WO2014079360A1 - 一种扫描仪及其操作方法 - Google Patents

一种扫描仪及其操作方法 Download PDF

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Publication number
WO2014079360A1
WO2014079360A1 PCT/CN2013/087503 CN2013087503W WO2014079360A1 WO 2014079360 A1 WO2014079360 A1 WO 2014079360A1 CN 2013087503 W CN2013087503 W CN 2013087503W WO 2014079360 A1 WO2014079360 A1 WO 2014079360A1
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Prior art keywords
color space
digital information
scanner
output
input
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PCT/CN2013/087503
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English (en)
French (fr)
Inventor
王渤渤
吴海娟
孔佳琛
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艾塔斯科技(镇江)有限公司
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Publication of WO2014079360A1 publication Critical patent/WO2014079360A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46Colour picture communication systems
    • H04N1/56Processing of colour picture signals
    • H04N1/60Colour correction or control
    • H04N1/6058Reduction of colour to a range of reproducible colours, e.g. to ink- reproducible colour gamut

Definitions

  • the present invention relates to the field of scanners, and more particularly to a scanner and an operating method thereof. Background of the invention
  • a scanner is an image capture device that converts images of paper text into a digital format that can be displayed, edited, stored, and exported by a computer, such as JPEG, JPG, TIFF, MTIFF, or PDF.
  • Scanners are used in a wide range of applications, such as combining art graphics and photo scanning into documents; scanning printed text into word processing software to avoid re-typing; scanning fax files into database software or word processing software for storage ; and add images to multimedia, and more.
  • the first generation of flatbed scanners was introduced.
  • the functions of the first generation scanners were limited to scanning only black and white texts and single black and white lines, and the input speed and output speed of the single graphics and text were compared.
  • the second generation of scanners introduced in 1986 in the first generation of scanners Based on the addition of black and white grayscale function, it can scan black and white images with grayscale changes, so that the scanned black and white images are layered in the image file output, and the images are more realistic.
  • the third generation scanner introduced in 1989 makes the scanner Entering the color era, color scanners can scan color prints and color photos, and output color image formats for editing and processing.
  • the fourth generation scanners that appeared in 1996 will be scanners. Integration with printers and fax machines, so that the scanner has some copy, fax, and print functions. But still as a peripheral device of a computer, its function must use the computer to complete.
  • the network scanner is only an image capturing and image output tool, and has a single function, which cannot meet the increasingly diverse working environment and operation requirements. Therefore, it is necessary to develop a new generation of scanners that can be connected to the Internet to exchange information, and scan file information to be transmitted over the network to any network device or device connected to the Internet for editing, storage, backup, and printing;
  • the scanner In the operating environment of the computer network, the scanner is designed to have more independent functions, can independently complete the operational tasks required by the user, and gradually get rid of its functional dependence on external devices such as computers, and no longer serve as peripheral devices of the computer. , Ancillary equipment. This is an important technical problem that needs to be solved urgently in the field of scanners.
  • scanners have become an image processing device shared in the network, which has become a network scanner.
  • the early scanner consisted of a scanning head, control circuit and mechanical components.
  • the progressive scanning method was used.
  • the obtained digital signals were saved in a dot matrix, and the image editing software was used to edit the image signals into a standard format for storage. .
  • the current scanner is still a computer peripheral, used only as an image capture and input device to scan scanned objects such as photos, text pages, drawings, art drawings, photographic films, film films, etc., and the scanner obtains their originals. Lines, graphics, text, photos, flat objects and other information are converted into digital information format.
  • printers use cyan, magenta, yellow, and black (CMYK) inks to print, so colors are specified using CMYK.
  • CMYK cyan, magenta, yellow, and black
  • the color of the scanner is expressed in RGB mode. Therefore, to print the RGB color, a color conversion step is required, otherwise the printer's ink cannot print all the RGB colors.
  • RGB is transferred to CMYK, there is a serious color shift problem.
  • the image file scanned by the scanner is edited by the editing software to change the RGB mode to CMYK mode to avoid the use of unprintable colors, but the digital information generated by the specific image message is generated. It must be edited and processed by a computer before it can be transferred to the printer for printout. Summary of the invention
  • the image data defined by the digital information can be directly printed without being processed by a PC.
  • An embodiment of the present invention provides a scanner, including:
  • a color space processing module converting the input color space associated with the digital information to an output color space, and outputting the color space to define digital information of the image data
  • a print processing module wherein the digital information defining the image data is described as a language "g" format recognizable by the printer;
  • the processor is configured to connect the operation interface unit, the scanning unit, the color space processing module, and the print processing module, and control the scanning unit, the color space processing module, and the print processing module based on an instruction input by the operation interface unit.
  • the operation interface unit includes: a storage function key, configured to trigger the processor to send a color space of the digital information to the memory storage; and a print function key, configured to trigger the processor to define the
  • the digital information of the image data is sent to the external printing device for printing; the black and white and color scanning keys are used to select the scanning type; and the numeric keys, the cancel key and the confirmation key are used for manual input as the receiving party of the transmission storage or the receiving of the transmission printing.
  • the IP address of the party configured to trigger the processor to send a color space of the digital information to the memory storage
  • a print function key configured to trigger the processor to define the
  • the digital information of the image data is sent to the external printing device for printing; the black and white and color scanning keys are used to select the scanning type; and the numeric keys, the cancel key and the confirmation key are used for manual input as the receiving party of the transmission storage or the receiving of the transmission printing.
  • the IP address of the party is a storage function key, configured to trigger the processor to send a color space of
  • the color space processing module includes:
  • a gamut mapping module that maps the input color space associated with the digital information to an output color space within a printer's performance range
  • a color correction module that converts color data of the input color space associated with the digital information into color data of the output color space.
