WO2002065766A1 - Creation of image file - Google Patents
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- WO2002065766A1 WO2002065766A1 PCT/JP2002/001058 JP0201058W WO02065766A1 WO 2002065766 A1 WO2002065766 A1 WO 2002065766A1 JP 0201058 W JP0201058 W JP 0201058W WO 02065766 A1 WO02065766 A1 WO 02065766A1
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- WIPO (PCT)
- Prior art keywords
- image
- data
- image processing
- image file
- image data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
- H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera
- H04N5/772—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera the recording apparatus and the television camera being placed in the same enclosure
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- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
- H04N1/00244—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server with a server, e.g. an internet server
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- H04N1/21—Intermediate information storage
- H04N1/2104—Intermediate information storage for one or a few pictures
- H04N1/2112—Intermediate information storage for one or a few pictures using still video cameras
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- H04N1/32128—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title attached to the image data, e.g. file header, transmitted message header, information on the same page or in the same computer file as the image
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- H04N1/4486—Rendering the image unintelligible, e.g. scrambling using digital data encryption
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- H04N1/6086—Colour correction or control controlled by factors external to the apparatus by scene illuminant, i.e. conditions at the time of picture capture, e.g. flash, optical filter used, evening, cloud, daylight, artificial lighting, white point measurement, colour temperature
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- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
Definitions
- the present invention relates to a technique for generating an image file in which image data and associated data are associated.
- the digital still camera DSC records images in the form of digital data using CCD.
- the photographer can view and delete the captured images using the LCD display mounted on the DSC.
- the image data captured by the DSC can be output to an image using a general-purpose personal computer, for example, displayed on a monitor or printed on a computer.
- DSC has different brightness and color characteristics of the image depending on the manufacturer and model. There are also differences in characteristics depending on the type of image output device. Due to these differences, the output result of the image was often different from the photographer's intention.
- image file in which image processing control data for controlling image processing is added to image data.
- the image file includes shooting conditions such as shutter speed and exposure time.
- these ancillary data include those that are individually set by the DSC manufacturers to produce their characteristics, and it may be desirable to avoid disclosing detailed contents.
- image data There is a similar requirement for image data itself. Conventionally, such confidentiality of data has not been considered.
- the DSC has been described as an example, but a similar problem may occur in an image data generating device such as a digital video camera or a scanner.
- the present invention has been made to solve the above-described problems, and has as its object to provide a technique of generating an image file in which image data and associated data are associated with each other while ensuring confidentiality of predetermined data. And Disclosure of the invention
- the present invention employs the following configurations.
- the first image file generation device of the present invention is:
- An image file generating apparatus for generating an image file in which image data is associated with data attached to the image data
- a data input unit for inputting the image data and the attached data, an encryption unit for encrypting a part of the image data and the attached data, and associating the image data with the attached data;
- An image file generation unit that generates an image file in which
- the gist is to provide.
- the image file generation device of the present invention generates an image file in which image data is associated with data attached to the image data.
- association means both a format that includes both of them, and a format that includes information for associating them with each other in at least one file while both files are separate files.
- the narrow sense refers to the former, and the broad sense includes both the former and the latter.
- an image file in the Exif format has an area for storing image data and an area for storing auxiliary data.
- the attached data includes image processing control data and image acquisition information.
- image processing control data is data for controlling image processing performed on image data by the image processing apparatus.
- the image processing device executes the image processing control data.
- the parameters used for image processing can be automatically set and image processing can be performed. These parameters include “contrast”, “brightness”, “color balance”, “saturation”, “sharpness”, “gamma value”, and “target color space”.
- Expoing color space is a parameter that specifies the color space used in image processing according to the color space used when generating the image data, for example, the sRGB color space or the NTSC color space.
- the image acquisition information corresponds to, for example, in the case of a DSC, shooting conditions such as a shirt evening speed, exposure, and an aperture.
- ancillary data are usually set by the manufacturer of the image file generation device, so there may be cases where you do not want to disclose them without restriction. In particular, you may not want your competitors to know the content of the ancillary data.
- the image data and a part of the attached data for example, data that is not desired to be released without restriction are encrypted. As a result, the confidentiality of the attached data can be ensured in the image file in which the image data and the attached data are associated.
- the image data may be encrypted.
- the thumbnail can be displayed, but the original image cannot be displayed without decoding.
