JP2004297657A - Image processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily display an image of a portion that does not appear in a sub image. <P>SOLUTION: When a desired partial image is designated from a main image reproduced from a desired main image file in a reproducing mode, a sub image file that stores image data corresponding to the partial image, is recorded on a recording medium 34. In the sub image file, a file number of the main image file is embedded as a link file number. When a specific operation is performed while indicating a sub image reproduced from such a sub image file on an LCD 28, the main image file is specified on the basis of the link file number, and a part of the main image reproduced from the main image file is displayed while being magnified on the LCD 28. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image processing apparatus, and more particularly to an image processing apparatus that is applied to, for example, a digital camera and records, as a second image signal, a partial image signal belonging to a specified partial area among recorded first image signals.
[0002]
[Prior art]
An example of a conventional image processing apparatus of this type is disclosed in Japanese Patent Application Laid-Open No. H11-163,837. According to this conventional technique, when the set button is operated while the image reproduced from the recording medium is displayed on the LCD, the partial image at the center of the screen is enlarged and displayed. When the direction instruction button is operated while the enlarged image is displayed, the display area moves. When the shutter button is operated when an enlarged image of a desired portion is displayed, the enlarged image is displayed. It is recorded on a recording medium as a separate file.
[0003]
Therefore, when the enlarged image recorded as a separate file is reproduced and the set button is operated, a re-enlarged image in which the central portion of the enlarged image is further enlarged is displayed. Also, when the direction instruction button is operated in this state, the display area moves.
[0004]
Since the range in which the display area can move is limited, when the edge of the display area reaches the edge of the reproduced image, the operation of the direction instruction button becomes invalid.
[0005]
[Patent Document 1]
JP-A-11-275426
[0006]
[Problems to be solved by the invention]
However, when the original image of the enlarged image exists on the recording medium, a re-enlarged image of a portion that does not appear in the enlarged image can be displayed by using the original image. However, this requires cumbersome operations such as searching for the original image.
[0007]
Therefore, a main object of the present invention is to provide an image processing apparatus capable of easily reproducing an image of a portion not appearing in a reproduced image.
[0008]
[Means for Solving the Problems]
An image processing apparatus according to the present invention includes a recording unit that records, as a second image signal, a partial image signal belonging to a specified partial area in a recorded first image signal, and stores link information between the first image signal and the second image signal. Creating means for creating, second image display means for displaying a second image of a specified size having a specified zoom magnification based on the second image signal, and link information when a specific operation directed to the second image signal is performed Detecting means for detecting a first image signal based on the first image signal; and first image display means for displaying a first image of a specified size having a specified zoom magnification based on the first image signal detected by the detecting means.
[0009]
[Action]
When a partial area is designated from among the recorded first image signals, the recording unit records the partial image signal belonging to the designated partial area. The recorded partial image signal becomes the second image signal. The creating means creates link information between the first image signal and the second image signal. The second image of the designated size having the designated zoom magnification is displayed by the second image display means based on the second image signal. When a specific operation directed to the second image signal is performed, the detecting unit detects the first image signal based on the link information. The first image display means displays a first image of a designated size having a designated zoom magnification based on the detected first image signal.
[0010]
Thus, when the specific operation is performed, the first image signal is detected based on the link information, and the first image having the same zoom magnification and size as the second image is displayed. This makes it possible to display an image that does not appear in the second image.
[0011]
Preferably, the recording means assigns area information on the designated partial area to the second image signal. The second image display means writes the second image signal into a memory area defined by the reference address and the area information. On the other hand, the first image display means writes the first image signal into a memory area starting from the reference address. Thereby, the first image signal is written into the memory such that portions common to the second image signal overlap each other, and the management of the address when displaying the first image is facilitated.
[0012]
The area information preferably includes size information indicating the size of the designated partial area, and offset information indicating the offset between the reference position of the first image signal and the reference position of the designated partial area.
[0013]
Preferably, the creating unit assigns the link information to the second image signal. This facilitates handling of link information.
[0014]
Preferably, the second image corresponds to a part of the image signal forming the second image signal, and the specific operation is a scroll operation of the second image. In this case, the second image is updated to the first image in response to the scroll operation. More preferably, the scroll operation is a scroll operation outside the range of the second image signal.
