JP4027254B2 - Image processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image processing apparatus, and more particularly to an image processing apparatus which is applied to, for example, a digital camera and records a partial image signal belonging to a specified partial area as a second image signal among recorded first image signals.
[0002]
[Prior art]
An example of a conventional image processing apparatus of this type is disclosed in Patent Document 1. According to this prior art, when the set button is operated in a state where an image reproduced from a recording medium is displayed on the LCD, a partial image at the center of the screen is enlarged and displayed. Further, when the direction instruction button is operated in a state where the enlarged image is displayed, the display area is moved, and when the enlarged image of a desired portion is displayed, when the shutter button is operated, the enlarged image is displayed. It is recorded on the recording medium as a separate file.
[0003]
Accordingly, when an enlarged image recorded as a separate file is reproduced and the set button is operated, a re-enlarged image obtained by further enlarging the central portion of the enlarged image is displayed. In addition, when the direction instruction button is operated in this state, the display area moves.
[0004]
Since the range in which the display area can be moved is limited, the operation of the direction instruction button becomes invalid when the edge of the display area reaches the edge of the reproduced image.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 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 a cumbersome operation such as searching for an original image.
[0007]
Therefore, a main object of the present invention is to provide an image processing apparatus that can easily reproduce an image of a portion that does not appear in a reproduced image.
[0008]
[Means for Solving the Problems]
An image processing apparatus according to the present invention includes a recording means for recording a partial image signal belonging to a specified partial area as a second image signal among recorded first image signals, and link information between the first image signal and the second image signal. Creation means for creating, second image display means for displaying a second image of a designated size having a designated zoom magnification based on the second image signal, link information when a specific operation directed to the second image signal is performed Detection means for detecting a first image signal based on the first image display means, 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 detection means.
[0009]
[Action]
When a partial area is designated from the recorded first image signal, the partial image signal belonging to the designated partial area is recorded by the recording means. 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 detection unit detects the first image signal based on the link information. The first image display means displays a first image having a specified size having a specified zoom magnification based on the detected first image signal.
[0010]
As described above, 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. As a result, an image that does not appear in the second image can be displayed.
[0011]
Preferably, the recording unit assigns region information regarding the designated partial region to the second image signal. The second image display means writes the second image signal in 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 in the memory area starting from the reference address. As a result, the first image signal is written in the memory so that portions common to the second image signal overlap each other, and address management 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 an offset between the reference position of the first image signal and the reference position of the designated partial area.
[0013]
Preferably, the creation unit assigns link information to the second image signal. This facilitates handling of link information.
[0014]
Preferably, the second image corresponds to a part of image signals 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, this scrolling operation is a scrolling operation outside the range of the second image signal.
[0015]
Preferably, the designated zoom magnification is a zoom magnification larger than “1.0”, and the specific operation is a display operation of the second image at the zoom magnification.
[0016]
【The invention's effect】
According to this 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. As a result, an image that does not appear in the second image can be displayed.
[0017]
The above object, 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, thereby generating a charge corresponding to the optical image, that is, a raw image signal. The number of effective pixels of the image sensor 14 is horizontal 640 pixels × vertical 480 pixels, and the generated raw image signal also has a size of horizontal 640 pixels × vertical 480 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 readout command is given from the CPU 36 to the TG 18, a signal processing command is given from the CPU 36 to the signal processing circuit 20, and a compression command is given from the CPU 36 to the JPEG codec 30.
[0020]
In response to the given command, the TG 18 exposes the image sensor 14 and reads out the electric charge generated by the exposure, that is, the 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. Note that the CDS / AGC / AD circuit 16 also 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 horizontal 640 pixels × vertical 480 pixels. The output image data is written into 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 by the JPEG method. The compressed image data obtained by JPEG compression is written into 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 on the recording medium 34 in a file format. An image file storing the compressed image data is created on the recording medium 34. 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 “compressed main image data”. The 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. In the header data, a file number, an identifier, zoom magnification information, size information, and address information are embedded. Among these, for the main image file, “Prm” is described as an identifier, “1.0” is described as zoom magnification information, “horizontal 640 pixels × vertical 480 pixels” is described as size information, and address information (0, 0) is described.
