JP2008086029A - Image information transmission method and image information processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable desired color reproduction by skillfully utilizing a standard color space whose color gamut is extended. <P>SOLUTION: As information for reproducing the color and gradation information of image data encoded by the standard color space, an image file read portion 51 reads a file of the image data attached with state information by the use of specific codes, representing a state into which representation of the colors and gradations of the image data is adjusted. A judgement portion 52 selects image data of a suitable image block, based on header information in a file header block, and moreover selects a suitable correction processing. A correction processing portion 53 applies the correction processing to the image data, and its result is temporarily held in a memory (RAM). A monitor display portion 55 performs processing for displaying the image data of the correction result. A printer output portion 56 performs processing for outputting the image data of the correction result to a printer driver to perform printing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image information transmission method and an image information processing apparatus for outputting a color image.

  In the system from image data creation to display / output for some purpose to visual information (hereinafter referred to as the color reproduction system), the signal representing the color and gradation is processed. The system is distributed to multiple processes except when it is completed in one device. In order to finally reproduce colors and gradations in a desired state, the signal at each interface of the distributed process A common interpretation is required for the expression. For this reason, standardization has been carried out by academic societies and industry groups on the encoding and handling of various signals. In particular, for color space specifications, various color spaces based on colorimetric numerical standards based on the CIE 1931 standardcolorimetric system that defines the color matching function of standard observers by the International Commission on Illumination (CIE) and their encoding The definition of has also been standardized.

  If signals are transmitted based on these standards, color matching can be achieved in which desired colors can be reproduced colorimetrically. However, there are colors that cannot always be reproduced accurately due to the characteristics of input / output devices and encoding restrictions. To do. Therefore, colors that cannot be reproduced by a specific output device by techniques such as color gamut compression are mapped to approximate colors in the color gamut, and colors in the color gamut are adjusted accordingly to match the color appearance. Or correction processing for color reproduction that looks more preferable.

Japanese Patent Laid-Open No. 9-322009 Japanese Patent Laid-Open No. 2001-157069 Japanese Patent Laid-Open No. 10-224443 JP 2001-309296 A Japanese Patent Laid-Open No. 4-188954

  By the way, for example, the sRGB color space [IEC61966-2.1] is widely used as a de facto standard because of its ease of handling that if a signal value is output to a personal computer monitor as it is, the signal value is reproduced close to the intended color. DCF Version 1.0 [JEIDA-49-2-1998], which is compliant with many manufacturers as a standard for image files for digital still cameras, also defines that recording is performed on image data with color representation in the sRGB color space. . However, since the sRGB color space targets the gamma characteristics and color gamut of standard personal computer monitors, it is better not to generate colors outside the sRGB color gamut as much as possible when creating images for monitors. Usually, an image captured by a digital still camera is often stored in a YCC (luminance chromaticity separation color space) through an image creation process, and there is no concept of a color gamut when performing this processing, and sRGB colors Out-of-range color (YCC) has occurred. On the other hand, the color gamut of various color printers is different from that of sRGB (monitor), and generally the color gamut exceeds that of the monitor in the dark area, but is lower in the bright area. Therefore, when color printer output is assumed, it is better to perform image creation processing in consideration of the color gamut. In this way, in applications such as digital still cameras, when the output is diverse, if an image created for a certain device is output on another device, the gradation may be lost depending on the area. End up.

  In addition, when a virtual three-dimensional scene is represented by computer graphics without an input device, rendering processing is performed with a value proportional to the physical light intensity of the scene to generate image data. However, the result of adjusting the color and gradation according to the target monitor display is often recorded as image data by encoding in RGB space depending on the display device. For example, another display device such as a digital projector When correction is made to make full use of the color gamut and gradation characteristics, it is difficult to reproduce the original expression from the once encoded data.

  From such a background, the standard monitor characteristics defined by the sRGB color space and the ease of handling signals encoded by the observation environment remain, but the color gamut and bit depth that can be expressed are expanded to allow human perception. Color space that covers the range and expression range of various output devices, and a color space that can record signals that are more faithful to the scene by providing gradation characteristics that correspond one-to-one with the intensity of physical light Is being standardized. Among them, there is an extension of the sRGB color space (for example, IEC 61966-2.1 Annex G / Anex F) that is advantageous for encoding with an expression (Output-ready) that is closer to a state that can be output.

  In view of the conventional situation as described above, an object of the present invention is to make it possible to obtain a desired color reproduction by making good use of a standard color space with an expanded color gamut.