  • the scanner further comprises: a memory, storing the digital information and a color table of different printers.
  • the scanner further includes: an address management unit connected to the processor for managing an address as a recipient of the transmission print.
  • the scanner further includes: a color space normalization module coupled to the processor for converting the digital color space of the digital information into a standard color space.
  • the scanner further includes: a bottom ash processing module coupled to the processor for processing a bottom ash phenomenon of the paper that occurs during scanning.
  • the scanner further comprises: a network connection unit, connected to the processor, for sweeping The scanner is connected to a network or other network device.
  • An embodiment of the present invention provides a method for operating a scanner, including: receiving digital information generated when a scanning unit scans a file; converting an input color space associated with the digital information to an output color space, and defining an output color space output Digital information of image data; the digital information defining the image data is described as a language recognizable by the printing device; the language is sent to an external printing device for direct printing.
  • the converting the input color space associated with the digital information to the output color space comprises: converting the input color space associated with the digital information to an output color space based on a color model of a different model printer (COLOR CHART).
  • the converting the input color space associated with the digital information to the output color space to output the color space output defines the digital information of the image data, including:
  • the color data of the input color space associated with the digital information is converted into color data of the output color space.
  • the color space conversion rule comprises: a first rule of converting the input color space into an intermediate format and a second rule of converting the intermediate format into an output color space.
  • the input color space is an original RGB color space of the image information defined by the digital information or a standardized RGB color space
  • the output color space is a CMYK color space.
  • the scanner provided by the present invention is provided with a color space processing module, which can directly convert the color space related to the digital information generated by the scan into a color space system that can be directly recognized and printed by the printer.
  • the driver processes the description language format recognizable by the printer and directly sends it to the network printer for printing through the network, without the need to process and send the printing action through the computer PC, and does not need to perform color conversion processing by the printer, so that the scanner is intelligently integrated. , reduce the intermediate steps of scanning-printing processing, the process of cylindrical scanning and printing processing, to meet the market demand of mobile office.
  • FIG. 1 is a schematic structural diagram of a scanner according to a first preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an operation interface and a display interface according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an operation flow of a scanner according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a color space conversion process according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a scanner according to another preferred embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an operation flow of a scanner according to an embodiment of the present invention. Mode for carrying out the invention
  • FIG. 1 is a schematic structural diagram of a scanner according to a first preferred embodiment of the present invention.
  • the scanner includes a processor 100 and a scanning unit 101 connected to the processor 100, a memory 102, an operation interface unit 103, a network connection unit 104, a color space processing module 105, and a print processing module 106.
  • the processor 100 performs an overall control function on the scanner, and controls the scanner to perform corresponding operations and implement specific functions according to instructions input to the scanner and preset programs.
  • the scanning unit 101 is configured to scan a file to generate a digital information, and has a scanner common component such as an optical imaging module, and is used for a carrier that carries certain data information such as a document, a picture, a photo, a film, a slide, and the like to be scanned. , scan to generate digital information.
  • a scanner common component such as an optical imaging module
  • the operation interface unit 103 is configured to input an instruction to cause the scanner to operate and perform a corresponding operation.
  • figure 2 A schematic diagram of an operation interface and a display interface is provided in the embodiment of the present invention. As shown in FIG. 2, the operation interface unit 103 includes a storage function key 103a and a print function key 103b for setting a transmission storage mode and a transmission printing mode of the scanner, respectively. The operation interface unit 103 further includes a black and white scan key 103c and a color scan key 103d.
  • the user can first select the transmission storage mode or the transmission print mode by the storage function key 103a or the print function key 103b, and then select the black-and-white scan or the color scan job by the black-and-white scan key 103c or the color scan key 103d.
  • the operation interface unit 103 further includes an operation panel 103e having input keys such as a numeric button, a cancel button, and a confirmation button. Through these input keys, the user can manually input a PC, a printer, or a network storage space.
  • the IP address is set as the IP address of the recipient who sent the storage or the recipient who sent the print.
  • the scanner can also implement address selection through the scanner's address management unit 107.
  • the address management unit 107 is configured to store an address book and sort the addresses in the address book according to a certain rule. The address management unit 107 can recognize the address book imported from the outside and store it in the storage unit 102.
  • the address management unit 107 has a sorting unit (not shown) for sorting the addresses in the address book according to a certain rule, for example, sorting the addresses according to the number of times of each address, and sorting the sorted addresses. Displayed on the display unit 108. As shown in Figure 2, the address can be named and processed and displayed by the scanner.
  • the display unit 108 is an LED display screen having a transmission object address display area 108a and an address sequence display area 108b.
  • each page can display 5 addresses, and the address sorted at the first bit is automatically used as the selected recipient address, input to the processor 100, and transmitted
  • the object address display area 108a displays the address.
  • the color space processing module 105 is configured to perform color processing such as color space conversion.
  • the image data related to the digital information generated by the scanner scan is the original RGB (Red, Green, Black) color space, but the color space of the image data within the printer's performance range is CMYK (Cyan, Magenta, Yellow) , Black ) color space, so in the send print mode, the digital information generated by the scanner scan is processed by the color space processing module 105, and the digital information is correlated.
  • the input color space is converted to a printer printable output color space, the CMYK color space, for easy identification by the printer.
  • the color space processing module 105 includes a color gamut mapping module 105a for performing gamut mapping by means of gamut compression, tone compression or white field mapping, and mapping the input color space into an output color space that can be represented by the printer. a gamut-mapped parameter value of the input color space; and a color correction module 105b for performing color correction according to a color space conversion rule, for example, based on a multi-dimensional lookup table, converting the input color space related to the digital information generated by the scan into an output color space.