- the unencrypted data can be used without being decrypted.
- an image output device that cannot decrypt can only use the attached data, and can secure the output of image data.
- Various encryption methods can be applied to the encryption. For example, sender and receiver And a public key method in which the transmitting side and the receiving side do not use a common key.
- a public key system using a public key specified by the image processing apparatus is desirable.
- the image file generation device performs encryption using the public key. Since this encrypted data can be decrypted only with the decryption key that is paired with the public key, confidentiality between the image file generating device manufacturers can be ensured.
- the image processing apparatus can support image file generating apparatuses of a plurality of manufacturers simply by preparing one decryption key.
- the image processing device may hold the decryption key corresponding to each of the manufacturers of the image file generating device.
- the attached data includes image processing control data used for image processing of the image data,
- the encryption unit may encrypt at least the image processing control data.
- the second image file generation device of the present invention includes:
- An image file generating apparatus for generating an image file in which image data is associated with data attached to the image data
- An image data input unit for inputting the image data
- Attached data input unit for inputting the attached data at least partially encrypted
- An image file generation unit that generates an image file in which the image data and the at least a part of the attached data are encrypted
- the gist is to provide.
- an image file is generated by using attached data at least partially encrypted in advance.
- the confidentiality of the attached data can be ensured even if the image file generation device does not include the encryption unit.
- the attached data can include various data. For example,
- the accessory data may be output control data for controlling image output on the image output device side.
- a print command corresponds to the output control data.
- the image file generation device of the present invention is applicable to various image data generation devices, and can be applied to, for example, a digital camera.
- the digital camera may be a DSC or a digital video camera.
- the present invention can also be configured in the form of an image processing device that performs predetermined image processing on image data. This aspect corresponds to the above-described relationship between the image file generation device and the sub combination.
- An image processing apparatus for performing predetermined image processing on image data, wherein the image data is associated with image processing control data used for image processing of the image data, and a part of the image data is encrypted.
- Input image file Image file input section
- a decryption unit that decrypts an encrypted part of the image file
- An image processing unit that performs predetermined image processing on the image data using the image processing control data
- the gist is to provide.
- the decryption unit holds information necessary for decryption, for example, a decryption key paired with an encryption key.
- An image processing control data storage unit that stores the image processing control data, wherein the image processing unit stores the image processing control data storage unit when the decryption unit cannot decrypt the encrypted part of the image file. It is preferable that predetermined image processing is performed on the image data using the image processing control data stored in the storage device.
- the image processing device of the present invention can be applied to various image output devices, for example, a color printer. It can also be applied to monitors such as CRT displays and liquid crystal displays.
- the present invention may be configured, for example, as a recording medium in which at least a part of the attached data that has been encrypted is computer-readable.
- the second image file generating device of the present invention can generate an image file using the attached data recorded on the recording medium.
- the present invention can be configured as an invention of an image file generating method and an image processing method, in addition to the configuration as the image file generating device and the image processing device described above.
- the present invention can be realized in various forms such as a computer program for realizing the above, a recording medium on which the program is recorded, and a data signal including the program and embodied in a carrier wave.
- a computer program for realizing the above a recording medium on which the program is recorded
- a data signal including the program and embodied in a carrier wave a data signal including the program and embodied in a carrier wave.
- the various additional elements described above can be applied.
- the present invention When the present invention is configured as a computer program or a recording medium on which the program is recorded, the present invention may be configured as an entire program for driving an image file generating apparatus and an image processing apparatus, or a unit that performs the functions of the present invention. Only the minute may be constituted.
- Recording media include flexible disks, CD-ROMs, magneto-optical disks, IC cards, ROM cartridges, punched cards, printed materials on which codes such as barcodes are printed, and internal storage devices (RAM and R).
- Various media that can be read by the computer such as a memory such as an OM) and an external storage device can be used.
- FIG. 1 is an explanatory diagram showing a schematic configuration of the image output system 10.
- FIG. 2 is an explanatory diagram showing a variation of the image output system 10.
- FIG. 3 is a block diagram showing a schematic configuration of the DS 12.
- FIG. 4 is an explanatory diagram showing functional blocks of the DSC 12.
- FIG. 5 is an explanatory diagram showing parameters of the image processing control data.
- FIG. 6 is an explanatory diagram showing the configuration of the image file 100.