  Another object of the present invention is to enable appropriate image creation when an output device or application is identified.

  Another object of the present invention is to make it possible to obtain the best correction result efficiently.

  In addition, another object of the present invention is to create a new image data by selecting the data closest to the device to be output and the purpose when a plurality of image data created for different devices are stored. An object is to enable appropriate output without adjustment.

  In the present invention, images created for each device are stored simultaneously. Also, the image is stored in the scene reference space and the image is created on the output device.

  Furthermore, the present invention becomes more effective by constructing a mechanism that takes into account the following points including the existing technology.

  If image data using an appropriate image format or color space or a specific storage medium containing the image data is used, the desired color reproduction can be achieved by giving an appropriate adjustment instruction when handling the image within the range that the user can grasp the feature. The result can be obtained. Until now, the features (states) and applications of image data encoded in a specific image format or color space have been limited, and image input / output devices and application software correction processing modules are often used. In some cases, a desired color reproduction result can be obtained by performing an adjustment process based on automatic determination assuming a certain degree. However, in the future information environment called broadband, a variety of contents, sources from various input devices, output to various output devices, and various output applications are assumed even with a single device or application software. It becomes difficult to realize an optimal adjustment process based on judgment based on a uniform assumption. Further, as described above, a multipurpose extended color space and a format (for example, JPEG2000 [ITU-T Rec. T.801]) capable of selecting a plurality of color spaces are being standardized, and a specific image format or color space is being standardized. Even in this data, the expression intentions expected by users, content creators, devices, etc. will be mixed. Also, it is difficult to specify the state of what purpose correction and how much correction has been performed in the process of transmitting the image data itself. Therefore, there are many points that must be taken care of in order to obtain the desired color reproduction result by correctly handling the user, and it is difficult to manage by the user, or the correction process with hardware or software that operates automatically is excessive in multiple processes. There will also be a possibility of overlapping applications. In order to obtain a desired color reproduction by effectively using the new standard color space in such a situation, it is necessary to use a method for appropriately grasping the state and performing an appropriate adjustment process suitable for the purpose.

  There are various processes for appropriately correcting the expression of the color and gradation of the image, but in general, it is performed based on any of the following information.

  Content expression target: People, landscape, real objects, abstract objects, etc. Content production environment: Taken electronic photograph, 3D CG, 2D illustration, etc. Coding characteristics: Representable color gamut, gradation curve, bit Input device characteristics such as depth: Noise, dynamic range, spectral sensitivity, light source, etc. Output device characteristics: Reproducible color gamut, gradation curve, etc. Output application intention: Clean, faithful to the actual product, faithful to the production result, etc. Of these, the characteristics of the input device and output device are not required when the color coding is performed in a color space that does not depend on a device such as CIEXYZ or CIELAB, or a space that expresses the appearance of a color such as CIECAM97s. For dependent color spaces, refer to the device profile standardized by the ICC (International Color Consortium). Rukoto are possible, or only to be the specific definition in the specification of coded as sRGB color space. As for the intention of the output application, it is appropriate that the module itself that performs the adjustment process performs it with its own judgment and acquisition method. Some of the already standardized image formats that can be encoded and recorded in the header part, etc., have been filed for several patents. The method is desirable. Coding characteristics can be determined from the specifications of the image format. However, some adjustments have already been made to the already encoded image data, and what state it is in (whether it is not adjusted ?, what was the target if it was adjusted? ?) Is clear, and if you want to use image data in another adjustment state for the same content, it is not possible to know whether it exists and where it can be referenced. It remains as an issue to use.

  An image information transmission method according to the present invention that solves the above-described problem is a method for reproducing the color and gradation information of image data encoded by a standard color space. Information that describes the expression contents of the color and gradation of the image data indicating the state in which the expression is adjusted is attached to the image data with a specific code, and information with the specific code is attached. The transmitted image data is transmitted.

  In the present invention, as information for reproducing the color and gradation information of the image data encoded by the standard color space, the state in which the color and gradation expression of the image data is adjusted The image information processing apparatus is supplied with the image data in which information indicating the state of the image is attached with a specific code, and refers to the information attached with the specific code to the image data. Adjustment processing means for reproducing the color and gradation information of the image data by performing adjustment processing, and the information describing the expression contents of the color and gradation of the image data is attached by a specific code Image data is supplied, and adjustment processing is performed on the image data by the adjustment processing means based on information describing the expression contents of the color and gradation of the image data attached to the image data by the specific code. And characterized by applying.

