WO2002041629A1

WO2002041629A1 - Image file generating device and digital still camera

Info

Publication number: WO2002041629A1
Application number: PCT/JP2001/010009
Authority: WO
Inventors: Ryuichi Shiohara; Yasumasa Nakajima; Kazunori Suenaga
Original assignee: Seiko Epson Corporation
Priority date: 2000-11-16
Filing date: 2001-11-15
Publication date: 2002-05-23
Also published as: JPWO2002041629A1

Abstract

Thumbnail image data and QVGA image data are generated from input main image data, and the two elements of reduced image data are stored in a recording medium as one Exif file along with the main image data. An inclusion in the Exif file of QVGA image data larger in the number of pixels than thumbnail image data enables a ultrahigh-speed/low-image-quality image output, high-speed/intermediate-image-quality image output and low-speed/high-image-quaity image output, thereby enabling selection of which element of reduced image data is to be used as a confirming image depending on an image outputting device.

Description

Description Image file generating apparatus and digital still camera

TECHNICAL FIELD The present invention relates to a technique for filing, transferring, displaying, and printing an image.

Background Art With the rapid spread of digital still cameras in recent years, images can be used between devices via removable memory, such as by playing back captured images with another digital still camera or outputting directly to a printer. The demand for things is growing. Under such demands, standardization of a file format for recording images taken by a digital still camera as digital data in various types of removable memories is being promoted. At present, an image file format standard for digital still cameras (hereinafter referred to as Exif) is being formulated based on a camera file system standard (Design rule for Camera File system; hereinafter referred to as DCF). For image files that conform to Exif 2.1, it is recommended that thumbnail image data of 160 x 120 pixels be attached to the main image data to enable high-speed image display and facilitate image confirmation. Have been.

In recent years, mobile phones have spread rapidly, and there is a growing demand for data communication by mobile phones, such as transmitting image data from digital still cameras to remote locations via mobile phones. waiting.

However, the thumbnail image data of 160 x 120 pixels specified by Exif is suitable for recording and high-speed display due to the small amount of data, but is clearly output during display and printing. There is a problem that an image becomes coarse.

The technological development of computers is remarkably rapid compared to other fields, the unit price per bit of recording media is falling rapidly, and the improvement of data processing speed is also remarkable. For this reason, the data amount of the 160 × 120 pixel thumbnail image may be unnecessarily too small in the current computer environment.

On the other hand, in data communication using mobile phones, the communication speed is slower than that of data communication via wired lines. It seems that it is necessary to transmit only the minimum necessary data even if the cost is sacrificed.

An object of the present invention is to generate or operate an image file capable of improving the quality of an output image for confirmation in accordance with technological development without impairing the convenience of using images between devices. An object of the present invention is to provide an image file generation device, a digital still camera, and an image file operation program.

Another object of the present invention is to provide an image processing apparatus capable of transferring image data having a small data size to a communication device.

DISCLOSURE OF THE INVENTION The image file generation device according to the first invention generates two reduced image data from input main image data, and combines these two reduced image data with the main image data.

'Store on a storage medium. Larger number of pixels than the first reduced image data By including the second reduced image data in the file, it is possible to output ultra-high-speed, low-quality images, high-speed, medium-quality images, and low-speed, low-quality images, depending on the device that outputs the image. It is possible to select whether to use the reduced image data as an image for confirmation. In addition, by setting the first reduced image data to a predetermined number of pixels defined by the standard, the data format is exchangeable between devices, and the second reduced image data is improved in data transfer speed and memory capacity. High-speed, high-quality images in line with technological developments such as increases can improve the quality of output confirmation images without impairing the convenience of using images between devices. it can.

Furthermore, by including the first reduced image data composed of 160 × 120 pixels in the file, the second reduced image data can be maintained while maintaining file compatibility between devices corresponding to EXif. By including in the file, the image quality of the output image for confirmation can be improved using the second reduced image data.

Further, by adopting a configuration in which the number of pixels of the second reduced image data can be selected, the image quality of the output image for confirmation can be arbitrarily selected from options prepared in advance. .

Further, by adopting a configuration in which the number of pixels of the second reduced image data can be arbitrarily changed, the image quality of the output image for confirmation can be arbitrarily changed.