  • Color space conversion rules can be pre-configured in the color space processing module 105 without the need to create conversion rules.
  • the print processing module 106 is configured to describe the digital information outputted by the output color space into a language format that can be recognized by the printer and directly printed, so that the printer can directly print the language to be scanned after receiving the language format of the digital information defining the file to be scanned. The image of the file.
  • the scanner may further include a color space normalization module 109 for converting the original RGB color space of the scanned digital information into a standard RGB color space after performing black and white and color scanning, for example, sRGB, AdobeRGB.
  • the color space is such that the image data displayed on the display of the PC and the image data printed by the printer are the same image data without color deviation due to different compensation algorithms or circuits.
  • the scanner may further include a bottom ash processing module 110 for processing the bottom ash phenomenon of the paper which often occurs during scanning.
  • the color space normalization module 109 and the bottom ash processing module 110 are separately designed from the color space processing module 105. In other embodiments, color space normalization module 109 and bottom gray processing module 110 and color space processing module 105 may also be integrated.
  • the color space normalization module 109 can be implemented using a compensation circuit or color space normalization software.
  • the scanner may further include a network connection unit 104, which may be a wireless network transceiver device, and the scanner is connected to the network through a wireless link to implement transmission storage and transmission printing.
  • a network connection unit 104 which may be a wireless network transceiver device, and the scanner is connected to the network through a wireless link to implement transmission storage and transmission printing.
  • FIG. 3 is a schematic diagram of an operation flow of a scanner according to an embodiment of the present invention. As shown in FIG. 3, the method includes: providing a scan object; setting an operation mode; determining whether the current mode is a send print mode; No, it continues to judge whether it is the transmission storage mode; if not, it can end the flow or return to determine whether it is the transmission print mode.
  • the process can be ended or returned to determine whether Color scan job.
  • the scan job is executed according to the selected scan mode, a digit information is generated, and the digit information is original.
  • the RGB color space is converted into a standard RGB color space, such as sRGB, AdobeRGB and other color spaces.
  • a standard RGB color space such as sRGB, AdobeRGB and other color spaces.
  • the input information color space related to the digital information is converted into a printable color space of the printer, that is, CMYK color space, finally send print.
  • the scan operation is performed according to the selected scan mode, a digital information is generated, and the original RGB color space of the digital information is converted into a standard RGB color space, and the bottom ash phenomenon of the paper during scanning is performed. After processing, store directly.
  • the transmission print may be a printer sent to a specific IP address in the access network via a network to perform a print job without going through the PC.
  • the transmission storage may be an external storage space that is sent to a specific IP address, such as a PC stored in the access network, or a network storage space, such as a cloud storage server.
  • the scanner when transmitting the store, transmits the output by converting the digital information generated by the scan into a specific output format, including but not limited to PDF, JPG, and the like.
  • FIG. 4 is a schematic flow chart of a color space conversion process according to an embodiment of the present invention. As shown in Figure 4, the process includes:
  • the color mapping process maps the input color space to the output color space that the printer can express, and obtains the parameter value of the input color space after the gamut mapping; wherein, by gamut compression, tone compression or white Field mapping and other methods for gamut mapping;
  • Color correction processing for example, color correction based on a multi-dimensional lookup table, converting an input color space related to digital information generated by scanning into an output color space;
  • the output color space the output defines the digital information of the image data.
  • the color space conversion rule includes a first rule for converting the input color space into an intermediate format and a second rule for converting the intermediate format to an output color space.
  • the first rule is an operation rule for converting a parameter of the input color space into a color value parameter of the CIE-based XYZ color space, that is, an operation rule for inputting the color space to the intermediate format CIE XYZ color space,
  • the input color space associated with the scanner scan to generate digital information is converted into an intermediate format (ie, Profile Connection Space PCS, Profile Connection Space) that is independent of input devices such as scanners.
  • the second rule is a rule for converting the intermediate format into an output color space, which is used to convert an intermediate format unrelated to the input device into an output color space that the printer can express, and complete the color conversion process from the input color space to the output color space to facilitate Direct identification and printing by the printer.
  • CMYK color tables COLOR CHART
  • gamut mapping and color correction processing are performed based on different CMYK color tables, thereby enabling the scanner to Directly convert the input color space of the scanned input data into the CMYK color system corresponding to the printer of different models, so that the same scanner can directly convert its corresponding CMYK color system to different models without going through a PC. Edit processing.
  • the color space conversion rule of the polynomial and the lookup table, or the color space conversion rule based on the neural network and the fuzzy theory may be implemented, and the input color space of the scanner scan input is output to the printer performance capability range.
  • the color space is converted to facilitate direct printing by the printer, without the need for additional processing via the PC, and no need for color processing through the printer, thereby affecting the printing speed.
  • Similar functions such as the Chinese invention patent application No. 201110086627.X (inverse color space conversion method based on table lookup method) and the patent document No. 201110028562.3 (color space conversion method based on fuzzy theory and neural network) are disclosed in this patent document. No longer detailed.
  • the digital information outputted in the output color space is described as a language format that can be recognized and directly printed by the printer, so that the printer can directly print the language to be scanned after receiving the language format defining the digital information of the file to be scanned. The image of the document.
  • rasterizing the data by a dot diffusion method Dot Diffusion
  • Error Diffusion error diffusion algorithm
  • order dither ordered dither algorithm
  • the language format corresponding to the resolution may also be processed based on the resolution of the performance of the different printers to send the print.
  • FIG. 5 is a schematic diagram of a scanner module according to another preferred embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an operation flow of a scanner according to an embodiment of the present invention.