  According to the present invention, even if image data of the same expression target (content) is obtained, the reproduction characteristics and usage forms of colors and gradations of various output devices can be obtained by appropriately grasping the encoding and adjustment states. Therefore, it is possible to determine what correction processing should be applied based on the information in the same file, and to improve color reproducibility even for image data encoded in the same color space Thus, a desired color reproduction can be obtained by making good use of a standard color space with an expanded color gamut.

  Further, in the present invention, if it can be determined that the stored image data is not adjusted for a specific device and is recorded with an expression closer to the scene, it is appropriate when the output device and application are found. Can be made.

  Further, in the present invention, when there is a possibility that some adjustment is applied to the image data already encoded for the same content, if it is desired to use image data in another adjustment state, Since it can be ascertained whether or not it exists and its reference destination, the best correction result can be obtained efficiently by reading out and using the data in the state closest to the purpose.

  Furthermore, in the present invention, when a plurality of image data created for different devices are stored, it is possible to determine which device has been adjusted for each device, Appropriate output can be performed without necessarily making new adjustments by simply selecting data in a state closest to the purpose.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  In the present invention, for example, image data is recorded in a file in a file format as shown in FIG.

  That is, the file format is composed of one header block HB and one or more image blocks IB1, IB2,.

  In the header block HB, a header block size HBS, a content creation environment CPE, a content expression target CEO, an image block number IBN, an image statement IST, a horizontal pixel number HSN, a vertical pixel number VSN, a color space CS, and an offset address OFA are recorded. The

  That is, in the header block HB, as information regarding the content represented by the image data, a code (Code 0 to 6) CPE indicating the production environment of the following Table 1 and a code (Code 0 to 7) indicating the expression target of the following Table 2 CEO is recorded.

  For each image block, a code indicating the adjustment state of the image data in Table 3 below, a code (Code 0 to 12) CS indicating a color space in Table 4 below, the number of vertical and horizontal pixels HSN, VSN, The offset address OFA at the head of the image block is recorded.

  In Table 3, the main code out of two codes indicating the adjustment state as the image statement IST indicates a state (Scene Referred State) referring to the scene to be expressed, which is linear with respect to the physical intensity of light. The image data is encoded with an arbitrary value or a value converted with a specific reversible function corresponding to it. On the other hand, 4 to 7 indicate a state (Output Ready State) adjusted to output, and are encoded with a value adjusted according to reproduction characteristics of a specific device.

  In each of the image blocks IB1, IB2,..., Image data encoded in a specific color space in a dot sequential RAW format from the upper left to the lower right is recorded side by side.

  Here, it is assumed that the image processing system 10 includes various flows that are displayed and output after image data as shown in FIG. 2 is generated and used. The image processing system 10 includes image data such as a subject or a document input via an image reading device 1 such as a digital still camera, a video camera, or an image scanner, and CG image data to be expressed created by the CG creation device 2. Image data edited by the image editing apparatus 3 from the image data or CG image data is supplied to the application 5 via the data transmission system 4 such as a network or a recording medium, and from the application 5 via the output device 6. Various outputs such as printer output, monitor output, television output, and screen output are obtained.

  In this image processing system 10, there is a high possibility that any part of the adjustment processing is performed in any part. However, the file format shown in FIG. An example of using will be described.

  The application 5 in FIG. 2 knows what device the user outputs and displays on which device, and it is appropriate for the image data in the file of the format from the information and the information in the file of the format. It is a module in the image processing apparatus that performs correction processing, and here it is assumed to be software operating on a personal computer.

  When it is determined that the user has instructed the user to open the file of the above format and display it on the screen, the application software performs a process of appropriately correcting the color and gradation according to the procedure shown in the flowchart of FIG. .

  That is, in step S1, it is determined whether an image block in the image state IST [4-x] is detected from the header block HB. Here, as shown in Table 3 above, the image state IST [4-x] indicates that the device targeted for adjustment is a monitor for a personal computer.

  If the determination result in step S1 is YES, that is, if an image block in the image state IST [4-x] is detected, the process proceeds to the next step S2. If the determination result at step S1 is NO, the process proceeds to step S4.

  In step S2, image data is read by the offset address OFA of the corresponding block.

