WO2003077534A1 - Processeur d'image et dispositif d'impression d'image - Google Patents
Processeur d'image et dispositif d'impression d'image Download PDFInfo
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- WO2003077534A1 WO2003077534A1 PCT/JP2003/001423 JP0301423W WO03077534A1 WO 2003077534 A1 WO2003077534 A1 WO 2003077534A1 JP 0301423 W JP0301423 W JP 0301423W WO 03077534 A1 WO03077534 A1 WO 03077534A1
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- Prior art keywords
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- format
- color space
- image data
- data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4117—Peripherals receiving signals from specially adapted client devices for generating hard copies of the content, e.g. printer, electronic paper
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/18—Conditioning data for presenting it to the physical printing elements
- G06K15/1801—Input data handling means
- G06K15/1803—Receiving particular commands
- G06K15/1806—Receiving job control commands
- G06K15/1809—Receiving job control commands relating to the printing process
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/18—Conditioning data for presenting it to the physical printing elements
- G06K15/1801—Input data handling means
- G06K15/181—Receiving print data characterized by its formatting, e.g. particular page description languages
- G06K15/1815—Receiving print data in mixed format
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/18—Conditioning data for presenting it to the physical printing elements
- G06K15/1801—Input data handling means
- G06K15/1822—Analysing the received data before processing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
- H04N1/60—Colour correction or control
- H04N1/603—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4184—External card to be used in combination with the client device, e.g. for conditional access providing storage capabilities, e.g. memory stick
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8146—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics
- H04N21/8153—Monomedia components thereof involving graphical data, e.g. 3D object, 2D graphics comprising still images, e.g. texture, background image
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
- H04N2201/3243—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of type information, e.g. handwritten or text document
Definitions
- the present invention relates to an image printing apparatus that performs printing based on image data, and particularly to image data generated by an electronic imaging device such as a digital still camera or image data displayed on a digital television or the like or via a network.
- the present invention relates to an image processing device, an image printing device, and a method for performing printing using distributed image data.
- the subject image formed by the photographing lens is photoelectrically converted into an electric signal using an image sensor such as a CCD, and the electric signal is subjected to compression processing using the Joint Photographic Experts Group (JPEG) method.
- JPEG Joint Photographic Experts Group
- a device for recording the image data on a recording medium is widely used.
- a digital still camera also referred to as an electronic still camera
- a card medium such as a PC force-dosed media and a built-in fixed memory.
- DSC digital still camera
- AV devices such as TVs and DVD recorders have a viewer function that can view image data shot with such a DSC, and a browser function that displays information data such as data broadcasts.
- the one equipped with it is commercialized.
- the development of a printer for printing these contents from such AV equipment is also being studied.
- Image data compressed according to the JPEG standard generated by conventional DSCs etc. I, usually Exif (Exchangeable Image File Format) standard (with accompanying header information. This header information is added. It describes the type of DSC used, the shooting conditions at the time of shooting, etc.
- the reversible uncompressed recording method for example, TIFF format).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-137718
- expansion also referred to as decompression or decompression
- color correction etc.
- the content to be printed is the content described in HTML (Hyper Text Markup Language) format for WWW (World Wide Web), and the content described in BML (Broadcast Markup Language) format for digital broadcasting.
- the contents also include image data in JPEG format.
- the image data included in these contents is not limited to image data created from DSC or the like.
- image data read by a scanner or the like there are image data read by a scanner or the like, and image data converted from another image format. Even though these image data are of the same JPEG format, the header information of Exif is not added. Then, in those contents, JPEG images having different data sources may be mixed in the same content.
- the image data used in DSCs is generally created based on the color space "s RG Bj", but some Some create image data in a color space called “IQ” or “adobe RGB”.
- IQ color space
- adobe RGB color space
- printers usually convert to the CMYK space and print, so color space conversion is required to convert the color space of the input image data to the color space for printing.
- the present invention has been made in view of the above problems, and prints each image satisfactorily even when a plurality of images having different formats and the like are mixed in one content to be printed.
- the purpose of the present invention is to provide an image printing device capable of performing such operations.