[0026]
When the reproduction mode is selected by the mode selector switch 38e and a desired main image file is selected by the update button 38c, the main image file is reproduced by the CPU 36. 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 horizontal 640 pixels × vertical 480 pixels from a desired main image file. The read compressed main image data is written into 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 command includes size information (= horizontal 640 pixels × vertical 480 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 by the JPEG method. The JPEG codec 30 also accesses the SDRAM 24 through the memory controller 22, and writes the decompressed main image data in the decompressed image area 24a according to the size information and address information included in the decompression instruction.
[0029]
The expanded image area 24a has a capacity capable of storing image data having a number of pixels exceeding 640 pixels in the horizontal direction and storing image data having a number of pixels exceeding 480 pixels in the vertical direction. The decompressed main image data is written in the decompressed image area 24a in a bitmap form with reference to 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 the decompressed main image data corresponding to the set size (= horizontal 640 pixels × vertical 480 pixels) with reference to the set address (= (0, 0)). 26 also performs a zoom process according to the set zoom magnification (= 1.0) and an encode process according to the NTSC format on the read expanded main image data, which is read from the frame FL0 shown in FIG. A 1 × zoom process and an encoding process are performed, and a 1 × zoom composite video signal in accordance with the NTSC format is output from the video encoder 26. As a result, reproduction at a normal magnification (= 1.0 ×) is performed. 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 24 a, the same main image shown in FIG. 5 is displayed on the entire screen of the LCD 28.
[0032]
When the enlargement button 38b is operated once in a state in which the reproduction image with the normal magnification is displayed, the zoom magnification, the read size, and the read start address set in the video encoder 26 are updated by the CPU 36. Specifically, the zoom magnification is updated to “2.0”, the read size is updated to horizontal 320 pixels × vertical 240 pixels, 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 zooming. A double-magnified image is output from the LCD 28.
[0033]
Therefore, when the enlarge button 38b is operated while the main image shown in FIG. 5 is displayed, the main image is updated to the enlarged image shown in FIG.
[0034]
In this embodiment, every time the enlarge 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. Are updated in the order of “horizontal 640 pixels × horizontal 480 pixels” → “horizontal 320 pixels × vertical 240 pixels” → “horizontal 160 pixels × vertical 120 pixels” → “horizontal 80 pixels × vertical 60 pixels”, and 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” every time the enlargement button 38b is operated.
[0035]
When the scroll button 38d is operated while an enlarged image is displayed, the vertical address value or horizontal address value forming the read start address is updated by the CPU 36. Specifically, “8” is added to the vertical address value when the scroll button 38d is operated downward, and “8” is subtracted from the vertical address value when the scroll button 38d is operated upward. 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 the enlarged image is displayed, the CPU 30 gives a compression command to the JPEG codec. This compression command includes the read start address and read size currently set in the video encoder 26 as address information and size information.
[0037]
The JPEG codec 30 identifies the current effective frame based on the address information and size information included in the given compression instruction, reads the partial image data in the effective frame through the memory controller 22, and reads the read portion. JPEG compression is applied to the image data. The compressed image data generated by JPEG compression is written into the compressed image area 24 b 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 on the recording medium 34 in a file format. An image file storing the compressed image data is created on the recording medium 34.
[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 the file format.
[0040]
In the following description, the image file created in response to the operation of the shutter button 38a in the playback mode is defined as “sub-image file”, and the compressed image data stored in the sub-image file is defined as compressed sub-image data. The decompressed image data based on the compressed sub-image data is defined as decompressed sub-image data.