  In the next step S3, it is determined from the header block HB whether the code CS indicating the color space is [3]. Here, the code CS [3] indicating the color space represents an sRGB (8 bit) space defined in IEC 61966-2.1 as shown in Table 4 above.

  If the determination result in step S3 is YES, that is, if the code CS indicating the color space is [3], the process proceeds to step S16. If the determination result at step S3 is NO, the process proceeds to step S15.

  In step S4, it is determined whether or not an image block whose image state IST is [3-0] or [2-0] is detected from the header block HB. Here, as shown in Table 3 above, the image state IST [3-0] represents a value that is intentionally adjusted within the visual color gamut without depending on a specific device. The image state IST [2-0] represents an adjusted value such as white balance and linear matrix conversion to a specific sensor space.

  If the determination result in step S4 is YES, that is, if an image block whose image state IST is [3-0] or [2-0] is detected, the process proceeds to the next step S5. If the determination result at step S1 is NO, the process proceeds to step S6.

  In step S5, image data is read from the offset address OFA of the corresponding block, and then the process proceeds to step S10.

  In step S6, it is determined whether or not an image block whose image state IST is [1-0] is detected from the header block HB. Here, as shown in Table 3 above, the image state IST [1-0] is a signal acquired by the image sensor, and is a value that may have been subjected to a noise cut process. Represents.

  If the determination result in step S6 is YES, that is, if the image state IST detects a [1-0] image block, the process proceeds to the next step S7. If the determination result at step S6 is NO, the process proceeds to step S11.

  In step S7, image data is read from the offset address of the corresponding block.

  In the next step S8, a white point is identified by generating a histogram.

  In the next step S9, white balance correction is performed in the linear space, and the result is converted into a scRGB (16 bit) space defined in IEC 61966-2.2. This color space is represented by the code CS [7] indicating the color space shown in Table 3 above.

  In the next step S10, color gamut compression processing is performed on values outside the color gamut represented by the code CS [3] indicating the color space, and then the process proceeds to step S15.

  In step S11, it is determined whether or not an image block whose image state IST shown in Table 3 is [5-0] or more is detected from the header block HB.

  If the determination result in step S11 is YES, that is, if an image block in the image state 5-0 is detected from the header block, the process proceeds to the next step S12. If the determination result at step S1 is NO, the process proceeds to step S14.

  In step S12, image data is read from the offset address OFA of the corresponding block.

  In the next step S13, all values in the color gamut of the device indicated by the image state IST are the colors in the sRGB (8-bit) space defined in IEC 61966-2.1 corresponding to the code CS [3] indicating the color space. Map into the area, and then proceed to step S15.

  In step S14, an instruction to display an error message is given.

  In step S15, the color space is converted into an sRGB (8 bit) space corresponding to the code CS [3] indicating the color space, and values outside the color gamut of the sRGB (8 bit) space are clipped at the time of encoding.

  In the next step S16, the monitor is instructed to display an image.

  The application software follows the flowchart shown in FIG. 4 when it is determined that the user has instructed the image content of the file displayed on the screen to be output to the color printer for viewing. The process of automatically and appropriately correcting the color and gradation is performed according to the procedure described above.

  That is, in step S21, it is determined whether an image block whose image state IST is [6-x] is detected from the header block HB. Here, the image state IST [6-x] represents output to various color printers as shown in Table 3 above.

  If the determination result in step S21 is YES, that is, if an image block in the image state IST [6-x] is detected, the process proceeds to the next step S22. If the determination result at step S21 is NO, the process proceeds to step S24.

  In step S22, image data is read from the offset address OFA of the corresponding block.

  In the next step S23, it is determined whether or not the color space is the same as the code of the printer input.

  If the determination result in step S23 is YES, that is, if the color space is the same as the code input color space, the process proceeds to the next step S36. If the determination result at step S23 is NO, the process proceeds to step S35.

  In step S24, it is determined whether or not an image block whose image state IST is [3-0] or [2-0] is detected from the header block HB. Here, the image state IST [3-0] represents a value that is intentionally adjusted within the visual color gamut without depending on a specific device. The image state IST [2-0] represents an adjusted value such as white balance and linear matrix conversion to a specific sensor space.

  If the determination result in step S24 is YES, that is, if an image block whose image state IST is [3-0] or [2-0] is detected, the process proceeds to the next step S25. If the determination result at step S21 is NO, the process proceeds to step S26.

  In step S25, image data is read by the offset address OFA of the corresponding block.

