18, wherein the hierarchical data includes a thumbnail image. 20. The image processing method according to claim 12, wherein information according to the determination result is displayed as an icon. 21. A recording medium on which a control program for displaying information related to an image recorded on a recording medium on an image display means is recorded, wherein the control program causes a computer to execute image data recorded on the recording medium. Searching for predetermined information in the file; determining whether or not the image data file is capable of displaying an image based on the search result; and displaying information corresponding to the determination result on the image display means. Recording medium. 22. A recording medium according to claim 21, wherein said image data is compressed image data. 23. The recording medium according to claim 22, wherein the compressed image data is compressed according to a JPEG format. 24. The recording medium according to claim 23, wherein the predetermined information in the image data file is at least one of a marker alone and a header attached to the marker. 25. The information according to claim 21, wherein the information according to the determination result includes data destruction, incompatibility,
A recording medium, which is information indicating at least one of a size exceeding the size and no thumbnail image. 26. A recording medium according to claim 21, wherein the recording medium is detachable from an image processing apparatus. 27. The recording medium according to claim 21, wherein the image data file has a hierarchical data structure, and is stored in the recording medium so as to be erasable for each layer. 28. The recording medium according to claim 27, wherein the hierarchical data includes a thumbnail image. 29. The recording medium according to claim 21, wherein information according to the determination result is displayed as an icon.