- FIG. 7 is an explanatory diagram showing the hierarchical structure of the image file 100.
- FIG. 8 is an explanatory diagram showing data stored in the MakerNote data storage area 103.
- FIG. 9 is a flowchart of the generation process of the image file 100 in the first embodiment.
- FIG. 10 is an explanatory diagram showing functional blocks of the DSC 12A in the second embodiment.
- FIG. 11 is a flowchart of the image processing routine.
- FIG. 12 is a flowchart of image processing based on image processing control data. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is an explanatory diagram showing a schematic configuration of an image output system 10 as an embodiment.
- An image output system 10 of the present embodiment has a DSC 12 and a color printer 20.
- the DSC 12 corresponds to an image file generation device.
- Color printer 2
- 0 corresponds to an image processing device and an image output device.
- the DSC 12 can set various photographing conditions, photographing modes, and output control data PIM.
- the shooting conditions are image data acquisition conditions, for example, shutter speed ⁇ , Exposure and aperture.
- the shooting mode is a set of image data acquisition condition parameters set according to various shooting scenes. When the user selects the shooting mode, the parameters such as the shirt speed and the like are automatically set.
- the output control data PIM is data for controlling image processing and printing in the color printer 20, and includes image processing control data and print commands used for image processing.
- the DSC 12 performs shooting under shooting conditions set by the user, and generates an image file integrally including image data and output control data PIM.
- the generated image file is stored in the memory card MC.
- the color printer 20 has an image processing function.
- the color printer 20 inputs an image file via a memory card MC, cable, etc., and analyzes the output control data PIM.
- the color printer 20 performs image processing on the image data based on the image processing control data included in the output control data PIM, and executes printing.
- FIG. 2 is an explanatory diagram showing a variation of the image output system 10.
- the image output system 10 may include a personal computer Pc having a built-in image processing function, a server sv, and a monitor 14 as an image output device. It is also possible to connect a scanner-digital video camera as an image file generation device. Each device is connected locally or via a network by cable CV or wireless communication, and exchanges data.
- FIG. 3 is an explanatory diagram showing functional blocks of the DSC 12. Each functional block is configured by software or hardware.
- the DSC 12 is photographed by a CCD or a photomultiplier tube.
- the DSC 12 includes an optical circuit 121 having a CCD or the like, an image acquisition circuit 122 for controlling the optical circuit 121, an image processing circuit 123 for processing the acquired digital image, a CPU, a ROM, and a RAM. And a control circuit 124 for controlling.
- the DSC 12 stores the acquired image as digital data on the memory card MC.
- JPEG format is generally used as the storage format of the image data
- a TIFF format, a GIF format, a BMP format, or the like may be used.
- the DSC 12 is provided with a selection and decision button 126 for making various settings of a shooting mode and image processing control data, and a liquid crystal display 127 for displaying an image preview and various setting screens.
- the “shooting mode” is a set of parameters for image acquisition conditions set according to various shooting scenes.
- the parameters include exposure time, white balance, aperture, shutter speed, lens focal length, and so on.
- the parameters are automatically set according to the selected shooting scene.
- Image processing control data is data relating to image output such as contrast, brightness, and saturation, and is data used for image processing in the color printer 20.
- a plurality of sets of image processing control data are provided corresponding to the shooting modes. The correspondence between the shooting mode and the image processing control data will be described later by way of example.
- FIG. 4 shows the DSC 12 as an image file generating device according to the first embodiment of the present invention.
- FIG. 3 is an explanatory diagram showing functional blocks. Each functional block is configured by software or hardware.
- the image data generation unit 12a generates image data.
- the image data input section 1 2b inputs the image data.
- the image processing control data input unit 12d inputs image processing control data from the image processing control data storage unit 12c.
- the image processing control data input unit 12d also acquires image processing control data from an external storage device, for example, a hard disk of a personal computer PC, a server SV, and a recording medium, and stores the data in the image processing control data storage unit 12c. can do.
- the encryption unit 12e encrypts the image processing control data using the public key specified by the image processing device maker.
- Various methods can be applied to the encryption, but in this embodiment, a public key encryption method known in the art is applied. Since the decryption key is kept confidential to the maker of the image file generating device, confidentiality of the image processing control data can be ensured between the image file generating devices.