Further, by including information on the number of pixels of the second reduced image data in the file including the main image data, the first reduced image data, and the second reduced image data, the number of pixels corresponding to the number of pixels at the time of outputting the image data is reduced. The speed of the enlargement / reduction processing can be increased. In addition, it is possible to easily determine which one of the main image data, the first reduced image data and the second reduced image data should be operated by checking the number of pixels of each image data when operating the image data. .

The digital still camera according to the second aspect of the invention displays the second reduced image data on the display device, so that the captured image can be displayed and confirmed at high speed with high image quality. Monkey

Furthermore, by adopting a configuration in which the timing for generating the second reduced image data can be arbitrarily determined, or a configuration in which it is possible to switch whether or not to generate the second reduced image data immediately after shooting. This makes it possible to reduce the amount of processing immediately after shooting during continuous shooting to shorten the shooting interval, or to reduce the overall amount of processing required for file generation, as needed. For example, when generating the second reduced image data from the main image data in the main storage device immediately after shooting and before compressing and storing the main image data in a nonvolatile recording medium that can be exchanged between devices, at least the second reduced image Since the amount of data to be generated increases the processing amount immediately after shooting, the shooting interval at which continuous shooting is possible becomes longer. On the other hand, when the main image data is compressed and stored in the non-volatile recording medium, the main image data is expanded and called in the main storage device, and when the second reduced image data is generated from the main image data, continuous shooting is possible. Although the shooting interval can be shortened, the data processing amount as a whole increases, so the power consumption increases and the number of shootable images decreases. As described above, the timing at which the second reduced image data is generated has advantages and disadvantages. Therefore, a configuration may be adopted in which the photographer can determine the timing for generating the second reduced image data as needed.

The digital still camera according to the third aspect of the present invention selects main image data or reduced image data from a file and transfers the selected image data to the communication device. Image data can be transferred to another communication device through a telecommunication line in a short time.

The digital still camera according to the fourth aspect of the present invention generates reduced image data having a smaller number of pixels than the image data from the image data, and transmits the reduced image data to the communication device. Image data can be transferred to another communication device via a telecommunication line in a shorter time than when data is transferred via a telecommunication line. Furthermore, by generating the reduced image data before the communication starts, the time from the start of the communication to the completion of the transmission of the reduced image data is shortened compared to the case of generating the reduced image data after the communication starts. be able to.

The image processing program according to a fifth aspect of the present invention is to output and select or print or display the second reduced image data having the second largest number of pixels from an image file having three image data having different numbers of pixels from each other. The image quality of the image can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing the structure of a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating the configuration according to the first embodiment of the present invention.

FIG. 3 shows a second embodiment of the present invention.

Confuse.

FIG. 4 is a schematic diagram for explaining the operation of the second embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS will be described several embodiments showing an embodiment of the present invention _t

(First embodiment)

FIG. 2 shows a first embodiment of the image file generating apparatus according to the present invention. Shows camera 1. The `` means for inputting main image data '' described in the claims mainly comprises an optical system 11, an area sensor 12, an AFE (Analog Front End) 13, an image generation unit 14, and a color space conversion unit 15. Is done. The “first image data generating means” and the “second image data generating means” described in the claims are mainly configured by the control unit 19. The “file means” described in the claims mainly includes a control unit 19, a compression processing unit 16, and a file unit 17. The “recording medium” described in the claims is constituted by the removable memory 18. The “means for displaying” described in the claims is mainly configured by the control unit 19 and the display unit 22. “Starting means” and “switching means” described in the claims are mainly constituted by the operation unit 21.

The optical system 11 includes an optical lens, an infrared cut filter, an optical low-pass filter, and the like, and forms an image of a subject as an input image on the area sensor 12.

The area sensor 12 is an optical sensor such as a CCD sensor or a CMOS sensor having a photoelectric conversion element group.Each photoelectric conversion element has one of C (Cyan), M (Magenta), Y (Yellow), and G (Green). A complementary color fill is provided. Each photoelectric conversion element is arranged in a matrix. The purpose of acquiring G color information in addition to CMY color information is to improve image quality by capturing G color information that is visually perceived as raw information. In the following description, it is assumed that an area sensor in which each of the photoelectric conversion elements is provided with a complementary color filter of C, M, Y, or G is used. A three-color complementary filter or RGB (Red, Green, Blue) primary color filters may be used. The analog signal of each color output from the area sensor 12 is input to the AFE 12.