- a second object of the present invention is to provide an image printing apparatus or the like that can perform good printing without a user giving detailed instructions. Disclosure of the invention
- an image processing apparatus is an image processing apparatus that performs image processing on predetermined image data, and includes at least one image processing apparatus.
- Image obtaining means for obtaining the above image data
- format determining means for determining, for each of the obtained image data, a format defining a storage format of the image data, and a format determining means for determining the format based on the determined format.
- Image processing means for performing predetermined image processing on the image data.
- an image printing apparatus is an image printing apparatus that performs printing based on predetermined image data, and an image acquisition unit that acquires at least one or more image data.
- Format determining means for determining the format of each of the acquired image data, and image processing for performing predetermined image processing on the image data based on the determined format.
- an image processing apparatus is an image processing apparatus that performs image processing on predetermined image data and outputs the processed image data to a specific apparatus.
- Image acquisition means for acquiring information indicating a space and at least one or more image data defined in accordance with the color space; color space identification means for identifying a color space related to the specific device; Color space conversion that converts the image data thus specified so as to be defined according to the specified color space.
- Replacement means for converting the image data thus specified so as to be defined according to the specified color space.
- the color space of each image included in the print content is reliably transmitted to the printer via the color space information, so that the color space conversion can be performed reliably. Even if the color space of the image included in the print content is various, image processing for obtaining a printed matter in a color space close to the color space intended by the content provider can be performed. That is, by using the image printing apparatus according to the present invention, the color space of each image included in the print content is reliably transmitted to the printer via the color space information. Since it is possible to perform the conversion reliably, even if the color space of the image included in the print content is various, a printed material in a color space close to the color space intended by the content provider can be obtained.
- an image printing apparatus is an image printing apparatus that performs printing based on predetermined image data, and includes information indicating a color space.
- Image acquisition means for acquiring at least one or more image data defined in accordance with the color space; color space identification means for identifying a color space relating to the image printing apparatus; and the acquired image Day Color space conversion means for converting the image data into a definition according to the specified color space, and printing means for printing on a predetermined print medium based on the image data subjected to the color space conversion.
- the color space of each image included in the print content is reliably transmitted to the printer via the color space information, so that the color space conversion can be performed reliably.
- the color space of the image included in the print content is various, it is possible to obtain a printed matter in a color space close to the color space intended by the content provider.
- an image processing apparatus performs image processing on predetermined image data and outputs the image data to a specific apparatus.
- Image acquisition means for acquiring at least one or more pieces of image data and information indicating a device that has generated the image data, and the image based on information indicating a device that has generated the image data.
- a color space estimating unit for estimating a color space related to data
- a color space specifying unit for specifying a color space related to the specific device, and a constant according to the estimated color space.
- Color space conversion means for converting the definition into a definition according to the specified color space.
- the color space in the environment where the print content is created is determined based on the information indicating where the image object was generated. Since the color space is estimated and the color space is converted based on the estimated color space, image processing for obtaining a printed material in a color space close to the color space intended by the print content provider becomes possible. That is, by using the image printing apparatus according to the present invention, even if the color space of the image included in the obtained print content is not known, the image object is generated based on information indicating where the image object is generated. Since the color space in the environment in which the print content is created is estimated, and the color space is converted based on the estimated color space, the printed matter in a color space close to the color space intended by the print content provider is estimated. Can be obtained.
- an image printing apparatus is an image printing apparatus that performs printing based on predetermined image data, and generates at least one or more image data and the image data.
- Image acquisition means for acquiring information representing a device that has performed the image data
- color space estimation means for estimating a color space related to the image data based on the information representing the device that has generated the image data
- a color space specifying unit that specifies the color space
- a color space conversion that converts the acquired image data from a definition according to the estimated color space to a definition according to the specified color space.
- Means and the color space A printing means for printing on a predetermined print medium based on the converted image data.
- the color space in the environment where the print content is created is determined based on the information indicating where the image object was generated. Since the color space is converted based on the estimated color space, it is possible to obtain a printed matter in a color space close to the color space intended by the provider of the print content.