- the image file generation unit 12f generates an image file in which the image data and the encrypted image processing control data are stored in a predetermined format.
- FIG. 5 is an explanatory diagram showing image processing control data.
- presets corresponding to 11 types of shooting scenes are prepared in advance.
- the preset includes seven parameters: “Contrast”, “Brightness”, “Color balance”, “Saturation”, “Sharpness”, “Memory color”, and “Noise removal”. . These are the settings provided by the DSC 12 manufacturer.
- the parameters and parameter values applied to each shooting mode are stored in the control circuit 124 of the DSC 12; The user can set the shooting mode using the selection / decision button 126.
- the DSC 12 generates an image file integrally including image processing control data and image data corresponding to the set shooting mode, and stores the image file in the memory card MC.
- the image file contains not only image processing control data but also shooting conditions such as the DSC 12 gamma value, target color space, exposure time set during shooting, white balance, aperture, shutter speed, and lens focal length. It is.
- FIG. 6 is an explanatory diagram showing the configuration of the image file 100.
- the image file 100 has a file structure according to the DSC image file format standard (Exif). Exif file specifications are defined by the Japan Electronics and Information Technology Industries Association (JEITA).
- JEITA Japan Electronics and Information Technology Industries Association
- the image file 100 has an image data storage area 101 and an auxiliary information storage area 102.
- the image data storage area 101 stores image data in a JPEG format.
- the additional information storage area 102 stores the additional information in a TIFF format.
- the auxiliary information storage area 102 has a MakerNote data storage area 103.
- the MakerNote data storage area 103 is an undefined area that is open to DSC 12 manufacturers.
- the image processing control data is stored in the MakerNote temporary storage area 103.
- tags are used to identify each data, and data stored in the MakerNote data storage area 103 is used as a tag name. MakerNote is assigned and is called a MakerNote tag.
- the image file 100 is described as an Exif format file, but is not limited to this.
- the image file only needs to be associated with the image data and the image processing control data in a usable format.
- Image data and images The processing control data may be provided integrally in one file as shown in this embodiment, or may be another file in terms of format. In the latter case, it is preferable to provide at least one of the pieces of information that associates each other.
- FIG. 7 is an explanatory diagram showing a detailed hierarchical structure of the image file 100.
- FIG. 7 (a) shows the data structure of the MakerNote data storage area 103.
- FIG. 7B shows the PrintMatciiing data storage area 104 defined in the MakerNote data storage area 103. PrintMatching data corresponds to image processing control data.
- the stored data can be identified by a tag, and a PrintMatching tag is assigned to the image processing control data.
- Each tag in the MakerNote data storage area 103 is specified by a pointer with an offset value from the top address of the MakerNote data storage area 103. Name (6 bytes), followed by reserved area (2 bytes), number of local tag entries (2 bytes), and information on each oral tag offset (12 bytes). After the manufacturer name, a termination code of 00x0 indicating the character termination sequence is added.
- the PrintMatching identifier indicates that the PrintMatching parameter is stored.
- the parameter set number indicates the specified parameter set number.
- the parameter number stores a value that specifies (identifies) a parameter number that has been assigned in advance for each parameter.
- the parameter set value information stores the parameter set value of the specified parameter number.
- the parameter overnight number is, for example, information stored in a 2-byte area, and the parameter overnight setting value is information stored in a 4-byte area.
- the image processing control data can be acquired using the PrintMatching tag as an index.
- FIG. 8 is an explanatory diagram conceptually showing an example of data stored in the MakerNote data storage area 103.
- the MakerNote data storage area 103 can store image processing control data such as gamma value, color space, contrast, brightness, color balance, and saturation prepared by the manufacturer in advance.
- the parameter values with hatching in the figure are data encrypted by the encryption unit 12e.
- all the parameters of the image processing control data are encrypted, but only a part of them may be encrypted.
- FIG. 9 is a flowchart of the process of generating the image file 100 in the DSC 12.
- the user sets a shooting mode prior to shooting (step S100).
- the user sets a shooting mode by selecting one of the default shooting modes displayed on the liquid crystal display 127 by operating the selection / setting button 126.
- each parameter is automatically set based on the preset image processing control data shown in FIG. 5 (step S110).
- the control circuit 124 encrypts these parameters (step S120). At this time, an identifier is added so that the encrypted data can be identified later.