[0015]
Preferably, the specified zoom magnification is a zoom magnification larger than “1.0”, and the specific operation is a display operation of the second image having the zoom magnification.
[0016]
【The invention's effect】
According to the present invention, when the specific operation is performed, the first image signal is detected based on the link information, and the first image having the same zoom magnification and size as the second image is displayed. This makes it possible to display an image that does not appear in the second image.
[0017]
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.
[0018]
【Example】
Referring to FIG. 1, a digital camera 10 of this embodiment includes an optical lens 12. The optical image of the subject is irradiated on the light receiving surface of the image sensor 14 through the optical lens 12. The image sensor 14 performs photoelectric conversion, and thereby generates a charge corresponding to an optical image, that is, a raw image signal. The number of effective pixels of the image sensor 14 is 640 horizontal pixels × 480 vertical pixels, and the generated raw image signal also has a size of 640 horizontal pixels × 480 vertical pixels.
[0019]
When the camera mode is selected by the mode changeover switch 38e of the operation panel 38 and the shutter button 38a is operated, the CPU 36 executes a photographing process. First, a pixel read command is provided from the CPU 36 to the TG 18, a signal processing command is provided from the CPU 36 to the signal processing circuit 20, and a compression command is provided from the CPU 36 to the JPEG codec 30.
[0020]
The TG 18 exposes the image sensor 14 in response to the given command, and reads out a charge generated by the exposure, that is, a raw image signal. The raw image signal is output from the image sensor 14 by a raster scanner method. The output raw image signal is subjected to noise removal, gain adjustment, and A / D conversion in the CDS / AGC / AD circuit 16. The CDS / AGC / AD circuit 16 executes these processes in synchronization with the timing signal output from the TG 18, similarly to the image sensor 14.
[0021]
One frame of raw image data output from the CDS / AGC / AD circuit 16 is subjected to signal processing such as white balance adjustment, color separation, and YUV conversion by the signal processing circuit 20. The signal processing circuit 20 outputs YUV format image data having a resolution of 640 horizontal pixels × 480 vertical pixels. The output image data is written to the SDRAM 24 by the memory controller 22.
[0022]
The JPEG codec 30 reads the image data stored in the SDRAM 24 through the memory controller 22, and compresses the read image data according to the JPEG method. The compressed image data obtained by the JPEG compression is written to the SDRAM 24 through the memory controller 22.
[0023]
The CPU 36 reads the compressed image data stored in the SDRAM 24 through the memory controller 22, and records the read compressed image data in a file format on the recording medium 34. On the recording medium 34, an image file storing compressed image data is created. The recording medium 34 is a detachable memory card, and can be accessed by the CPU 36 when connected to the I / F 32.
[0024]
In the following description, the image file created in response to the operation of the shutter button 38a in the camera mode is defined as “main image file”, and the compressed image data stored in the main image file is referred to as “compressed main image data”. And decompressed image data based on the compressed main image data is defined as “decompressed main image data”.
[0025]
Referring to FIG. 4A, the main image file includes header data and compressed main image data. The file number, identifier, zoom magnification information, size information, and address information are embedded in the header data. Among them, for the main image file, “Prm” is described as an identifier, “1.0” is described as zoom magnification information, “640 horizontal × 480 vertical pixels” is described as size information, and address information is described. Is described as (0,0).
[0026]
When the reproduction mode is selected by the mode changeover switch 38e and the desired main image file is selected by the update button 38c, the CPU 36 reproduces the main image file. First, the CPU 36 detects zoom magnification information, size information, and address information from the selected main image file, and sets the detected information in the video encoder 26 as the zoom magnification, readout size, and readout start address of the reproduced image.
[0027]
Subsequently, the CPU 36 accesses the recording medium 34 through the I / F 32 and reads out compressed main image data of 640 horizontal pixels × 480 vertical pixels from a desired main image file. The read compressed main image data is written to the SDRAM 24 through the memory controller 22. When the reproduction mode is selected, an expanded image area 24a and a compressed image area 24b are formed in the SDRAM 24 as shown in FIG. The compressed main image data is written into the compressed image area 24b by the memory controller 22. The CPU 36 gives a decompression command to the JPEG codec 30 in parallel with the reading of the compressed main image data. This decompression instruction includes size information (= 640 horizontal pixels × 480 vertical pixels) detected from the main image file and address information (= (0, 0)).