- the present invention is realized as an image processing method or an image printing method using the characteristic constituent means of the image processing apparatus or the image printing apparatus as steps, It can also be realized as a program that includes all of.
- the program can be stored not only in the ROM or the like provided in the device, but also can be distributed via a recording medium such as a CD-ROM or a transmission medium such as a communication network.
- FIG. 1 is a block diagram showing a functional configuration of a printer according to the first embodiment.
- FIG. 2 is an example of a schematic diagram showing the structure of a JPEG image file.
- FIG. 3 shows an example of the data structure of a JPEG image file conforming to JIFF.
- FIG. 4 shows an example of the data structure of a JPEG image file conforming to Exif.
- Figure 5 shows an example of the data structure of a segment starting with the APP1 marker.
- Fig. 6 ( a ) is an example of the first file of print content described in the XHTML-Print format.
- FIG. 6B is an example of an image file linked to the file of FIG. 6A.
- FIG. 6 (c) is an example of an image file linked to the file of FIG. 6 (a).
- FIG. 7 is a conceptual diagram showing the structure of a print content file described in the XHTML-Print format input to the printer of FIG.
- FIG. 8 is a block diagram showing the internal configuration of the printer according to the second embodiment.
- FIG. 9 is a conceptual diagram showing the structure of a print content file described in the XHTML-Print format input to the printer of FIG.
- FIG. 10 is a block diagram illustrating a functional configuration of a printer according to the second embodiment.
- FIG. 11A shows an example of the configuration of the print content according to the second embodiment.
- FIG. 11 (b) is an example of an image file linked to the file of FIG. 11 (a).
- FIG. 12 is an example of a case where color space information is described in a portion other than the header portion.
- FIG. 13 is a block diagram showing a functional configuration of a printer according to the third embodiment.
- FIG. 14 is an example of a table used for estimating the color space of the acquired print content.
- FIG. 15 (a) is a diagram illustrating an example of a configuration of print content according to the third embodiment.
- FIG. 15 (b) is an example of an image file linked to the file of FIG. 15 (a).
- FIG. 1 is a block diagram showing a functional configuration of printer 100 in the present embodiment.
- the printer 100 performs appropriate image processing based on the format of the image data (for example, a JPEG image) included in the print content received from the host device 100, and executes the image data after the image processing.
- This is a device that performs printing using.
- “print content” refers to the content to be printed. It is assumed that the print content is described in a language system called XHTML-Print, which is one of the description languages of the XML (extensible Markup Language) system.
- the printer 100 includes a description interpretation unit 101, a print content buffer 102, an image data acquisition unit 103, an image determination unit 104, and an image development unit. 105, an image processing determining unit 106, an image processing unit 107, a rendering unit 108, a printing unit 109, and an object character string processing unit 110 are provided.
- the description interpretation unit 101 includes a CPU, a ROM, and the like, and controls the entire printer 100. Further, the description interpretation unit 101 stores print content received from the host device 10 (for example, digital TV or STB (Set Top Box)) in the print content buffer 102.
- the host device 10 for example, digital TV or STB (Set Top Box)
- the description interpretation unit 101 interprets the contents of the image data file and the CSS (Cascading Style Sheet) file described in the print content, and lays out each object according to the content. Then, layout information (including the link information of the file) representing the result is created and notified to the image data acquisition unit 103.
- the “object” refers to a group of data such as graphs and figures displayed on the application.
- “Layout J” refers to determining where and how large each object should be printed during printing.
- the description interpreter 101 By actually reading the size of each object, the size of each object is determined.
- the print content buffer 102 temporarily stores the print content according to the instruction of the description interpretation unit 101. In the print content buffer 102, all of these contents may be buffered in advance, or only the necessary data of each content may be buffered when necessary.
- the image data acquisition unit 103 sends a print content buffer 102 to the print content buffer 102 based on the link information included in the layout information notified from the description interpretation unit 101 described above.
- the corresponding image file is taken out of the printed content and transmitted to the image discriminating unit 104.
- the image file at the link destination exists in an external DB 119 other than the print content buffer 102, but in this case, the image data acquisition unit 103 stores the image file in the It is obtained from the external DB 119 and transmitted to the image discriminator 104.