- the control circuit 124 generates image data using the set parameters in response to a photographing request, for example, pressing down a shutter button (step S130). Then, the control circuit 124 generates an image file 100 including image data and image processing control data (step S140). Finally, the control circuit 124 stores the generated image file 100 in the memory card MC.
- the image file 100 including the encrypted image processing control data can be generated. That is, the confidentiality of the image processing control data is secured.
- the image processing control data is encrypted before the image data is generated. However, the encryption may be performed after the image data is generated.
- the image processing control data is set according to the shooting mode, but the preset shown in FIG. 5 is set according to the image processing mode prepared separately from the shooting mode. Is also good.
- the image processing control data stored in the image processing control data storage unit 12 c is encrypted by the encryption unit 12 e to generate an image file.
- the image processing control data may be used.
- FIG. 10 is an explanatory diagram showing functional blocks of the DSC 12 A in the second embodiment.
- DSC12A does not include the encryption unit 12e shown in FIG. Instead, the image processing control data storage section 12 Ac stores image processing control data that has been encrypted in advance. Also in DSC 12 A, data other than image processing control data may be encrypted by providing an encryption unit.
- the generation process of the image file 100 in the DSC 12A of the second embodiment is the same as the generation process of the first embodiment except that the encryption process of step S120 in FIG. 9 is omitted. Is the same.
- the image file generation device of the second embodiment can also generate an image file including image data and encrypted image processing control data, similarly to the image file generation device of the first embodiment. it can.
- F. Image output device An outline of the color pudding 20 will be described.
- the color printer 20 is a printer capable of outputting a color image. For example, cyan (C), light cyan (LC), magenta (M), light magenta (LM), yellow one (Y), dark yellow ( DY)
- This is an ink jet printing method that forms an image by ejecting seven color inks of black ( ⁇ ) onto a print medium to form a dot pattern.
- Various printing media such as an electrophotographic printing machine that forms an image by transferring and fixing a color toner on a print medium may be applied.
- the control circuit 22 of the color printer 20 reads the image file 100 from the memory card MC inserted in the memory card slot 24, and decodes and analyzes the image processing control data using the decoding key. Performs image processing based on the analyzed image processing control data and executes printing.
- FIG. 11 is a flowchart of the image output process. This is the processing executed by the CPU in the control circuit 22 of the color printer 20.
- the CPU reads the image file 100 from the memory card MC and temporarily stores the image file 100 in the RAM (step S200).
- the header of the read image file 100 is analyzed (step S210), and the presence or absence of image processing control is determined (step S220).
- the CPU acquires the parameter values held in advance by the color printer 20 from the ROM and performs image processing (step S280).
- the CPU acquires the image processing control data (step S230). Then, it is determined whether or not the image processing control data has been encrypted (step S240). For example, an identifier indicating whether encryption is performed Can be determined by If it is encrypted, it is decrypted using the decryption key (step S250), and image processing is performed based on the image processing control data (step S270). If decoding is not possible, the parameter value stored in the color printer 20 in advance is acquired from the ROM, and normal image processing is executed (step S280). If the image processing control data has not been encrypted in step S240, image processing based on the image processing control data is executed (step S270).
- FIG. 12 is a flowchart of the image processing control in step S270.
- the process using the image processing control data is indicated by a double line.
- the CPU extracts image data from the image file 100 (step S300).
- DSC 12 saves image data as a JPEG format file as described above, and in the JPEG file, the image data is stored using the YC b C r color space to increase the compression ratio. .
- the CPU executes a first matrix operation for converting image data based on the YCbCr color space into image data based on the sRGB color space (step S3110).
- the CPU executes gamma correction and a second matrix operation on the image data based on the s RGB color space thus obtained (step S320).
- the CPU obtains the gamma value of the DSC 12 from the image processing control data, and performs gamma conversion processing on the image data using the obtained gamma value.
- the second matrix operation is an operation for converting the s RGB color space to the XYZ color space. Image used in this embodiment Since the image file 100 can include the color space information at the time of generating the image data, if the image file 100 includes the color space information, the CPU executes the second matrix operation when executing the second matrix operation.
- a matrix operation is performed using a matrix corresponding to the color space at the time of image data generation.
- the color space of the image data obtained after the execution of the second matrix operation is the XYZ color space.