[0028]
The JPEG codec 30 reads the compressed main image data stored in the compressed image area 24b through the memory controller 22, and decompresses the read compressed main image data according to the JPEG method. The JPEG codec 30 also accesses the SDRAM 24 through the memory controller 22, and writes decompressed main image data to the decompressed image area 24a according to the size information and address information included in the decompression command.
[0029]
The expanded image area 24a has a capacity capable of storing image data having a pixel number exceeding 640 pixels in the horizontal direction and storing image data having a pixel number exceeding 480 pixels in the vertical direction. The decompressed main image data is written in the decompressed image area 24a in a bitmap manner based on the address (0, 0). That is, the decompressed main image data is stored in the frame FL0 shown in FIG.
[0030]
The video encoder 26 accesses the SDRAM 24 through the memory controller 22 and reads out decompressed main image data corresponding to a set size (= horizontal 640 pixels × vertical 480 pixels) based on the set address (= (0,0)). Further, the read expanded main image data is subjected to a zoom process according to the set zoom magnification (= 1.0) and an encoding process according to the NTSC format to the read expanded main image data, and is read from the frame FL0 shown in FIG. The video encoder 26 outputs a composite video signal of 1 × zoom in accordance with the NTSC format, and as a result, reproduces at a normal magnification (= 1.0 ×). The image is displayed on the entire screen of the LCD 28.
[0031]
For example, when the decompressed main image data shown in FIG. 5 is stored in the decompressed image area 24a, the same main image shown in FIG.
[0032]
When the enlargement button 38b is operated once in a state where the playback image of the normal magnification is displayed, the CPU 36 updates the zoom magnification, the read size, and the read start address set in the video encoder 26. Specifically, the zoom magnification is updated to “2.0”, the read size is updated to 320 horizontal × 240 vertical, and the read start address is updated to (160, 120). As a result, the partial image data belonging to the frame FL1 shown in FIG. 3 in the expanded image area 24a is read, and the read partial image data is subjected to double magnification zoom. The LCD 28 outputs a double enlarged image.
[0033]
Therefore, if the enlargement button 38b is operated while the main image shown in FIG. 5 is displayed, this main image is updated to the enlarged image shown in FIG.
[0034]
In this embodiment, every time the enlargement button 38b is pressed, the zoom magnification is updated in the order of “1.0” → “2.0” → “4.0” → “8.0”, and the read size is changed. Are updated in the order of “640 horizontal pixels × 480 horizontal pixels” → “320 horizontal pixels × 240 vertical pixels” → “160 horizontal pixels × 120 vertical pixels” → “80 horizontal pixels × 60 vertical pixels”, and the read start address Are updated in the order of (0,0) → (160,120) → (240,180) → (280,210). Therefore, the frame defining the image data read area is updated in the order of “FL0” → “FL1” → “FL2” → “FL3” each time the enlargement button 38b is operated.
[0035]
When the scroll button 38d is operated in a state where the enlarged image is displayed, the CPU 36 updates the vertical address value or the horizontal address value forming the read start address. Specifically, when the scroll button 38d is operated downward, "8" is added to the vertical address value, and when the scroll button 38d is operated upward, "8" is subtracted from the vertical address value. When the scroll button 38d is operated rightward, "8" is added to the horizontal address value, and when the scroll button 38d is operated leftward, "8" is subtracted from the horizontal address value. By updating the read start address, the frames FL1 to FL3 shown in FIG. 3 are scrolled in a desired direction. As a result, the enlarged image output from the LCD 28 is also scrolled in a desired direction.
[0036]
When the shutter button 38a is operated while an enlarged image is displayed, the CPU 30 gives a compression command to the JPEG codec. The compression instruction includes the read start address and the read size currently set in the video encoder 26 as address information and size information.