- the image determination unit 104 determines the type of the image file received from the image data acquisition unit 103, and notifies the image development unit 105 of the result.
- a specific determination method in this case there is a method of determining by the extension of the image file, a method of determining by the header information of the image file, or a method of determining from the data sequence of the image file itself.
- the extension of JPEG image files encoded based on the JPEG standard which is one of the lossy encoding (mouth-encoding) methods, is r.JPGj or ". JPEGJ (each extension). Child is lowercase Including the case.
- GIF GIF files that are encoded using the GIF method
- lossless encoding lossless encoding
- the image determining unit 104 determines the type of the image file based on these extensions. Further, even when the description interpreting unit 101 cannot determine the size of the object, the image discriminating unit 104 determines the size of each file described in the header of each image file. The size of the object is determined based on.
- JPEG image file As an example.
- the following JPEG image files are all referred to as "baseline JPEGGJ".
- JPEG Joint Photographic Experts Group
- JFIF JPEG File Interchange Format
- Exif Exchangeable image file format for Digital Still Camera
- the image decompression unit 105 extracts the compressed YCC image data from the JPEG image file and decompresses (decompresses) the bitmap data based on the discrimination result notified from the image discrimination unit 104.
- RGB image data can be obtained by inverting YCC image data. Further, the image developing unit 105 stores the generated bitmap data in the storage unit 111.
- the image processing determination unit 106 determines an image processing method to be applied to the bitmap data expanded in the image expansion unit 105.
- An example of the image processing method in this case will be described. It is assumed that the developed bitmap data is read from the storage unit 111 and subjected to image processing (for example, color correction processing) on the bitmap data.
- JPEG image data recorded in DSC is generally recorded in accordance with the Exif format. In this case, in the Exif format, shooting parameters such as the type of CCD used in the DSC (for example, complementary color system or primary color system), the type of light source such as whether or not strobe light is emitted, and the exposure time are used. May be recorded.
- the image processing determining unit 106 issues an instruction to the image processing unit 107 to perform image processing using preset default parameters.
- the image processing unit 107 performs image processing on the bitmap data based on an instruction from the image processing determination unit 106.
- JPEG is a method designed to compress full-color images or grayscale images of nature (real scenery, etc.), and is used for processing nature-related artworks such as photographs and similar materials. This is a suitable compression method. Therefore, the image processing assumes these images.
- the object / character string processing unit 110 If it is determined that the file is not a JPEG image file (these files are graphic objects such as lines and rectangles or objects such as animated images and character strings). Converts to bitmap data separately from a series of processing for JPEG image files.
- the rendering unit 108 is a two-dimensional image converted into bitmap data in the object / character string processing unit 110, and the bit developed by the image development unit 105. Map data and image processing unit 1
- the bitmap data processed in step 07 is synthesized and converted into image data expressed in the CMYK color space for printing. Some printers print RGB data as is, but in this case, the CMYK conversion is not performed.
- the printing unit 109 prints on a medium such as paper using print data converted by the rendering unit such as CMYK image data.
- FIG. 2 is an example of a schematic diagram showing the structure of a JPEG image file.
- the JPEG image file has a predetermined SOI (Start Of
- the boundary of one file can be identified by a 1 mage) marker 501 and a predetermined end of image (EOI) marker 1502 indicating the end position of the file.
- the code of the marker in the JPEG standard is “0xFF” in hexadecimal notation (hereinafter, the hexadecimal number is expressed as “Ox”), followed by a 1-byte numerical value. It consists of a total of 2 bytes.
- the SOI marker 501 is represented by "0xFFD8J”
- the EOI marker 502 is represented by "0xFFD9".
- a marker 503 indicating the type of encryption or a marker indicating an encryption parameter such as a quantization table is used.
- the interior of these markers consists of a 2-byte code 510, the size 5 11 of the code represented by 2 bytes, and the data 5-12 of the marker. It is configured.
- the value of the size of marker 1 5 1 1 is the sum of the number of bytes of data 5 1 of marker 1 and the number of bytes of size 5 1 1 of marker 1.