- the color space used for image processing in a printer or a computer is fixed to sRGB, and the color space of DSC 12 cannot be effectively used.
- the matrix used for the second matrix calculation is changed according to the color space information included in the image file 100. Therefore, desired color reproduction can be realized by effectively utilizing the color space of the DSC 12.
- the CPU performs a third matrix operation and inverse gamma correction to convert the image data from the XYZ color space to the wRGB color space in order to perform image quality adjustment based on the image processing control data.
- the wRG B color space is a color space arbitrarily set in a wider range than the s RGB color space.
- the CPU acquires the default gamma value of the color printer 20 from the ROM, and performs inverse gamma conversion processing on the image data using the reciprocal of the acquired gamma value.
- the CPU executes the matrix operation using a matrix corresponding to the conversion from the ROM to the wRGB color space.
- the color space of the image data obtained after executing the third matrix operation is the wRGB color space.
- the wRGB color space is a color space wider than the s RGB color space, and corresponds to a color space that can be generated by the DSC 12.
- the CPU executes an automatic image quality adjustment process (step S340).
- the image quality automatic adjustment processing in this embodiment, the image quality The parameter values of the image processing control data are acquired, and the image quality is automatically adjusted using these values.
- the CPU executes wRGB color conversion processing and halftone processing for printing (step S350).
- the CPU refers to the conversion table for conversion to the CM YK color space corresponding to the wRGB color space stored in the ROM, and converts the color space of the image data to wRGB. Change from color space to CMYK color space. That is, image data consisting of R, G, and B gradation values is used in the color printer 20. For example, C-M, Y, K, LC, LM, and DY gradation data of seven colors are used. Convert.
- the color-converted image data is received, and the gradation number conversion process is performed.
- the image data after the color conversion is represented as data having a 256 gradation width for each color.
- Halftoning can be performed by, for example, an error diffusion method, an organized dither method, or the like.
- the CPU executes a resolution conversion process for adjusting the resolution of the image data to the print resolution prior to the color conversion process. Further, the CPU executes an interface process for rearranging the image data after the halftone process in an order to be transferred to the color printer 20.
- the color printer 20 of the present embodiment it is possible to perform desired image processing on the image data of the image file 100 generated by the DSC described above and output the image.
- the image quality can be automatically adjusted without having to adjust the image quality on the photo print application or the print driver.
- the image quality adjustment processing is automatically executed.
- the image quality automatic adjustment button provided on the operation panel of the color printer 20 is used.
- the image quality adjustment processing may be instructed.
- all or a part of the image processing may be executed on a computer or on a server SV via a network.
- Processing on the personal computer PC is realized by providing the image processing function described in Fig. 15 to an image data processing application, such as a retouching application or a print driver.
- the image file 100 generated by the DSC 12 is provided to the computer via a cable or a memory card MC.
- the application is started by the user's operation, and the reading of the image file 100, the analysis of the image processing control, the conversion of the image, and the adjustment are executed.
- the application may be automatically started upon detecting the insertion of the memory card MC or the insertion of the cable, and the above-described processing may be performed.
- Image processing on the server SV is realized by installing an application for executing the image processing function shown in FIG. 12 on the server SV.
- the server SV receives the image file 100, executes the image processing specified by the image processing control data, and transmits the processed image file 100 or the image data to the personal computer PC of the transmission source or the output destination.
- Color pudding may be sent to 20.
- the DSC 12 having the wireless communication function transmits the global IP address and the image file of the color printer 20 to the server SV, and the server SV finishes the image processing for this global IP address.
- a parameter value for executing the image quality automatic adjustment may be selectable.
- a color selection button 20 may be provided with a parameter selection button, or a shooting mode parameter selection button in which a predetermined parameter combination is performed according to the subject.
- a parameter for executing the automatic image quality adjustment on a user interface of a printer driver or a retouch application may be selected.
- the color printer 20 is used as an output device, but a display device such as a CRT, an LCD, or a projector can be used as the output device.
- a CRT or the like in which an image processing program for executing the image processing described with reference to FIGS. 14 and 15 is executed by the display device as an output device functions as a display device of the computer.
- the computer executes the image processing program.
- the finally output image data has not the CMYK color space but the RGB color space.
- the print result via the color printer 20 can reflect the user's preference at the time of generating the image data
- the display result on a display device such as a CRT or the like at the time of generating the image Can be reflected.