  • the color space normalization module is no longer set in the scanner in this embodiment, and the color space normalization processing is no longer performed. That is, the original RGB color space of the image data related to the scanned digital information is directly subjected to the color space conversion processing after the bottom gray processing, and the original RGB color space is directly converted into an output color space within the range of the printer performance capability, that is, in the color space.
  • the input color space during the conversion process is the original RGB color space, which improves the processing speed and efficiency of the scanner.
  • An embodiment of the present invention further provides a method for operating a scanner, the method comprising: scanning a scan file according to an instruction of an operation interface unit, and generating digital information, and the color space processing module receives the digital information and the digital information
  • the information-related input color space is converted to the output color space, and the output color space output defines the digital information of the image data, and then the digital information defining the image data is described as a language recognizable by the printing device, and sent to the external printing device directly Print it.
  • the scanner and the operation method thereof according to the present invention can perform or not perform conversion processing on the color space of the digital information generated by scanning according to the operation mode selected by the user, and pass the scanner when in the transmission printing mode.
  • the color space processing module directly converts the CMYK color space of the RGB to printer performance related to the scanner scan data, so that it can be directly printed by the printer without additional conversion processing by the PC, and the scan-printing is improved. s efficiency.
  • the digital information is described as a language format that the printer can directly recognize and print. After receiving the language format, the printer can directly print the image data of the digital information defined by the printer, so as to get rid of the traditional scanner needs
  • the three-machine interconnection of PC and printer can realize the limitation of scanning-printing output function, which makes the scanner change from traditional peripheral to active and intelligent equipment, which greatly expands its application, and also realizes the scanning and printing processing. Process to meet the market needs of mobile office.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)