- the SOFn marker 506 is inserted at the beginning of the frame and specifies an encoding algorithm and the like.
- frame represents one layer of image information. Since the commonly used image data of JPEG (baseline JPEG) is data of one frame per image, one JPEG image file has one frame header.
- FIG. 3 is an example of the data structure of a JPEG image file conforming to JIFF, created by converting the data format on a personal computer or the like.
- an APPO marker 501 (OxFFEO) appears after the SOI marker 501.
- the data part 5 21 contains 'JFIF' and data 5 2 1 starting with character codes (0x41, 0x46, 0x49, Ox46, 0x00). Is recorded.
- a marker 522 and the like which have required parameters such as a quantization table and a Huffman table used for decoding as data, are described, and follow the frame data section 523.
- identification can be performed based on the presence or absence of the APPO marker 1502 following the SOI marker 501.
- Fig. 4 shows an example of the data structure of an Exif-compliant JPEG image file created by DSC or the like.
- the APP1 marker 530 (0xFFE1) appears after the SOI marker 501.
- This segment starting with APP 1 It has a data structure as shown in FIG.
- the DATA 531 is 'Exif' and begins with the character code (0x45, 0x78, 0x69, 0x66, 0x00, 0x00)
- Data 5 32 is initially recorded.
- the image discriminating unit 104 reads the marker following the SOI marker 501 of the input JPEG image file and the head data of the marker, and determines whether it is JFIF-compliant or Exif-compliant. Is determined.
- this printer 100 can be used to receive digital broadcasts from devices such as STB, etc., in Ml_ (Markup Language) languages such as BML (Broadcast Markup Language) and XHTML-Print.
- Ml_ Markup Language
- BML Broadcast Markup Language
- XHTML-Print XHTML-Print
- the first file (file name is rhonbun.xmlj) shown in Fig. 6 (a) is described in the XHTML-Print format in which each component is described as an object, and each object is large. Parameters such as, color, relative position, and absolute position are specified. These parameters may be defined by a file representing style attributes called Cascading Style Sheets (CSS).
- CSS Cascading Style Sheets
- each object is represented in a link format and may exist as a separate file.
- FIGS. 6 (b) and (c) show two image files 610 linked to the file of FIG. 6 (a) (the file name is “exif.ip”). g J) and 620 (file name is ⁇ jfif .jpg J).
- FIG. 7 is a flowchart showing the flow of processing of the printer 100.
- the description interpretation unit 101 receives print content described in the XHTML-Print format from the host device 10 (for example, STB) and stores the print content in the print content buffer 102 ( S201).
- the description interpreting unit 101 interprets the description content of “Honbun.xml”, which is the first file of the print content, and specifies a linked image file or the like.
- the portion between the tag ⁇ p> 601 and the tag ⁇ / p> 602 is a character string, the fact that it is a character string Notify the object / character string processing unit 110.
- the image data acquisition unit 103 acquires the linked image file from the print content buffer 102 or the external DB 119 (S203). The acquired image file is transmitted to the image discriminating unit 104.
- the image determining unit 104 determines the type of the acquired image file (S204).
- the above two image files can be identified as JPEG image files based on their extensions. Furthermore, in the case of JPEG image files, as described above, by examining the data of the application software that follows the SOI data, it is determined whether the data is JFIF-compliant data or Exif-compliant data. Determine. If the delimiter following the SOI marker is the APPI marker and the data contains the string 'EX if' (S204: Exif), the JPEG image file is E It is determined that the image data conforms to the xif standard, and is sent from the image expansion unit 105 to the image processing determination unit 106, where the device information and shooting information etc.
- the JPEG image file is determined to be a file conforming to the JFIF standard, and the image is opened.
- the processing directly proceeds from the section 105 to the rendering section 108.
- the example of (c) in Fig. 6 corresponds to this case.
- the rendering unit 108 combines these data (S207) and performs image processing for each object (S205, S206).
- the printing unit 109 prints on a printing medium such as paper, as shown in FIG. 9 (S208).
- the printer can be configured to select an image processing method suitable for a graphic image.