[0037]
The JPEG codec 30 specifies the current effective frame based on the address information and the size information included in the given compression instruction, reads out the partial image data in this effective frame through the memory controller 22, and reads the read out portion. JPEG compression is performed on the image data. The compressed image data generated by the JPEG compression is written into the compressed image area 24b of the SDRAM 24 by the memory controller 22.
[0038]
The CPU 36 reads the compressed image data stored in the compressed image area 24b through the memory controller 22, and records the read compressed image data in a file format on the recording medium 34. On the recording medium 34, an image file storing compressed image data is created.
[0039]
Therefore, when the shutter button 38a is operated while the enlarged image shown in FIG. 6 is displayed, the partial image data belonging to the frame FL1 shown in FIG. 5 is recorded on the recording medium 34 in a file format.
[0040]
In the following description, an image file created in response to the operation of the shutter button 38a in the playback mode is defined as a “sub-image file”, and the compressed image data stored in the sub-image file is defined as compressed sub-image data. The expanded image data based on the compressed sub-image data is defined as expanded sub-image data.
[0041]
The sub-image file has the structure shown in FIG. The sub-image file includes header data and compressed sub-image data, like the main image file. Also, the file number, identifier, zoom magnification information, size information, and address information are embedded in the header data. However, for the sub-image file, “Sub” is described as an identifier, and the zoom magnification, the read size, and the read start address set in the video encoder 26 when the shutter button 38a is operated are replaced with the zoom magnification information, the size information, and the address. Described as information. As for the sub-image file, the file number of the main image file that is the basis of the enlarged image reproduced when the shutter button 38a is operated is embedded in the header data as a link file number. The address information embedded in the header data indicates an offset between the reference address of the main image data and the reference address of the sub-image data.
[0042]
When a sub-image file is selected by the update button 38c, the CPU 36 detects zoom magnification information, size information and address information embedded in the header data of this sub-image file, and uses the detected information as a zoom magnification and a read start address. And the read size is set in the video encoder 26. When the setting is completed, the CPU 36 transfers the compressed sub-image data stored in the sub-image file to the compressed image area 24b of the SDRAM 24, and gives a decompression command to the JPEG codec 30. The decompression instruction includes size information and address information detected from the sub-image file.
[0043]
The JPEG codec 30 reads the compressed sub-image data from the compressed image area 24b through the memory controller 22, and decompresses the read compressed sub-image data by the JPEG method. After that, the JPEG codec 30 accesses the SDRAM 24 through the memory controller 22, and writes the expanded sub-image data into the expanded image area 24a according to the size information and the address information included in the expansion instruction. The expanded sub-image data is stored in the area that existed immediately before the recording process was performed. That is, when a sub-image file is created for the partial image data in the frame FL1 shown in FIG. 3, the expanded sub-image data read from this sub-image file and expanded is written in the same frame FL1.
[0044]
The video encoder 26 accesses the SDRAM 24 through the memory controller 22, reads out the expanded sub-image data corresponding to the set size from the set address, performs zoom processing on the read expanded sub-image data according to the set zoom magnification, and encodes according to the NTSC format. And processing. As a result, the sub-image is displayed on the entire screen of the LCD 28.
[0045]
For example, when the sub-image file storing the image data in the frame FL1 shown in FIG. 5 is selected, the expanded sub-image data shown in FIG. 7 is expanded in the expanded image area 24a. Then, the same sub-image is displayed on the entire screen of the LCD 28.
[0046]
When the enlargement button 38b is operated in a state where the sub-image is displayed, the zoom magnification, the read size, and the read start address set in the video encoder 26 are updated in the same manner as described above. As a result, the sub-image displayed on the LCD 28 is enlarged. For example, when the enlargement button 38b is operated while the sub-image shown in FIG. 7 is displayed on the entire screen of the LCD 28, the partial image data belonging to the frame FL2 shown in FIG. The LCD 28 displays an enlarged image shown in FIG.
[0047]
When the scroll button 38d is operated while the enlarged image is displayed, the read start address set in the video encoder 26 is updated in the same manner as described above. As a result, the enlarged image output from the LCD 28 is scrolled in a desired direction.