The AFE 13 includes a program gain amplifier, a CDS circuit, an A / D converter, etc., samples analog signals output from each photoelectric conversion element and generates digital data of 10 to 12 bits for each color of CMYG. Digital data of CM YG The evening is input directly to the image generating unit 14 or after being stored in the buffer memory.

The image generation unit 14 is configured by a hardware method by controlling the AS IC in which a predetermined algorithm is realized by a logic circuit by the control unit 19, or by a software method using a DSP (Digital Signal Processor) engine. It is composed of When ASIC is used for the image generation unit 14, there is an advantage that the processing can be speeded up as compared with the case where the image generation unit 14 is configured by a software method. The image generation unit 14 performs automatic exposure processing (AE: Auto Exposure), automatic white balance processing (AWB: Auto White Balance), image generation processing, conversion processing from the CM YG color space to the RGB color space, and key correction. Processing is performed. The image generation processing here mainly generates image data having four values of each color of CMYG for each pixel using digital data representing the intensity of one of CMYG corresponding to the output of each photoelectric conversion element. This is the process to be performed. The conversion process from the CMYG color space to the RGB color space is performed by a hardware method using a 4 × 3 matrix operation processing circuit or a software method using a CPU using a multiplication circuit and an addition / subtraction circuit.

The color space conversion unit 15 is configured by a 3 × 3 matrix operation processing circuit, or is configured by a software method in a CPU 30 or the like using a multiplication circuit and an addition / subtraction circuit. Generate YCbCr digital pixel data from digital pixel data. In order to compress and record in the removable memory 18 in the JPEG file format, the color space converter 15 needs to output YCbCr digital pixel data rounded to 8 bits. For color space conversion, use the following formula based on ITU-R BT.601,

Y = 0.299R + .0587G + 0.114B

Cb two (-0.299R-0.587G + 0.886B) X 0.564 + offset

Cr = (0.701R-0.587G-0.114B) X 0.713 + offset

For example, Y = 0.2990R + .05870G + 0.1140B

Cb = -0.1687R-0.3313G + 0.5000B + 128

Cr = 0.5000R-0.4187G-0.0813B + 128

Can be used.

The compression processing section 16 is generally a dedicated chip for JPEG compression processing, and is configured by a hardware method, but can also be configured by a software method using DSP. The compression processing section 16 performs JΡG compression processing by discrete cosine transform (DCT) and Huffman coding. The compression processing section 16 may be provided with a function of decompressing a JPEG file so that the recorded image data can be quickly checked on the display section 22.

The file unit 17 records the JPEG-compressed image data in a removable memory 18 such as a compact flash memory by an Ex if file format.The control unit 19 is a microcomputer including a CPU 30, a R〇M 31, a RAM 32, and the like. It is evening. The control unit 19 executes the control program stored in the R〇M 31 on the CPU 30 to execute the optical system 11, the area sensor 12, the AFE 13, the image generation unit 14, the color space conversion unit 15, the compression processing unit 16, In addition to controlling the file unit 17, etc., it also performs main image data reduction processing composed of YCbCr pixel data generated by the color space conversion unit 15, and stores a 160 x 120 pixel thumbnail image in the RAM 32. Generate data and 320 x 240 pixel Q VGA image data. The RAM 32 temporarily stores main image data composed of YCbCr pixel data generated by the image generation unit 14, its reduced image data, a control program, and the like. The thumbnail image data corresponds to the first reduced image data described in the claims, and the QVGA image data corresponds to the second reduced image data described in the claims. Note that various processes performed by the image generation unit 14, the color space conversion unit 15, and the compression processing unit 16 The program may be executed in a software-like manner by executing the program: Also, when generating the thumbnail image data and another reduced image data in the second reduced image data, the number of pixels of the reduced image data is set to 3 here. Although the fixed number of pixels is set to 20 × 240 pixels, the user may input a desired number of pixels from the operation unit 21 and generate reduced image data of the input number of pixels. When QVGA is adopted as the size of the second reduced image data, while taking advantage of the 160 x 120 pixel thumbnail image de-emphasis that the image data decompression time is short and the work memory can be small, The second reduced image data is image data that can be printed with sufficiently high image quality as an image for confirmation.In addition, immediately after shooting, it is composed of YCbCr pixel data generated by the color space conversion unit 15. Generate thumbnail image data from the main image data, perform J peg compression processing on the main image data and thumbnail image data without generating the QVGA image data, and do not include the QVGA image data. f The file may be recorded in the removable memory 18 and then the main image data may be called from the removable memory 18 at the request of the user to generate the QVGA image data from the main image data. In this case, the user's request is accepted by an input using a key provided in the operation unit 21 as “activation means” described in the claims. In addition, whether or not to generate QVGA image data immediately after shooting is set by the user by inputting with a key provided on the operation unit 21 as “switching means” described in the claims. When QVGA image data is generated immediately after shooting, the amount of processing for generating QVGA image data can be reduced. When retrieving main image data from the removable memory 18 at the request of the user and generating QVGA image data from the main image data, the continuous shooting interval can be shortened by reducing the processing amount immediately after shooting. it can. Since the main image data is compressed and recorded in the removable memory 18, when generating QVGA image data from the main image data once recorded in the removable memory 18, a separate decoding process is performed. Management is required.