  • Image Processing (AREA)

Abstract

本发明实施例提供一种扫描仪和操作方法,可将扫描生成数位信息直接转换成打印机可直接印刷的色彩制式。该扫描仪包括:操作界面单元,输入指令以令扫描仪动作;扫描单元,执行扫描操作,生成数位信息;色彩空间处理模块,将所述数位信息相关的输入色彩空间转换至输出色彩空间,以输出色彩空间输出定义了图像数据的数位信息;打印处理模块,将所述定义了图像数据的数位信息描述成打印机可识别的语言格式;处理器,连接所述操作界面单元、扫描单元、色彩空间处理模块及打印处理模块,并基于所述操作界面单元输入的指令控制所述扫描单元、色彩空间处理模块及打印处理模块。

Description

一种扫描{ ^其操作方法 技术领域
本发明涉及扫描仪领域, 尤其涉及一种扫描仪及其操作方法。 发明背景
扫描仪是一种影像捕获装置, 可将纸质文本的影像转换为计算机可以显示、 编辑、 储存和输出的数字格式, 如 JPEG、 JPG, TIFF, MTIFF、 或 PDF等格式。 扫描仪的应用范围很广泛, 例如将美术图形和照片扫描结合到文件中; 将印刷 文字扫描输入到文字处理软件中, 避免再重新打字; 将传真文件扫描输入到数 据库软件或文字处理软件中储存; 以及在多媒体中加入影像等等。
就目前而言, 扫描仪大致经历了四个阶段的发展:
在 1984年前后, 第一代平板式扫描仪的面世, 第一代扫描仪的功能局限于 仅扫描黑白文字和筒单黑白线条图形, 且对筒单图形和文字的输入速度和输出 速度都比较慢, 分辨率也较低, 装置体积较大, 使用不方便; 但扫描仪在问世 后便拥有广泛的市场应用价值和市场前景; 1986年推出的第二代扫描仪在第一 代扫描仪的基础上增加了黑白灰阶的功能, 可以扫描具有灰阶变化的黑白图像, 使得扫描的黑白图像在图像文件输出时富有层次感, 图像更加真实; 1989年推 出的第三代扫描仪使扫描仪进入了彩色时代, 彩色扫描仪能够扫描彩色印刷品 和彩色照片, 并输出彩色图片格式给计算机进行编辑处理; 随着其他办公设备 的发展和普及, 1996年出现的第四代扫描仪, 将扫描仪与打印机、 传真机整合, 使扫描仪兼具有了一些复印、 传真、 打印的功能, 但仍作为计算机的外围设备, 其各项功能必须借助计算机才能完成。
在现有技术中, 网络扫描仪仅仅是图像捕获和图像输出工具, 功能单一,已 经不能满足日渐多样性的工作环境和操作要求。 因此, 目前必须开发新一代的 扫描仪, 能够与互联网相连接而交换信息, 扫描文件信息经过网络的传输到达 与互联网络相连的任何网络设备或装置, 进行编辑整理、 储存备份、 打印; 在 计算机网络中运行环境中, 将扫描仪设计成为具备更多的独立的功能, 能够独 立完成用户所需的操作任务, 并逐步摆脱其对外部设备如计算机的功能依赖, 不再作为计算机的外围设备、 附属设备。 这是目前扫描仪领域内急需解决的重 要技术问题。
随着办公环境中互联网络的流行和普及,扫描仪成为了一种在网络中共享的 影像处理装置, 即成为了网络扫描仪。 早期的扫描仪由扫描头、 控制电路和机 械部件组成, 采取逐行扫描的工作方式, 得到的数字信号以点阵的形式保存, 再使用文件编辑软件将影像信号编辑成标准格式的文本进行储存。 目前的扫描 仪仍是一种计算机外围设备, 仅作为图像的捕获和输入装置, 对照片、 文本页 面、 图纸、 美术图画、 照相底片、 菲林软片等扫描对象进行扫描处理, 扫描仪 获取它们的原始线条、 图形、 文字、 照片、 平面实物等信息并转换成数位信息 格式, 习知, 打印机是使用青、 洋红、 黄、 黑四色 (CMYK ) 油墨打印, 因此 色彩是采用 CMYK来指定。 可是扫描仪的色彩是采用 RGB模式表示, 也因此 要把 RGB色彩打印刷出来, 就要经过一道色彩转换的步骤, 否则打印机的油墨 没有办法印出所有的 RGB色彩。 再者, RGB转 CMYK的时候, 都有着严重的 色偏问题。 目前技术上, 扫描仪所扫描的图像文件会借由编辑软件把 RGB模式 换成 CMYK模式来编辑, 以避免使用到无法印刷的色彩, 然而如此一来其产生 的载有特定影像讯息的数位信息必须通过计算机进行编辑与处理, 然后才能传 输至打印机进行打印输出。 发明内容
本发明的目的旨在提供一种扫描仪和操作方法,可将扫描生成数位信息直接 转换成打印机可直接印刷的色彩制式, 并描述成打印机可直接打印的语言格式, 以利在传输至打印机时可直接打印该数位信息所定义的图像数据, 而无需再通 过 PC机处理。
本发明实施例提供了一种扫描仪, 包括:
操作界面单元, 输入指令以令扫描仪动作; 扫描单元, 执行扫描操作, 生成数位信息;
色彩空间处理模块,将所述数位信息相关的输入色彩空间转换至输出色彩空 间, 以输出色彩空间输出定义了图像数据的数位信息;
打印处理模块,将所述定义了图像数据的数位信息描述成打印机可识别的语 "g"格式;
处理器, 连接所述操作界面单元、扫描单元、 色彩空间处理模块及打印处理 模块, 并基于所述操作界面单元输入的指令控制所述扫描单元、 色彩空间处理 模块及打印处理模块。
其中, 所述操作界面单元包括: 存储功能键, 用于触发所述处理器将所述数 位信息的色彩空间发送至所述存储器存储; 打印功能键, 用于触发所述处理器 将所述定义了图像数据的数位信息发送至外部打印设备打印; 黑白及彩色扫描 键, 用于选择扫描类型; 及数字按键、 取消键和确认键, 用于手动输入作为发 送存储的接收方或发送打印的接收方的 IP地址。
其中, 所述色彩空间处理模块包括:
色域映射模块,将所述数位信息相关的输入色彩空间映射至打印机表现范围 内的输出色彩空间内;
色彩校正模块,将所述数位信息相关的输入色彩空间的颜色数据转换成输出 色彩空间的颜色数据。