  In step S26, it is determined whether or not an image block whose image state IST is [1-0] is detected from the header block HB. Here, the image state IST [1-0] is a signal acquired by the image sensor and represents a value that may have been subjected to processing of about noise cut.

  If the determination result in step S26 is YES, that is, if an image block whose image state IST is [1-0] is detected, the process proceeds to the next step S27. If the determination result at step S26 is NO, the process proceeds to step S31.

  In step S27, image data is read from the offset address OFA of the corresponding block.

  In the next step S28, a white point is specified by generating a histogram.

  Further, in the next step S29, white balance correction is performed in the linear space, and the result is converted into the scRGB (16 bit) space defined in IEC 61966-2.2. This color space is represented by the code CS [7] indicating the color space shown in Table 3 above.

  In the next step S30, color gamut compression processing is performed on values outside the printer's color gamut, and then the process proceeds to step S35.

  In step S31, it is determined whether or not an image block having an image state IST of [4-0] or more is detected from the header block HB.

  If the determination result in this step S31 is YES, that is, if an image block whose image state IST is [4-0] or more is detected, the process proceeds to the next step S32. If the determination result at step S31 is NO, the process proceeds to step S34.

  In step S32, image data is read from the offset address OFA of the corresponding block.

  In the next step S33, all the values in the device color gamut indicated by the image state IST are mapped into the printer color gamut, and then the process proceeds to step S35.

  In step S34, an instruction to display an error message is given.

  In step S35, the color space is converted to printer RGB, and if there is a value outside the color gamut, it is clipped at the time of encoding.

  In the next step S36, the printer is instructed to output an image.

  Here, the color gamut compression process in step S10 or step S30 is performed by, for example, the color gamut compression method described in Japanese Patent Laid-Open No. 2000-278546, that is, converted into a perceptually uniform color space, before compression. The color difference minimizing method is performed such that the value of ## EQU2 ## and the value after mapping to the color gamut are minimum values representing the color difference in the color space.

  At this time, when the content expression target CEO in the header block HB is [4 to 6], that is, other than a person or a landscape, the weight of the saturation term in the color difference formula is increased so that the saturation is not lowered. Perform color reproduction.

  Further, in the intra-gamut map in step S13 and step S33, for example, when the content production environment CPE in the header block HB is other than [3-4], that is, except for computer graphics, the above-described color gamut compression processing is performed. Only out-of-gamut values are mapped to the in-gamut with the smallest color difference. Otherwise, in order to make full use of the color gamut of the device D to be output, the color gamut of the device S and the color gamut of the device D are analyzed, and values inside and outside the color gamut of the device D are appropriately mapped.

  Here, as shown in FIG. 5, the saturation value Cs on the axis of the same brightness and the same hue in the LCH color space composed of the axes of brightness, saturation, and hue, and the saturation value Cs_max of the gamut boundary of the device S are As mapped to the saturation value Cd_max at the color gamut boundary of the device D, for example, by converting to the saturation value Cd as shown in FIG. While the value is stored, the high saturation value is mapped in accordance with the color gamut of the device D.

Cd = k × (eCs / k−1) (1)
However, k is a coefficient determined by Cs_max and Cd_max.

  Note that there are various methods for achieving the same purpose as this, as disclosed in, for example, Japanese Patent Application Laid-Open Nos. 2000-350050 and 2001-43344.

  Here, in the embodiment described above, the present invention is executed by the application software. However, for example, the image processing is executed by the image processing apparatus 50 having a hardware configuration as shown in the block of FIG. You can also.

  That is, the image processing apparatus 50 includes an image file reading unit 51, a determination unit 52, a correction processing unit 53, an image file writing unit 54, a monitor display unit 55, a printer output unit 56, and the like.

  In this image processing apparatus 50, an image file reading unit 51 reads data in an image file recorded on an HDD, a memory card, a digital camera or the like according to the format shown in FIG. Based on the header information in the header block HB, the determination unit 52 selects image data of an appropriate image block and selects an appropriate correction process according to the procedure of the flowchart shown in FIG. 3 or FIG. The correction processing unit 53 performs a correction process on the image data and temporarily stores the result in a memory (RAM). The image file writing unit 54 records the corrected image data together with appropriate header information in the image file in the HDD according to the format shown in FIG. The image file itself may be written by adding or changing to the read file, or may be written to a newly created file.

  The monitor display unit 55 performs a process of displaying the correction result image data.

  The printer output unit 56 performs processing for outputting the image data of the correction result to the printer driver for printing.