The display unit 22 as a display device described in the claims includes a video memory, an LCD (Liquid Crystal Display), and the like, and has a size of 320 × 240 pixels out of the image data reduced by the CPU 30. Display image data (hereinafter referred to as Q VGA image data) on the LCD. Note that thumbnail image data of 160 × 120 pixels may be displayed on the LCD. The QVGA image data or the thumbnail image data is read out from the removable bubble memory 18, decompressed, and displayed on a screen such as an LCD. When displaying QVGA image data on the LCD, the display speed is faster than when displaying main image data, and image quality is improved compared to when displaying thumbnail image data.The operation unit 21 is provided around the LCD It consists of various setting switches, power switch, shutter button, etc.

The two reduced image data generated in the RAM 32 by the CPU 30 are compressed together with the main image data according to the JPEG system, and are recorded together with predetermined auxiliary information as a file having a data structure conforming to EXif. Hereinafter, the structure of this file will be described with reference to FIG. The abbreviations used in the figures are the abbreviations used in the digital still camera image file format standard issued by the Japan Electronic Industry Development Association. The description of the main image data, thumbnail image data and their accompanying information is omitted because it is sufficient to record them in a format conforming to Exif 2.1.

Compressed QVGA image data and its accompanying information (hereinafter, compressed QVGA image data and its accompanying information are referred to as QVGA data) are compressed in the first thumbnail data segment of APP1 (application marker segment 1). It is stored in the segment (QVGA data) following the thumbnail image data and its attached information. The additional information here is necessary for decoding processing such as quantization tables and Huffman tables Information.

Ancillary information about the QVGA data (hereinafter referred to as the QVGA header) is stored in the Maker note 'segment in the ExFD IFD in the Oth IFD in APP1 (Application segment 1). The QVGA header includes a segment (QVGA 2 On / Off) indicating whether or not the file contains QVGA data, the data size and tag of the QVGA data, the pixel size of the QVGA image data, the offset to the QVGA image data, And a segment (QVGA) indicating the data length of the QVGA image data. The data of the QVGA header may be recorded in the Exif IFD, which is one layer up from the maker note. In this case, a dedicated tag is recorded in the Ex IFD segment, and QVGA header data is recorded following the dedicated tag.

When reading the Ex if file recorded in this way, it is possible to know whether or not the QVGA image data is included in the Ex if file by checking the value of the QVGA 2 On / Off segment. By examining the value of, you can access the QVGA data segment and read the QVGA data. When accessing the QVGA data segment from the QVGA segment, the offset data can be used to directly access the beginning of the QVGA data segment from the position of the offset data.

According to the digital still camera 1 of the first embodiment, the Ex if is supported by inserting the QVGA image data of 320 X 240 pixels in a predetermined position of the Ex if file in addition to the thumbnail image data of 160 X 120 pixels. It is possible to improve the image quality of the output image for confirmation without deteriorating the convenience of using the image between the devices. The QVGA image data size of 320 x 240 pixels is ideal for displaying on a mobile phone's LCD screen.

The present invention can be applied to a digital still camera as well as any image processing apparatus that records an image file on a recording medium in the format described above. For example In a computer that executes a photo retouching application, a procedure for recording image data in the format described above can be incorporated in the photo retouching application.