其中, 所述扫描仪进一步包括: 存储器, 存储所述数位信息及不同机型打印 机的颜色表。
其中, 所述扫描仪进一步包括: 地址管理单元, 连接所述处理器, 用于管理 作为发送打印的接收方的地址。
其中, 所述扫描仪进一步包括: 色彩空间标准化模块, 连接所述处理器,用 于将所述数位信 , ¾的原始色彩空间转换为标准色彩空间。
其中, 所述扫描仪进一步包括: 底灰处理模块, 连接所述处理器, 用于处理 扫描时出现的纸张的底灰现象。
其中, 所述扫描仪进一步包括: 网络连接单元, 连接所述处理器, 用于将扫 描仪连接至网络或其他网络设备。
本发明实施例提供了一种扫描仪的操作方法, 包括:接收扫描单元扫描文件 时生成的数位信息; 将所述数位信息相关的输入色彩空间转换至输出色彩空间, 以输出色彩空间输出定义了图像数据的数位信息; 将所述定义了图像数据的数 位信息描述成打印设备可识别的语言; 将所述语言发送至外部打印设备直接进 行打印。
其中, 进一步包括:
下载并存储不同机型打印机的颜色表;
则所述将所述数位信息相关的输入色彩空间转换至输出色彩空间包括: 基于不同机型打印机的颜色表( COLOR CHART )将所述数位信息相关的输 入色彩空间转换至输出色彩空间。
其中,所述将所述数位信息相关的输入色彩空间转换至输出色彩空间, 以输 出色彩空间输出定义了图像数据的数位信息包括:
将所述数位信息相关的输入色彩空间映射至打印设备表现范围内的输出色 彩空间内;
将所述数位信息相关的输入色彩空间的颜色数据转换成输出色彩空间的颜 色数据。
其中,将所述数位信息相关的输入色彩空间的颜色数据转换成输出色彩空间 的颜色数据时基于一定的色彩空间转换规则。
其中,所述色彩空间转换规则包括: 将所述输入色彩空间转换为中间格式的 第一规则和将所述中间格式转换为输出色彩空间的第二规则。
其中,所述将所述数位信息相关的输入色彩空间转换至输出色彩空间, 以输 出色彩空间输出定义了图像数据的数位信息前, 进一步包括: 将所述数位信息 的原始色彩空间转换为标准色彩空间。
其中, 所述输入色彩空间为所述数位信息所定义图像信息的原始 RGB色彩 空间或经过标准化处理的标准 RGB色彩空间, 所述输出色彩空间为 CMYK色 彩空间。 由以上本发明的技术方案可知,本发明提供的扫描仪,设置了色彩空间处理 模块, 可直接将扫描生成的数位信息相关的色彩空间转换成可被打印机直接识 别和打印的色彩空间制式, 通过驱动处理成打印机可识别的描述语言格式, 并 通过网络直接发送至网络打印机打印,而无需再通过计算机 PC进行处理和发送 打印动作, 也无需再由打印机进行色彩转换处理, 使扫描仪智能化集成, 减少 扫描-打印处理的中间步骤, 筒化扫描、 打印处理的流程, 满足移动办公的市场 需求。 附图筒要说明
图 1为本发明第一较优实施例提供的扫描仪的结构示意图。
图 2为本发明实施例提供的操作界面和显示界面的示意图。
图 3为本发明实施例提供扫描仪的操作流程示意图。
图 4为本发明实施例提供的色彩空间转换处理的流程示意图。
图 5为本发明另一优选实施例提供的扫描仪的结构示意图。
图 6为本发明一实施例提供的扫描仪的操作流程示意图。 实施本发明的方式
为了更了解本发明的技术内容, 特举具体实施例并配合所附图式说明如下。 图 1为本发明第一较优实施例提供的扫描仪的结构示意图。 如图 1所示,扫 描仪包括处理器 100和连接至处理器 100的扫描单元 101、 存储器 102、 操作界 面单元 103、 网络连接单元 104、 色彩空间处理模块 105和打印处理模块 106。 其中, 处理器 100执行对扫描仪的整体控制功能, 根据对扫描仪输入的指令和 预设的程序, 控制扫描仪执行对应的操作和实现具体的功能。
扫描单元 101 , 用以扫描文件, 以生成一数位信息, 其具有光学成像模块等 扫描仪通用部件, 用于对待扫描文件如文档、 图片、 照片、 胶片、 幻灯片等载 有一定数据信息的载体, 进行扫描, 生成数位信息。
操作界面单元 103 , 用以输入指令以令扫描仪动作, 执行对应的操作。 图 2 为本发明实施例中提供操作界面和显示界面的示意图。 如图 2所示, 操作界面 单元 103包括存储功能键 103a和打印功能键 103b,分别用于设定扫描仪的发送 存储模式和发送打印模式。 操作界面单元 103还包括黑白扫描键 103c和彩色扫 描键 103d。 用户可以先通过存储功能键 103a或打印功能键 103b选择发送存储 模式或发送打印模式, 再通过黑白扫描键 103c或彩色扫描键 103d选择黑白扫 描或彩色扫描作业。
如图 2所示, 操作界面单元 103还包括操作面板 103e, 其具有数字按键、 取消键和确认键等输入键位, 通过这些输入键位, 用户可手动地输入 PC机、打 印机或网络存储空间的 IP地址, 以设定作为发送存储的接收方或发送打印的接 收方的 IP地址。 当然, 扫描仪还可以通过扫描仪的地址管理单元 107来实现地 址选择。 地址管理单元 107, 用于存储一地址簿并且对地址簿内的地址按照一定 规则排序。 地址管理单元 107可识别从外部导入的地址簿, 并存储在存储单元 102内。 地址管理单元 107具有一排序单元(未绘示), 用以对地址簿内的地址 按照一定的规则进行排序, 例如按照每个地址的使用次数对地址进行排序, 并 将该排序后的地址序列显示在显示单元 108上。 如图 2所示, 地址可经命名处 理并被扫描仪识别和显示。
该显示单元 108为一个 LED显示屏, LED显示屏上具有发送对象地址显示 区 108a和地址序列显示区 108b。 优选地, 在上述的地址序列显示区 108b上, 每一页可显示 5个地址, 并将排序在第一位的地址自动地作为被选定的接收方 地址, 输入处理器 100, 并在发送对象地址显示区 108a显示该地址。 通过操作 界面单元 103的一个翻页键 103f, 可上下翻动以选定作为发送存储的接收方或 发送打印的接收方的 IP地址。