  In the embodiment of the present invention described above, for example, data is created at a fixed resolution of 72 dpi for a monitor for a personal computer, and the maximum resolution is maintained for a color printer. The resolution may be different for image data in different states.

  Further, it is not necessary to perform the adjustment processing on all the original image data. For example, the image data to be displayed on the screen may be adjusted only for the number of pixels to be displayed.

  Further, the image data stored in the image block may be recorded in a data-compressed format. Information associated with compression may be recorded in each image block or header block. An existing image format having such a specification may be used for the image block.

  The code indicating the adjustment state may be subdivided by defining the adjusted item, the adjusted amount, and the like.

  Furthermore, the adjustment of the color / gradation targeted by the code indicating the adjustment state is not only applied to independent pixels, but may also be performed in connection with other pixels such as sharpness correction. Good.

It is a figure which shows typically the file format which records image data in a file in this invention. It is a block diagram which shows the structure of the image processing system to which this invention is applied. 4 is a flowchart showing a procedure of processing for correcting color and gradation executed when image data is output to a monitor according to the present invention. 6 is a flowchart illustrating a procedure of a process of correcting colors and gradations executed when image data is output to a color printer according to the present invention. It is a figure which shows typically the example of the color gamut conversion in the LCH color space in the said correction process. It is a figure which shows typically the example of conversion of the saturation in the said correction process. It is a block diagram which shows the hardware structural example of the image processing apparatus which concerns on this invention.

Explanation of symbols

  1 image reading device, 2 CG creation device, 3 image editing device, 4 data transmission system, 5 application, 6 output device, 10 image processing system, 50 image processing device, 51 image file reading unit, 52 determination unit, 53 correction processing 54, Image file writing unit, 55 Monitor display unit, 56 Printer output unit

Claims (10)

Indicates the state in which the color and gradation representation of the image data is adjusted as information for reproducing the color and gradation information of the image data encoded by the standard color space Information that describes the content of the color and gradation of the image data is attached to the image data with a specific code,
An image information transmission method characterized by transmitting image data with information by the specific code.   2. The image information transmission method according to claim 1, wherein a parameter indicating adjustment contents when adjusting the color and gradation expression of the image data is attached to the image data by a specific code.   A plurality of image data having different color and gradation adjustment states and a specific code indicating the adjustment state of each image data are stored in one data file for the same expression content. The image information transmission method according to any one of claims 1 and 2. Indicates the state in which the color and gradation representation of the image data is adjusted as information for reproducing the color and gradation information of the image data encoded by the standard color space An image information processing apparatus to which the image data to which information is attached by a specific code is supplied,
Adjustment processing means for reproducing the color and gradation information of the image data by performing adjustment processing on the image data with reference to information attached to the image data by the specific code;
The image data to which information describing the color and gradation expression contents of the image data is attached with a specific code is supplied, and the adjustment processing means is configured to output the image with the specific code added to the image data. An image information processing apparatus that performs an adjustment process on the image data based on information that describes data color and gradation expression contents.   The image data to which parameters indicating adjustment contents when adjusting the color and gradation expression of the image data are attached by a specific code is supplied, and the adjustment processing means adds the image data to the image data by the specific code. 5. The image information processing apparatus according to claim 4, wherein an adjustment process is performed on the image data based on a parameter indicating adjustment contents when the color and gradation expression of the attached image data is adjusted. .   6. The image information processing apparatus according to claim 5, wherein the adjustment processing means performs an adjustment process for returning the image data to a state before the adjustment based on a parameter indicating an adjustment content when the image data is adjusted. .   A single data file containing a plurality of pieces of image data having different color and gradation adjustment states and a specific code indicating the adjustment state of each image data is supplied to the same expression content, and the above adjustment is performed. 6. The image information processing apparatus according to claim 4, wherein the processing means specifies image data in the data file and performs adjustment processing.   8. The image information processing apparatus according to claim 7, wherein the adjustment processing means performs adjustment processing to reproduce the color and gradation expression according to the application based on information indicating the application of the image. .   8. The image information processing apparatus according to claim 7, wherein the adjustment processing unit performs an adjustment process for returning the image data to a state before the adjustment based on a parameter indicating an adjustment content when the image data is adjusted. .   10. The image information processing apparatus according to claim 9, wherein the adjustment processing unit performs adjustment processing to reproduce the color and gradation expression according to the application based on information indicating the application of the image. .

Images