[0041]
The sub-image file has a structure shown in FIG. Similar to the main image file, the sub-image file includes header data and compressed sub-image data. Further, 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, readout size, and readout start address set in the video encoder 26 when the shutter button 38a is operated are the zoom magnification information, size information, and address. Described as information. For the sub-image file, the file number of the main image file that is the source of the enlarged image that was reproduced when the shutter button 38a was operated is embedded in the header data as a link file number. Note that 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 the sub-image file, and the detected information is used as a zoom magnification and a read start address. 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. This 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. Thereafter, the JPEG codec 30 accesses the SDRAM 24 through the memory controller 22, and writes the decompressed sub-image data in the decompressed image area 24a according to the size information and address information included in the decompression instruction. The decompressed sub-image data is stored in an 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 the 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 the decompressed sub-image data corresponding to the set size from the set address, and encodes the read decompressed sub-image data according to the set zoom magnification and the NTSC format. 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 enlarge button 38b is operated while 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 enlarge button 38b is operated in a state where 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. An enlarged image shown in FIG. 8 is displayed on the LCD 28.
[0047]
When the scroll button 38d is operated while an 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 that of the main image, and the scrollable range is also narrower than that of 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 is 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, when 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 is stored in the expanded image area. 24a is expanded. As a result, the enlarged image shown in FIG.
[0050]
When the playback mode is selected, the CPU 36 executes processing according to the flowcharts shown in FIGS. A control program corresponding to this 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 video encoder uses the numerical values indicated by the detected information as the zoom magnification, read size, and read start address. Set to 26.
[0052]
In step S9, image output processing is executed according to the 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 instruction including the detected information is given to the JPEG codec 30. As a result, the compressed image data stored in the compressed image area 24 b is expanded by the JPEG codec 30, and the expanded image data is expanded in the expanded image area 24 a of the SDRAM 24. The expanded image data is read out by the video encoder 26, and as a result, the reproduced image is displayed on the LCD 28. When the process of step S53 is completed, the process returns to the upper layer routine.
[0053]
Returning to FIG. 11, in step S11, it is determined whether or not the update button 38c is operated. If YES is determined here, the file number N is updated in step S13, and then the processes of 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 whether or not the shutter button 38a is operated in a step S15. If “YES” here, the currently activated frame is determined in a step S17. If the frame FL0 is a valid frame, a message to invalidate the button operation is output in step S20, and then the process returns to step S11. The button operation is disabled 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 step S17, and the sub-image recording process is executed in step S19. This process follows the subroutine shown in FIG.
[0055]
Referring to FIG. 14, in step S61, the file number of the related main image file is detected. If the image file currently being reproduced is a main image file, the file number of the main image file is detected. If the image file currently being reproduced 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, size information, and address information, the zoom magnification, readout size, and readout start address set in the video encoder 26 are described. Further, the file number specified in step S61 is described as the link file number.
[0057]
In step S65, a compression command 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, 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 compressed sub-image data thus obtained is written into 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 34. When the recording is completed, the routine returns to the upper hierarchy routine.
[0059]
Returning to FIG. 11, if NO is determined in step S15 or S17, it is determined whether or not the scroll button 38d is operated in step S21. If “YES” here, the currently activated frame is determined in a step S23. If the frame FL0 is a valid frame, it is considered that scrolling is 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 an effective frame, NO is determined in step S23, and it is determined in step S25 whether or not this effective frame can be scrolled. If the operation of the scroll button 38d instructs to move within the range of the decompressed image data stored in the decompressed image area 24a, the process directly proceeds to step S33, and the readout 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. When the process of step S33 is completed, the process returns to step S11.
[0061]
If the operation of the scroll button 38d instructs to move the decompressed image data stored in the decompressed image area 24a outside the range, the process proceeds to step S27, and the currently reproduced image file is the main image file and the subsidiary image file. Determine which image file it is. If it is determined that the file is a 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, when it is determined in step S27 that it is a sub image file, a main image file related to the 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, image output processing according to the subroutine shown in FIG. 13 is executed in step S31, and then 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. When the process of step S33 is completed, the process returns to step S11.