[0048]
However, the size of the sub image is smaller than the main image, and the scrollable range is also smaller than the main image. Therefore, in this embodiment, when scrolling outside the scrollable range is instructed, the related main image file is specified based on the link file information included in the sub-image file, and included in the specified main image file. The compressed main image data is expanded, and the expanded main image data is expanded in the expanded image area 24a. As a result, the scrollable range is enlarged, and an enlarged image of a portion not appearing in the sub-image can be displayed on the LCD 28.
[0049]
For example, while the expanded sub-image data shown in FIG. 7 is stored in the expanded image area 24a, if the scroll of the frame FL2 to the position shown in FIG. 9 is instructed, the related expanded main image data becomes the expanded image area. 24a. As a result, the enlarged image shown in FIG. 10, that is, the enlarged image of the portion not appearing in the sub-image is displayed on the LCD 28.
[0050]
When the reproduction mode is selected, the CPU 36 executes processing according to the flowcharts shown in FIGS. The control program corresponding to the flowchart is stored in the flash memory 40.
[0051]
Referring to FIG. 11, first, in step S1, the file number N of the image file to be reproduced is determined. In steps S3, S5, and S7, zoom magnification information, size information, and address information are detected from the image file specified by the file number N, and the numerical values indicated by the detected information are used as the video encoder as the zoom magnification, read size, and read start address. Set to 26.
[0052]
In step S9, an image output process is executed according to a subroutine shown in FIG. First, in step S51, the compressed image data included in the image file to be reproduced is transferred from the recording medium 34 to the compressed image area 24b of the SDRAM 24. In step S53, size information and address information are detected from the image file to be reproduced, and a decompression command including the detected information is given to the JPEG codec 30. As a result, the compressed image data stored in the compressed image area 24b is expanded by the JPEG codec 30, and the expanded image data is expanded in the expanded image area 24a of the SDRAM 24. The decompressed image data is read by the video encoder 26, and as a result, a reproduced image is displayed on the LCD 28. Upon completion of the process in the step S53, the process returns to a routine at a higher hierarchy.
[0053]
Returning to FIG. 11, in step S11, it is determined whether or not the update button 38c has been operated. If the determination is YES here, the file number N is updated in step S13, and then the processes in steps S3 to S9 are executed again. As a result, the reproduced image displayed on the LCD 28 is updated to another reproduced image.
[0054]
If NO is determined in the step S11, it is determined in a step S15 whether or not the shutter button 38a is operated. If “YES” here, the frame currently enabled is determined in a step S17. If the frame FL0 is a valid frame, a message to the effect that the button operation is invalidated is output in step S20, and the process returns to step S11. The button operation is invalidated in consideration of the fact that a main image file storing the same main image data already exists. On the other hand, if any one of the frames FL1 to FL3 is a valid frame, NO is determined in the step S17, and the sub-image recording process is executed in a step S19. This process follows a subroutine shown in FIG.
[0055]
Referring to FIG. 14, in step S61, the file number of the relevant main image file is detected. If the currently reproduced image file is a main image file, the file number of this main image file is detected. If the currently reproduced image file is a sub-image file, the file number written as link file information in this sub-image file is detected.
[0056]
When the file number is detected, header data is created in step S63. Various information shown in FIG. 4B is embedded in the header data. Among these, as the zoom magnification information, the size information, and the address information, the zoom magnification, the read size, and the read start address set in the video encoder 26 are described. The file number specified in step S61 is described as the link file number.
[0057]
In step S65, a compression instruction is issued to the JPEG codec 30. This compression instruction includes the read size and read start address set in the video encoder 26 as size information and address information. As a result, the partial image data corresponding to the enlarged image displayed on the LCD 28 is read from the expanded image area 24a and subjected to JPEG compression. The resulting compressed sub-image data is written to the compressed image area 24b.
[0058]
In step S67, the compressed sub-image data stored in the compressed image area 24b is read, and a sub-image file including the compressed sub-image data and the header data created in step S63 is recorded on the recording medium. When the recording is completed, the process returns to the routine in the upper hierarchy.
[0059]
Returning to FIG. 11, if NO is determined in the step S15 or S17, it is determined whether or not the scroll button 38d is operated in a step S21. If “YES” here, the frame currently enabled is determined in a step S23. If the frame FL0 is a valid frame, scrolling is considered impossible, and a message to that effect is output in step S35. When the output of the message is completed, the process returns to step S11.