- the image file 100 used in the present embodiment may be used as an image file when a predetermined frame of digital television broadcasting is captured. Since image data in digital television broadcasting is also data based on the YCbCr color space, the present invention can be applied similarly to the case of DSC12. Specifically, a scene instructed by the capture is captured as image data, image processing control data corresponding to the captured image data is set, and an image file 100 including image data and image processing control data is set. Generate As a result, at the time of outputting the image data overnight, it is possible to output an image with high saturation, similarly to the color in digital television broadcasting.
- the image file generation device As described above, the image file generation device, the image output device, Although the image output system and the program have been described, the embodiments of the present invention described above are intended to facilitate understanding of the present invention, and do not limit the present invention. The present invention can be modified and improved without departing from the spirit and scope of the claims, and it is needless to say that the present invention includes equivalents thereof.
- parameters such as gamma value, color space, brightness, and sharpness are used as the image processing control data.
- which parameter is used as the image processing control data is an arbitrary decision.
- the values of the parameters illustrated in the table of FIG. 8 are merely examples, and the invention according to the present application is not limited by the values.
- the values of the matrix in the image processing of FIG. 12 are not specifically illustrated, but needless to say, they can be appropriately changed according to the target color space or the color space available in the color printer 20.
- each element of the matrix is one of the image processing control data that affects the output image, it may be encrypted.
- the encrypting unit 12 e of the DSC 12 encrypts the image processing control data.
- the image file generating apparatus of the present invention provides a part of the data included in the image file. Since the image data is encrypted, the image data and other attached data such as shooting conditions may be encrypted. For example, if image data is encrypted for an image file including a thumbnail, the thumbnail can be displayed on the image display device, but the original image cannot be displayed without decoding.
- the public encryption method is applied to the encryption.
- another encryption method for example, a secret encryption method may be applied.
- the image processing apparatus that processes the generated image file generates a decryption key corresponding to an encryption key prepared for each maker or model of the image file generation apparatus. What is necessary is just to hold
- a scanner a digital video camera, or the like may be used.
- the specification of the capture data of the image file 100 may be executed on the computer PC, or the setting information is allocated on the scanner in advance for the information setting.
- a preset button, a display screen for arbitrary setting, and a setting button may be provided so that the scanner can be executed alone.
- an Exif format file has been described as a specific example of the image file 100, but the image file format according to the present invention is not limited to this.
- any image file containing image data generated by the image data generating device and image processing control data describing output conditions of the image data may be used.
- the image processing conditions are immediately executed based on the specified image processing conditions without having to set the image processing conditions for each printing in the output device, and the image data generated by the image file generation device is generated.
- Image quality can be automatically adjusted appropriately and output from the output device.
- the present invention can be used for generating an image file in which image data and auxiliary data are associated with each other.
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Image Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Studio Devices (AREA)
- Facsimile Image Signal Circuits (AREA)
Description
Claims
Priority Applications (2)
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| EP02711395A EP1367826A4 (en) | 2001-02-09 | 2002-02-07 | GENERATING AN IMAGE FILE |
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| JP2001034522 | 2001-02-09 | ||
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| JP2001-185190 | 2001-06-19 |
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| EP (1) | EP1367826A4 (ja) |
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| US7916202B2 (en) | 2003-02-27 | 2011-03-29 | Seiko Epson Corporation | Image reproduction using a specific color space |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7916202B2 (en) | 2003-02-27 | 2011-03-29 | Seiko Epson Corporation | Image reproduction using a specific color space |
| US9538046B2 (en) | 2003-02-27 | 2017-01-03 | Seiko Epson Corporation | Image reproduction using a particular color space |
| US7755639B2 (en) | 2004-08-27 | 2010-07-13 | Seiko Epson Corporation | Image reproduction using a particular color space |
| US8207985B2 (en) | 2004-08-27 | 2012-06-26 | Seiko Epson Corporation | Image reproduction using a particular color space |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1367826A1 (en) | 2003-12-03 |
| JP4366029B2 (ja) | 2009-11-18 |
| EP1367826A4 (en) | 2005-10-12 |
| US20040066533A1 (en) | 2004-04-08 |
| US7350086B2 (en) | 2008-03-25 |
| JP2002314935A (ja) | 2002-10-25 |
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