[0063]
In step S37, it is determined whether or not the enlarge 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 step S39, it is determined whether or not the current zoom magnification is “8.0”. If YES is determined here, the process directly returns to step S11. On the other hand, when it is determined NO, the zoom magnification, the read size, and the read start address set in the video encoder 26 are updated in steps S41, S43, and S45, and then 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 in a state where the sub image is displayed, the related main image file is reproduced. For example, when the enlarge 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 a process according to the flowchart shown in FIG. 16 instead of the flowchart shown in FIG. However, since 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, only steps S71 to S75 will be described. To do.
[0066]
If it is determined in step S39 that enlargement processing is possible, it is determined in step S71 whether the image file currently being reproduced is a main image file or a sub image file. If it is determined that the file is a 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 as 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 the 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 seen from the above description, when a desired partial image is designated from the main image reproduced from the desired main image file in the reproduction mode, a sub-image file that stores image data corresponding to the partial image in a compressed state Is recorded on the recording medium 34. In the sub image file, the file number of the main image file is embedded as a link file number. When a specific operation (scrolling out of range or enlargement zooming operation) is performed in a state where 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 that of the sub-image, the corresponding enlarged image is displayed on the LCD 28 even when the scroll operation is performed outside the range of the sub-image. That is, it is possible to easily display an image of a portion that does not appear in the sub-image.
[0068]
In this embodiment, the link file number for associating the main image file and the sub image file is written in the sub image file. However, the relationship between the two may be managed by a table prepared separately. Good.
[0069]
In this embodiment, a one-way link from the sub image file to the main image file is formed. However, a two-way link is formed between the related main image file and the sub image file. Further, a bidirectional link may be formed between a plurality of sub-image files having a common main image file. Then, it becomes 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 an embodiment of the present invention.
FIG. 2 is an illustrative view showing one example of a mapping state of the SDRAM applied to the embodiment in FIG. 1;
3 is an illustrative view showing one portion of operation of the embodiment in FIG. 1; FIG.
4A is an illustrative view showing an example of a structure of a main image file created by the embodiment of FIG. 1, and FIG. 4B is an example of a structure of a main image file created by the embodiment of FIG. 1; It is an illustration figure shown.
FIG. 5 is an illustrative view showing an example of decompressed image data developed 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 the LCD.
FIG. 7 is an illustrative view showing another example of decompressed image data developed in the SDRAM.
FIG. 8 is an illustrative view showing another example of an enlarged image displayed on the LCD.
FIG. 9 is an illustrative view showing one portion of operation of FIG. 1 embodiment;
FIG. 10 is an illustrative view showing another example of an enlarged image displayed on the LCD.
FIG. 11 is a flowchart showing a part of the operation of the embodiment in FIG. 1;
12 is a flowchart showing another part of the operation of the embodiment in FIG. 1; FIG.
FIG. 13 is a flowchart showing still another portion of the operation of FIG. 1 embodiment;
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 in an SDRAM according to 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 ... Control panel

Claims (9)

A recording means for recording a partial image signal belonging to the designated partial area among the recorded first image signals as a second image signal;
Creating means for creating link information between the first image signal and the second image signal;
Second image display means for displaying a second image of a specified size having a specified zoom magnification based on the second image signal;
Detection 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 the first image signal detected by the detection means based on the first image signal An image processing apparatus comprising first image display means for displaying a first image of the specified size having a specified zoom magnification. The recording means includes assigning means for assigning area information relating to the designated partial area to the second image signal;
The image processing apparatus according to claim 1, wherein the second image display means includes second image signal writing means for writing the second image signal in a memory area defined by a reference address and the area information. The image processing apparatus according to claim 2, wherein the first image display means includes first image signal writing means for writing the first image signal in a memory area starting from the reference address. The area information includes size information indicating a size of the designated partial area, and offset information indicating an offset between a reference position of the first image signal and a reference position of the designated 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 apparatus according to claim 1, wherein the specific operation is a scroll operation of the second image. The image processing apparatus according to claim 6, wherein the scrolling operation is a scrolling operation outside the range of the second image signal. The designated zoom magnification is a zoom magnification exceeding 1 ×,
The image processing apparatus according to claim 1, wherein the specific operation is a display operation of the second image. A digital camera comprising the image processing apparatus according to claim 1.

Images