- FIG. 8 shows the details of the “determination of image processing method (S 205)” process in FIG. It is a detailed flowchart.
- the image processing determination unit 106 reads out a parameter (hereinafter, referred to as “processing parameter”) for determining the default image processing stored therein (S301), and The device information and the like described in the image data received from the image developing unit 105 are read (S302).
- processing parameter a parameter for determining the default image processing stored therein
- the image processing determination unit 106 compares the default device information and the like with the read device information and the like (S304), and if there is a difference (S305: Yes). Then, the value of the processing parameter is changed, and the processing parameter is notified to the image processing unit 107. The above processing is repeated for all the device information and the like (S304 to S307).
- an image printing apparatus capable of performing appropriate image processing for printing based on the format of image data included in received print content Can be realized.
- the printer that performs appropriate image processing based on the format of the image data included in the received print content and prints the image after the image processing has been described.
- a printer that receives information indicating the color space of an image related to image data (hereinafter referred to as “color space information”) and performs image processing and printing of an image after image processing based on the color space information will be described. I do.
- color space refers to a three-dimensional (for example, RGB) or four-dimensional (for example, CMYK) coordinate system for representing colors (also referred to as a "color system”). Color is represented as a point in a subspace of the color space coordinate system.
- ⁇ NTSC color space ie, YIQ color space
- ⁇ s RGB color space for DSC. It is used.
- a dobe RGB color space or ⁇ A color space such as "pp I e RGB color space” is also used.
- the range of colors that can be expressed is slightly different. In the JPEG standard, there is no color space specification, so you can imagine s RGB when shooting with DSC, but in any other color space you can imagine a JPEG file that does not. It is difficult to judge whether the data has been obtained.
- FIG. 10 is a block diagram showing a functional configuration of printer 200 in the present embodiment. Also in this embodiment, as in the first embodiment, it is assumed that printing is performed using image data described in the XHTIHL-Print format for printing content.
- the printer 200 includes a description interpreting unit 121, a print content buffer 102, an image data obtaining unit 103, a decoding unit 126, and an image processing unit 122. 2. It has a color space changing unit 123, a rendering unit 124, and a printing unit 109.
- a description interpreting unit 121 the print content buffer 102
- an image data obtaining unit 103 the image data obtaining unit 103
- a decoding unit 126 a decoding unit 126
- an image processing unit 122 includes a description of the same configuration as in the first embodiment. 2. It has a color space changing unit 123, a rendering unit 124, and a printing unit 109.
- the description interpretation unit 121 includes a CPU, a ROM, and the like, and controls the entire printer 200. Further, the description interpretation unit 121 stores the print content received from the host device 10 in the print content buffer 102 and includes the print content included in the print content (or the link). The color space of the image is identified, and the color space information is notified to the color space changing unit 123. Here, the description interpretation unit 122 identifies the color space based on the content described in the image file included in the print content. In addition, the description interpreting unit 121 includes an image data obtaining unit 103 and a decoding unit when there is no image data to be linked, or when the image data is not compressed and decoding is unnecessary. Control is performed so as to omit 1 2 6 and the image processing section 1 2 2.
- the decoding unit 126 is configured to store the image acquired by the image data acquiring unit 103. Decode the object to generate bitmap data. If the image data is not encoded, the processing in the decoding unit 126 is omitted.
- the image processing unit 122 performs image processing on the bitmap data output from the decoding unit 126. For example, in the case of encoding by JPEG, block distortion may occur, and processing for reducing the distortion is performed.
- the color space changing unit 123 converts the obtained color space of the print content to the optimal bitmap data for the bitmap data that has been subjected to image processing based on the already detected color space information. Change to color space.
- a color space in an ink jet printer, a laser printer, or the like is a “CMYK color space”.
- FIG. 11 is a diagram showing an example of the configuration of print content used in the present embodiment.
- the file 710 described in the XHTML-Print format shown in FIG. 11A is the first file of the print content, and its file name is “Honbun.xml”.
- FIG. 1 1 (a) between the Taguku head> 7 1 1 and Tagukuno head> 7 1 2, the image data file "S amp I e. Color space jpg J 7 1 4 is "It is defined that it is NTSCJ 713.