[0060]
If any one of the frames FL1 to FL3 is a valid frame, NO is determined in the step S23, and it is determined in a step S25 whether scrolling of the valid frame is possible. If the operation of the scroll button 38d is for instructing movement within the range of the decompressed image data stored in the decompressed image area 24a, the process directly proceeds to step S33, and the read start address set in the video encoder 26 is updated. . As a result, the enlarged image displayed on the LCD 28 is scrolled in a desired direction. Upon completion of the process in the step S33, the process returns to the step S11.
[0061]
If the operation of the scroll button 38d is for instructing movement of the decompressed image data stored in the decompressed image area 24a to the outside of the range, the process proceeds to step S27, where the image file currently reproduced is the main image file and the sub image file. It is determined which of the image files. If it is determined that the file is the main image file, it is determined that further scrolling is impossible, a message is output in step S35, and the process returns to step S11.
[0062]
On the other hand, if it is determined in step S27 that the file is a sub-image file, a main image file related to this sub-image file is specified in step S29. This specification is performed based on the link file number written in the sub-image file. When the main image file is specified, the image output processing according to the subroutine shown in FIG. 13 is executed in step S31, and the read start address is updated in step S33. As a result, the enlarged image displayed on the LCD 28 is scrolled in a desired direction. Upon completion of the process in the step S33, the process returns to the step S11.
[0063]
In the step S37, it is determined whether or not the enlargement button 38b is operated. If “YES” here, the process proceeds to a step S39 to determine whether or not the display image cannot be enlarged. As described above, the zoom magnification can be selected only from “1.0”, “2.0”, “4.0”, and “8.0”. Therefore, in the step S39, it is determined whether or not the current zoom magnification is “8.0”. If the determination is YES here, the process directly returns to step S11. On the other hand, if NO is determined, the zoom magnification, readout size, and readout start address set in the video encoder 26 are updated in steps S41, S43, and S45, and thereafter, the process returns to step S11.
[0064]
In the digital camera 10 of another embodiment, when the enlarge button 38b or the scroll button 38d is operated while the sub-image is displayed, the related main image file is reproduced. For example, if the enlargement button 38b is operated while the sub-image shown in FIG. 7 is displayed on the entire screen of the LCD 28, the expanded sub-image data shown in FIG. 15 is expanded in the expanded image area 24a of the SDRAM 24, and the frame FL2 The image inside is enlarged and displayed on the LCD 28.
[0065]
In order to perform such an operation, the CPU 36 executes processing according to a flowchart shown in FIG. 16 instead of the flowchart shown in FIG. However, the flowchart shown in FIG. 16 is the same as the flowchart shown in FIG. 12 except that steps S71 to S75 are added between steps S39 and S41, and thus only steps S71 to S75 will be described. I do.
[0066]
If it is determined in step S39 that the enlargement process is possible, it is determined in step S71 whether the image file currently reproduced is the main image file or the sub image file. If it is determined that the file is the main image file, it is determined that further scrolling is impossible, and the process directly proceeds to step S41. On the other hand, if it is determined that the image file is a sub-image file, a main image file related to the sub-image file is specified in step S73. This specification is performed based on the link file number written in the sub-image file. When the main image file is specified, an image output process according to a subroutine shown in FIG. 13 is executed in step S75, and when the process is completed, the process proceeds to step S41.
[0067]
As can be understood from the above description, when the desired partial image is designated from the main image reproduced from the desired main image file in the reproduction mode, the sub-image file storing the image data corresponding to this partial image in a compressed state Is recorded on the recording medium 34. The file number of the main image file is embedded as a link file number in the sub image file. When a specific operation (scroll operation outside the range or an enlargement zoom operation) is performed while the sub-image reproduced from the sub-image file is displayed on the LCD 28, the main image file is specified based on the link file number, A part of the main image reproduced from the main image file is enlarged and displayed on the LCD 28. Since the size of the main image is larger than the sub-image, the corresponding enlarged image is displayed on the LCD 28 even when a scroll operation is performed outside the range of the sub-image. That is, it is possible to easily display an image of a portion not appearing in the sub-image.