色彩空间处理模块 105 , 用于执行色彩空间转换等色彩处理。 在发送打印模 式下, 扫描仪扫描生成的数位信息有关的图像数据为原始 RGB ( Red、 Green, Black ) 色彩空间, 但打印机表现能力范围内的图像数据的色彩空间为 CMYK ( Cyan, Magenta, Yellow, Black ) 色彩空间, 因此在发送打印模式下, 扫描仪 扫描生成的数位信息经过色彩空间处理模块 105的转换处理, 将数位信息相关 的输入色彩空间转换为打印机可印刷的输出色彩空间, 即 CMYK色彩空间, 以 利可直接被打印机识别。
色彩空间处理模块 105包括色域映射模块 105a, 用于通过色域压缩、 阶调 压缩或白场映射等方法, 进行色域映射, 将输入色彩空间映射到打印机可表现 的输出色彩空间内, 得到色域映射后的输入色彩空间的参数值; 以及色彩校正 模块 105b , 用于根据色彩空间转换规则, 例如基于多维查找表进行色彩校正, 将扫描生成的数位信息相关的输入色彩空间转换成输出色彩空间。 色彩空间处 理模块 105中可以预设有色彩空间转换规则, 而无需创建转换规则。
打印处理模块 106 ,用于将输出色彩空间输出的数位信息描述成打印机可识 别和直接打印的语言格式, 以利打印机接收该定义了待扫描文件的数位信息的 语言格式后, 可直接打印待扫描文件的图像。
如图 1所示, 扫描仪还可以包括一个色彩空间标准化模块 109, 用于在执行 黑白和彩色扫描后, 将扫描生成的数位信息的原始 RGB色彩空间变换为标准 RGB色彩空间, 例如 sRGB、 AdobeRGB等色彩空间, 以利在 PC机的显示器上 显示的图像数据以及经打印机打印的图像数据为同一图像数据, 而不会因不同 的补偿算法或电路而产生色彩偏差。
如图 1所示, 扫描仪还可以包括一个底灰处理模块 110, 用于对扫描时经常 出现的纸张的底灰现象进行处理。
如图 1所示,色彩空间标准化模块 109和底灰处理模块 110与色彩空间处理 模块 105分立地设计。 在另外的实施例中, 色彩空间标准化模块 109和底灰处 理模块 110与色彩空间处理模块 105也可以集成设计。
本发明一实施例中,可以利用一个补偿电路或者色彩空间标准化软件实现色 彩空间标准化模块 109。
本实施例中, 扫描仪还可以包括网络连接单元 104 , 可以是无线网络收发装 置, 通过无线链路将扫描仪接入网络, 以实现发送存储和发送打印。
图 3为本发明实施例提供扫描仪的操作流程示意图。如图 3所示,该方法包 括: 提供扫描对象; 设定工作模式; 判断当前模式是否为发送打印模式; 如果 否, 则继续判断是否是发送存储模式; 如果否, 则可以结束流程或回到判断是 否为发送打印模式。
如果以上判断当前模式为发送打印模式,则继续设定扫描模式,判断是否为 彩色扫描作业; 如果否, 则继续判断是否为黑白扫描作业; 如果依然否, 则可 以结束流程或回到判断是否为彩色扫描作业。 一旦确认为彩色或黑白扫描后, 按照选择的扫描模式执行扫描作业, 生成一数位信息, 并将该数位信息的原始
RGB色彩空间转化为标准 RGB色彩空间,例如 sRGB、 AdobeRGB等色彩空间, 同时对扫描时纸张的底灰现象进行处理后, 将数位信息相关的输入色彩空间转 换为打印机可印刷的输出色彩空间, 即 CMYK色彩空间, 最后发送打印。
如果以上判断当前模式为发送存储模式,则继续设定扫描模式,判断是否为 彩色扫描作业; 如果否, 则继续判断是否为黑白扫描作业; 如果依然否, 则可 以结束流程或回到判断是否为彩色扫描作业。 一旦确认为彩色或黑白扫描后, 按照选择的扫描模式执行扫描作业, 生成一数位信息, 并将该数位信息的原始 RGB色彩空间转化为标准 RGB色彩空间,同时对扫描时纸张的底灰现象进行处 理后, 直接存储。
这里, 发送打印可以是经由网络发送至接入网络中特定 IP地址的打印机进 行打印作业, 而无需再通过 PC机。 发送存储可以是发送至特定 IP地址的外部 存储空间, 例如存储于接入网络中的 PC机, 或网络存储空间, 例如云存储服务 器等。
优选地,在发送存储时,扫描仪通过将扫描生成的数位信息转换成特定的输 出格式进行发送输出, 包括但不限于 PDF、 JPG等。
在本发明一实施例中,设定工作模式的动作可以发生在设定扫描模式动作之 后。 另外, 判断打印模式和存储模式的顺序可以交换; 判断彩色扫描和黑白扫 描的顺序也可以交换。 图 4为本发明实施例提供的色彩空间转换处理的流程示 意图。 如图 4所示, 该流程包括:
色彩映射处理, 将输入色彩空间映射到打印机可表现的输出色彩空间内,得 到色域映射后的输入色彩空间的参数值; 其中, 通过色域压缩、 阶调压缩或白 场映射等方法进行色域映射;
色彩校正处理,根据色彩空间转换规则,例如基于多维查找表进行色彩校正, 将扫描生成的数位信息相关的输入色彩空间转换成输出色彩空间;
输出色彩空间, 输出定义了图像数据的数位信息。
本实施例中,色彩空间转换规则包括将输入色彩空间转换成中间格式的第一 规则以及将中间格式转换成输出色彩空间的第二规则。 优选地, 第一规则为将 输入色彩空间的参数转换成基于 CIE的 XYZ色彩空间的色彩值参数的运算规 贝 |J , 即输入色彩空间至中间格式 CIE XYZ色彩空间的运算规则, 用以将扫描仪 扫描生成数位信息相关的输入色彩空间转换成与扫描仪等输入设备无关的中间 格式(即特性档案连接空间 PCS, Profile Connection Space )。 第二规则为将中间 格式转换成输出色彩空间的规则, 用以将与输入设备无关的中间格式转换成打 印机可表现的输出色彩空间, 完成输入色彩空间至输出色彩空间的色彩转换处 理, 以利由打印机直接识别与印刷。