- FIG. 11 (b) is a diagram schematically showing an image represented by the image data linked to FIG. 11 (a), and its file name is isamplle.jpgj.
- the printer in the present embodiment the color space of each image data included in the content is reliably transmitted to the printer via the color space information, so that the color space can be surely converted. It is possible to obtain printed matter in a color space that is close to the color space intended by the content provider, even if the color space is diverse.
- the color space conversion is performed after the image processing is performed, but the same effect can be obtained even if the order is reversed.
- FIG. 12 is an example of a case where color space information is described in a portion other than the header portion.
- XHTML- Pr i nt to Po di portion of the image file defined in the format the image data file r S amp I e. Jpg "7 3 between the third color space is" NTSC "7 3 4 is defined.
- the processing can be switched by recognizing the color space of the target image.
- color space information can be expressed as attributes of the image object, even if there are a plurality of image objects having different color spaces in one print content, independent image processing (for each object) can be performed. For example, color correction processing) can be performed.
- FIG. 13 is a block diagram illustrating a functional configuration of printer 300 according to the present embodiment.
- a printer that prints image data described in the XHTML-Print format is assumed, as in the first and second embodiments.
- the printer 300 includes a description interpretation unit 13 ′ 1, a print content buffer 102, an image data acquisition unit 103, a decoding unit 126, and an image processing unit 122. 2, a color space changing unit 123, a rendering unit 124, a printing unit 109 and a color space estimating unit 130 are provided.
- description of the same configuration as in the first embodiment or the second embodiment will be simplified, and different configurations will be mainly described.
- the description interpreter 1331 includes a CPU, a ROM, and the like, and controls the entire printer 300. Further, the description unit 1331 detects information (also referred to as “source provider information”) indicating the environment in which the print content was generated, and uses the detected information as a color space estimation unit 130. Send to
- the color space estimating unit 130 estimates the color space in the environment where the image data is generated in accordance with a predetermined rule (for example, a correspondence table ⁇ flow chart) based on the information received from the description interpreting unit 131. I do. For example, in the case of DSC, if the file conforms to Exif, the color space can be determined to be sRB. If the data is DSC but the data is not encoded, the color space may be NTSC. Furthermore, when data is captured on a television or the like, the color space can be estimated to be NTSC. As described above, the color space of the image can be estimated by notifying the information indicating the environment in which the data is generated.
- a predetermined rule for example, a correspondence table ⁇ flow chart
- FIG. 14 is an example of a table used when estimating the color space of the print content acquired by the color space estimating unit 130. As shown in Fig. 14, image data was generated in the image file included in the print content. An environment (image generation environment) 801 and a color space name 802 estimated from the image generation environment 801 are defined in association with each other.
- the image data acquisition unit 103 receives the image object transmitted from the description interpretation unit 1331. If it is encoded, it is decoded by the decoding unit 126 to generate bitmap data. If the image data is not encoded, this processing is omitted.
- the output bitmap data is subjected to appropriate image processing by the image processing unit 122. For example, in the case of encoding by J PEG, block mitigation may occur, and therefore, reduction processing is performed. A detailed description of the processing here is omitted.
- the color space changing unit 123 changes the color space of the content to a color space optimal for the printer by referring to the color space information already detected. In inkjet printers and laser printers, processing is often performed in CMYK space.
- the data subjected to the color space conversion is converted into printer output data by a rendering unit 124 and printed from the printing unit 109.
- FIG. 15 is a diagram showing an example of the configuration of the print content used in the present embodiment.
- the file 810 described in the XHTML-Print format shown in Fig. 15 (a) is the first file of the print content, and its file name is "Honbun.xmIj.” 5 as (a), in between Taguku head> 8 1 1 and Tagukuno head> 8 1 2, the image data file r sam ple. jpg J 8 1 2 is generated environment gamma DSCJ 8 1 1 is defined.
- FIG. 15 (b) is a diagram schematically showing an image represented by the image data linked in FIG. 15 (a), and its file name is “sample.jpgj”. I do.