Further, in the first embodiment, the function of “means for inputting main image data” described in the claims is provided by an optical system 11, an area sensor 12, an AFE (Analog Front End) 13, an image generation unit 14, Although described as a function of the color space conversion unit 15, for example, when the image file generation device is realized as a personal computer, an input / output device that reads and writes a removable memory for exchanging data between the digital camera and the personal computer is used. The function of “means for inputting main image data” may be realized as the function.

(Second embodiment)

FIG. 3 shows a digital still camera 2 with a B1ueTooth interface as a second embodiment of the image file generating apparatus according to the present invention. The same components as those in the first embodiment are denoted by the same reference numerals as in the first embodiment, and description thereof is omitted. The connecting means described in the claims is constituted by a B1ueTooth interface (BTIF) 23. The transfer means described in the claims is mainly constituted by the control unit 19.

The BT IF 23 is composed of a DZA converter, an oscillation circuit, a modulation circuit, an antenna, etc., and performs data communication between the mobile phone and the digital still camera 2 away from the digital still camera 2 using short-range wireless communication. Is possible. The control unit 19 notifies the BT I F 23 of information necessary for receiving the data transmitted from the digital still camera 2 by the transfer destination mobile phone. The information required by the transfer destination mobile phone is recorded in a flash memory or the like (not shown) by the user using the operation unit 21 in advance. The BTIF 23 performs DZA conversion on the data transferred to the BTIF23, and transfers the data to a mobile phone on a predetermined carrier.

The CPU 30 stores data stored in an auxiliary storage device such as a flash memory (not shown). By executing the transfer program, the BT IF 23 transmits QVGA image data generated from the main image data of the Ex i: f file, part or all of the Ex i: f file recorded in the removable memory 18 or the Ex if file. The type of data transmitted through BT IF 23 is selected by the user.

The system constituted by the CPU 30 executing the data transfer program causes the display unit 22 to display a choice of transmission data, and waits for a user input from the operation unit 21. Options for outgoing data include those that transmit the entire Ex if file, those that extract and transmit the main image data and its accompanying information from the Ex if file, and those that extract the QVGA image data and its accompanying information from the Ex if file. And the one that extracts thumbnail image data and its attached information from the Ex if file and sends it. By selecting the main image data, thumbnail image data, or Q VGA image data from the Ex if file and transferring a part of the EX if file, compared to transferring the entire EX if file, other communication devices from the mobile phone Images can be transferred quickly.

When the user operates the operation unit 21 to select one of the options, the option is notified to the control unit 19. The control unit 19 specifies or generates necessary data according to the options, and transfers the data to the BT IF 23. For example, if the option to extract the QVGA image data and its associated information from the Ex if file and send it is selected, the user will try to make a call using the data representing the volume contents of the removable memory 18 stored in RAM 32. Identify the start address of the Ex if file, then read the data in removable memory 18 from that start address and check the value of the QVGA = On / Off segment. If QVGA = On / Off segment value indicates that QVGA data is recorded, QVGA data is read from QVGA data segment and QVGA data is transferred to BT IF 23. If the QVGA = On / Off segment value indicates that no QVGA data is recorded, an error message is displayed. Or read the main image data from the Image data segment, generate the QVGA image data by reducing the main image data, and transfer the QVGA image data and its accompanying information (QVGA data) to BTIF 23 . When the main image data is read from the Image data segment and the main image data is reduced to generate QVGA image data, the main image data is compressed and stored in the removable memory 18. Image decompression is needed overnight.

When transferring data to a device distant from the BTIF 23, the data is not only transferred to the mobile phone 4 (see Fig. 4) that has been set as a communication destination, but also transmitted remotely through the mobile phone communication network using the mobile phone 4 as a node. It is also possible to transfer to a local mobile phone 3 or to a remote computer 5 via the Internet. When data is transferred to a remote terminal via a wide area communication network, the address information of the remote terminal can be input using the operation unit 21.Data transfer is performed by directly specifying the transfer destination using the digital still camera 2. Alternatively, data can be temporarily transferred to the mobile phone 3 and then transferred to another terminal using the Internet mail function of the mobile phone 3 or the like. When the transfer destination is directly specified by the digital still camera 2 and data is transferred to a remote terminal during communication with the mobile phone 4, it is desirable to generate the data to be transferred before starting communication. . For example, if Q VGA data to be transferred is generated after the start of communication, the time required from the start of communication to the completion of data transfer is lengthened, resulting in an increase in communication cost.