[0068]
In this embodiment, the link file number for associating the main image file with the sub-image file is written in the sub-image file. However, the relationship between the two may be managed by a separately prepared table. Good.
[0069]
Further, in this embodiment, a one-way link from the sub-image file to the main image file is formed, but a two-way link is formed between the related main image file and sub-image file. Alternatively, a bidirectional link may be formed between a plurality of sub-image files having a common main image file. Then, it is possible to clearly grasp the relevance of the image file using the link information as a clue.
[Brief description of the drawings]
FIG. 1 is a block diagram showing one embodiment of the present invention.
FIG. 2 is an illustrative view showing one example of a mapping state of an SDRAM applied to the embodiment in FIG. 1;
FIG. 3 is an illustrative view showing one portion of an operation of the embodiment in FIG. 1;
4A is an illustrative view showing one example of a structure of a main image file created by the embodiment in FIG. 1; FIG. 4B is an illustrative view showing an example of a structure of a main image file created by the embodiment in FIG. 1; FIG.
FIG. 5 is an illustrative view showing one example of decompressed image data expanded on an SDRAM or a reproduced image displayed on an LCD;
FIG. 6 is an illustrative view showing one example of an enlarged image displayed on an LCD;
FIG. 7 is an illustrative view showing another example of the decompressed image data expanded on the SDRAM;
FIG. 8 is an illustrative view showing another example of the enlarged image displayed on the LCD;
FIG. 9 is an illustrative view showing one portion of an operation of the embodiment in FIG. 1;
FIG. 10 is an illustrative view showing another example of the enlarged image displayed on the LCD;
FIG. 11 is a flowchart showing a part of the operation of the embodiment in FIG. 1;
FIG. 12 is a flowchart showing another portion of the operation of the embodiment in FIG. 1;
FIG. 13 is a flowchart showing another portion of the operation of the embodiment in FIG. 1;
FIG. 14 is a flowchart showing yet another portion of the operation of the embodiment in FIG. 1;
FIG. 15 is an illustrative view showing one example of decompressed image data developed on an SDRAM in another embodiment of the present invention;
FIG. 16 is a flowchart showing a part of the operation of the embodiment in FIG. 15;
[Explanation of symbols]
10 ... Digital camera
14 ... Image sensor
20 ... Signal processing circuit
24 ... SDRAM
26 Video encoder
28 LCD
36 ... CPU
38 ... Operation panel

Claims (9)

Recording means for recording, as a second image signal, a partial image signal belonging to a specified partial area among the recorded first image signals;
Creating means for creating link information between the first image signal and the second image signal;
A second image display means for displaying a second image of a specified size having a specified zoom magnification based on the second image signal;
Detecting means for detecting the first image signal based on the link information when a specific operation directed to the second image signal is performed; and detecting the first image signal based on the first image signal detected by the detecting means. An image processing apparatus, comprising: first image display means for displaying a first image of the designated size having a designated zoom magnification. The recording unit includes an allocating unit that allocates area information on the specified partial area to the second image signal,
2. The image processing apparatus according to claim 1, wherein the second image display unit includes a second image signal writing unit that writes the second image signal in a memory area defined by a reference address and the area information. 3. The image processing apparatus according to claim 2, wherein the first image display unit includes a first image signal writing unit that writes the first image signal in a memory area starting from the reference address. 4. The area information according to claim 2, wherein the area information includes size information indicating a size of the specified partial area, and offset information indicating an offset between a reference position of the first image signal and a reference position of the specified partial area. Image processing device. The image processing apparatus according to claim 1, wherein the creating unit includes a link information assigning unit that assigns the link information to the second image signal. The second image corresponds to a part of the image signal forming the second image signal,
The image processing device according to claim 1, wherein the specific operation is a scroll operation of the second image. 7. The image processing device according to claim 6, wherein the scroll operation is a scroll operation to a position outside the range of the second image signal. The designated zoom magnification is a zoom magnification exceeding 1x,
The image processing device according to claim 1, wherein the specific operation is a display operation of the second image. A digital camera comprising the image processing device according to claim 1.

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