- the printer in the present embodiment Even if the color space of the image included in the printed content is not known, the color space of the environment in which the printed content was created is estimated based on the information indicating where the image object was generated, and this estimation was performed. Since the color space is converted into the color space of the printer based on the color space obtained, it is possible to obtain a printed matter in a color space close to the color space intended by the provider of the print content.
- the color space conversion is performed after performing the image processing.
- the same effect can be obtained by performing the color space conversion and then performing the image processing by reversing this order.
- the image processing apparatus, the image printing apparatus, and the method used in these apparatuses according to the present invention include image data generated by an electronic imaging apparatus such as a digital still camera or image data displayed on a digital television or the like.
- an electronic imaging apparatus such as a digital still camera or image data displayed on a digital television or the like.
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- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Graphics (AREA)
- Computational Linguistics (AREA)
- Record Information Processing For Printing (AREA)
- Color Image Communication Systems (AREA)
- Image Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Television Signal Processing For Recording (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP03705071A EP1492330A4 (en) | 2002-03-11 | 2003-02-12 | IMAGE PROCESSOR AND IMAGE PRINTER |
US10/507,080 US7557951B2 (en) | 2002-03-11 | 2003-02-12 | Image processor and image printer |
Applications Claiming Priority (4)
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JP2002066041 | 2002-03-11 | ||
JP2002-066041 | 2002-03-11 | ||
JP2002365779A JP2003338943A (ja) | 2002-03-11 | 2002-12-17 | 画像処理装置および画像印刷装置 |
JP2002-365779 | 2002-12-17 |
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WO2003077534A1 true WO2003077534A1 (fr) | 2003-09-18 |
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PCT/JP2003/001423 WO2003077534A1 (fr) | 2002-03-11 | 2003-02-12 | Processeur d'image et dispositif d'impression d'image |
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US (1) | US7557951B2 (ja) |
EP (1) | EP1492330A4 (ja) |
JP (1) | JP2003338943A (ja) |
CN (1) | CN100369453C (ja) |
WO (1) | WO2003077534A1 (ja) |
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US8194269B2 (en) * | 2005-04-11 | 2012-06-05 | Samsung Electronics Co., Ltd. | Image forming method and system using XHTML-print data |
JP4241228B2 (ja) * | 2003-07-11 | 2009-03-18 | キヤノン株式会社 | 撮像装置 |
KR20060013883A (ko) * | 2004-08-09 | 2006-02-14 | 삼성전자주식회사 | 이미지 데이터와 텍스트 데이터를 출력하는 시스템 및 방법 |
KR100647953B1 (ko) * | 2004-11-04 | 2006-11-23 | 엘지전자 주식회사 | 이미지 메타정보를 제공하는 광학줌 카메라형이동통신단말기 |
US9292480B2 (en) * | 2005-07-06 | 2016-03-22 | Encomia, L.P. | Method for displaying and printing different sizes of SMART Docs |
US7822270B2 (en) | 2005-08-31 | 2010-10-26 | Microsoft Corporation | Multimedia color management system |
US8274714B2 (en) | 2005-11-30 | 2012-09-25 | Microsoft Corporation | Quantifiable color calibration |
JP2008027152A (ja) * | 2006-07-20 | 2008-02-07 | Noritsu Koki Co Ltd | 画像データ処理装置および画像データ処理プログラム |
JP2009223376A (ja) * | 2008-03-13 | 2009-10-01 | Seiko Epson Corp | 画像処理装置及びその制御方法 |
JP4659858B2 (ja) * | 2008-06-30 | 2011-03-30 | シャープ株式会社 | 画像形成装置、プログラム、及び記録媒体 |
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Also Published As
Publication number | Publication date |
---|---|
EP1492330A4 (en) | 2008-04-09 |
CN1643893A (zh) | 2005-07-20 |
JP2003338943A (ja) | 2003-11-28 |
US7557951B2 (en) | 2009-07-07 |
US20050151986A1 (en) | 2005-07-14 |
EP1492330A1 (en) | 2004-12-29 |
CN100369453C (zh) | 2008-02-13 |
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