The interface between the digital still camera 2 and the mobile phone 4 is not limited to B1eTooth, but may be, for example, a cable connection.

According to the digital still camera 2, since part of the Exif file can be extracted, image data having a small data size can be transferred to a mobile phone (third embodiment). Next, an image processing program according to a third embodiment of the present invention will be described. The image processing program according to the third embodiment is recorded on, for example, a personal computer 5 shown in FIG. This image processing program extracts QVGA image data from a plurality of Ex if files recorded on a given volume, and displays or prints a list on a display, and determines what image data is recorded on that volume. This is a program to confirm.

The procedure for extracting QVGA image data from an Exif file is as follows. Check whether the QVGA data is included in the Exif file by checking the value of the QVGA = On / Off segment shown in Fig. 1, and access the QVGA data segment by checking the value of the QVGA segment. Read the QVGA data. When accessing the QVGA data segment from the QVGA segment, use the offset data to directly access the beginning of the QVGA data segment from the position of the offset data. QVGA image data is expanded using the attached information and output to a display or printer.

According to the third embodiment of the present invention, the image is displayed and printed based on the QVGA image data having a larger number of pixels than the thumbnail image data, so that the image quality of the output image for confirmation can be improved.

Claims

The scope of the claims

1. means for inputting main image data;

First image data generation means for generating a first reduced image data having a predetermined number of pixels smaller than the number of pixels of the main image data from the main image data,

Second image data generating means for generating, from the main image data, second reduced image data having a number of pixels smaller than the number of pixels of the main image data and larger than the number of pixels of the first reduced image data;

File means for storing the main image data, the first reduced image data and the second reduced image data in a recording medium as one file which can be read individually;

An image file generation device comprising:

2. The image file generating apparatus according to claim 1, wherein the first image data generating means generates the first reduced image data composed of 160 × 120 pixels.

3. The second image data generating means includes means for allowing a user to select the number of pixels, and means for generating the second reduced image data having the number of pixels selected by the user from the input image data. The image file generation device according to claim 1 or 2,

4. The second image data generating means includes means for allowing a user to input an arbitrary number of pixels, and means for generating the second reduced image data having the number of pixels input by the user from the input image data. The image file generation device according to claim 1 or 2, wherein:

5. The file means, wherein a file including the main image data, the first reduced image data, and the second reduced image data includes information on the number of pixels of the second reduced image data. The image file generation device according to any one of

6. The image file generation device according to any one of claims 1 to 5,

A display device;

Means for displaying the second reduced image data on the display device,

A digital still camera comprising:

7. Start-up means for causing the second image data generating means to generate the second reduced image data,

The digital still camera according to claim 6, further comprising:

8. The digital still camera according to claim 6, further comprising: means for switching whether or not to cause the second image data generating means to generate the second reduced image data immediately after photographing.

9. Image data generating means for generating main image data and reduced image data having a smaller number of pixels than the number of pixels of the main image from the input image,

File means for storing the main image data and the reduced image data as one file in a recording medium;

Connection means capable of communicating with a communication device connected to the telecommunication line,

A transfer unit that selects the main image data or the reduced image data from a file recorded on the recording medium and transfers the selected image data to the communication device through the connection unit;

A digital still camera comprising:

10. An image data generating means for generating image data from an input image,

File means for storing the image data in a recording medium,

Reduced image data generating means for generating reduced image data having a smaller number of pixels than the number of pixels of the image data from the image data stored in the recording medium;

Connection means capable of communicating with a communication device connected to the telecommunication line, Transfer means for transferring the reduced image data to the communication device through the connection means.

11. The digital still camera according to claim 10, wherein the reduced image data generating means generates the reduced image data before the communication device starts communication.

12. Two pieces of image data of one image having different numbers of pixels from each other, that is, main image data, first reduced image data, and second reduced image data. A step of selecting the second reduced image data from an image file having three image data in which the number of pixels is reduced in the order of one reduced image data; and causing a printer to print the second reduced image data. Instructions,

An image processing program for causing a computer to execute

13. The image processing program according to claim 12, causing a computer to execute a procedure for displaying the second reduced image data on a display device.

14. A computer-readable recording medium on which the image processing program according to claim 12 is recorded.