优选地, 可以将基于不同机型打印机表现能力范围内的不同的 CMYK色彩 表(COLOR CHART )下载至扫描仪, 基于不同的 CMYK色彩表而进行色域映 射和色彩校正处理, 从而使扫描仪可直接将扫描输入数据的输入色彩空间直接 转换成不同机型的打印机对应的 CMYK色彩制式, 以利让同一扫描仪可直接向 不同机型转换其对应的 CMYK色彩制式, 而无需透过 PC机进行编辑处理。 在 本发明一实施例中, 还可基于多项式和查找表的色彩空间转换规则, 或者基于 神经网络和模糊理论的色彩空间转换规则, 实现扫描仪扫描输入的输入色彩空 间至打印机表现能力范围的输出色彩空间的转换处理, 以利打印机直接印刷, 而无需再通过 PC进行额外处理, 也无需再通过打印机进行色彩处理, 从而影响 打印速度。 类似功能例如中国发明专利申请第 201110086627.X号 (基于查表法 的反向色彩空间转换方法)和第 201110028562.3号 (基于模糊理论和神经网络 的色彩空间转换方法)等专利文献中揭示, 在此不再详述。 本实施例中, 将以 输出色彩空间输出的数位信息描述成打印机可识别和直接打印的语言格式, 以 利打印机接收该定义了待扫描文件的数位信息的语言格式后, 可直接打印待扫 描文件的图像。 优选地, 在发送前述语言格式进行打印前, 进一步包括半色调 处理, 通过点扩散法( Dot Diffusion )、 误差扩散算法( Error Diffusion )、 有序抖 动算法( ordered dither )等方式将数据光栅化以实现打印机的打印输出。
在本发明一实施例中,还可基于不同打印机表现能力的分辨率,处理对应分 辨率的语言格式以发送打印。
图 5所示为本发明另一优选实施例的扫描仪模块示意图。图 6为本发明一实 施例提供的扫描仪的操作流程示意图。 较之本发明的图 1和图 3所示的扫描仪 和操作流程, 本实施例中不再在扫描仪内设置色彩空间标准化模块, 不再执行 色彩空间标准化处理。 即, 扫描生成的数位信息有关的图像数据的原始 RGB色 彩空间直接经底灰处理后进行色彩空间转换处理, 将原始 RGB色彩空间直接转 换成打印机表现能力范围内的输出色彩空间, 即在色彩空间转换过程中的输入 色彩空间为原始 RGB色彩空间, 提高扫描仪的处理速度和效率。
本发明实施例进一步提供了一种扫描仪的操作方法,该方法包括: 扫描单元 根据操作界面单元的指令对待扫描文件进行扫描, 并生成数位信息, 色彩空间 处理模块接收该数位信息并将该数位信息相关的输入色彩空间转换至输出色彩 空间, 以输出色彩空间输出定义了图像数据的数位信息, 然后将定义了图像数 据的数位信息描述成打印设备可识别的语言, 并发送至外部打印设备直接进行 打印。 综上所述, 本发明提供的扫描仪及其操作方法, 可根据用户选择的操作 方式, 对扫描生成的数位信息的色彩空间执行或不执行转换处理, 当在发送打 印模式下, 通过扫描仪内的色彩空间处理模块直接进行与扫描仪扫描数据相关 的 RGB到打印机表现能力的 CMYK色彩空间的转换, 以利直接可被打印机印 刷而无需在通过 PC机进行另外的转换处理, 提高扫描-打印的效率。 通过扫描 仪内部的打印处理, 将数位信息描述成打印机可直接识别和打印的语言格式, 打印机通过网络接收该语言格式后可直接印刷其所定义的数位信息的图像数 据, 摆脱传统扫描仪需要与 PC机、 打印机三机互联才可实现扫描 -打印输出功 能的限制, 使扫描仪由传统的外设转变为主动型、 智能型设备, 极大地扩展了 其应用, 而且筒化扫描、 打印处理的流程, 满足移动办公的市场需求。 以上说明书文字与附图仅为对本发明的解释和说明,不以任何形式对本发明 构成限制和限定, 本发明的范围以权利要求书为准, 一切不超出本发明宗旨的 显而易见的修改、 变换和替代方案均在本发明范围内。

Claims

权利要求书
1、 一种扫描仪, 其特征在于, 包括:
操作界面单元, 输入指令以令扫描仪动作;
扫描单元, 执行扫描操作, 生成数位信息;
色彩空间处理模块,将所述数位信息相关的输入色彩空间转换至输出色彩空 间, 以输出色彩空间输出定义了图像数据的数位信息;
打印处理模块,将所述定义了图像数据的数位信息描述成打印机可识别的语
"g"格式;
处理器, 连接所述操作界面单元、扫描单元、 色彩空间处理模块及打印处理 模块, 并基于所述操作界面单元输入的指令控制所述扫描单元、 色彩空间处理 模块及打印处理模块。
2、 根据权利要求 1所述的扫描仪, 其特征在于, 所述操作界面单元包括: 存储功能键, 用于触发所述处理器将所述数位信息的色彩空间发送至所述存储 器存储; 打印功能键, 用于触发所述处理器将所述定义了图像数据的数位信息 发送至外部打印设备打印; 黑白及彩色扫描键, 用于选择扫描类型; 及数字按 键、 取消键和确认键, 用于手动输入作为发送存储的接收方或发送打印的接收 方的 IP地址。
3、 根据权利要求 1所述的扫描仪, 其特征在于, 所述色彩空间处理模块包 括:
色域映射模块,将所述数位信息相关的输入色彩空间映射至打印机表现范围 内的输出色彩空间内;
色彩校正模块,将所述数位信息相关的输入色彩空间的颜色数据转换成输出 色彩空间的颜色数据。
4、 根据权利要求 3所述的扫描仪, 其特征在于, 所述扫描仪进一步包括: 存储器, 存储所述数位信息及不同机型打印机的颜色表。
5、 根据权利要求 1所述的扫描仪, 其特征在于, 所述扫描仪进一步包括: 地址管理单元, 连接所述处理器, 用于管理作为发送打印的接收方的地址。
6、 根据权利要求 1所述的扫描仪, 其特征在于, 所述扫描仪进一步包括: 色彩空间标准化模块, 连接所述处理器, 用于将所述数位信息的原始色彩空间 转换为标准色彩空间。
7、 根据权利要求 1所述的扫描仪, 其特征在于, 所述扫描仪进一步包括: 底灰处理模块, 连接所述处理器, 用于处理扫描时出现的纸张的底灰现象。
8、 根据权利要求 1所述的扫描仪, 其特征在于, 所述扫描仪进一步包括: 网络连接单元, 连接所述处理器, 用于将扫描仪连接至网络或其他网络设备。
9、 一种扫描仪的操作方法, 其特征在于, 包括:
接收扫描单元扫描文件时生成的数位信息;
将所述数位信息相关的输入色彩空间转换至输出色彩空间,以输出色彩空间 输出定义了图像数据的数位信息;
将所述定义了图像数据的数位信息描述成打印设备可识别的语言; 将所述语言发送至外部打印设备直接进行打印。
10、 根据权利要求 9所述的方法, 其特征在于, 进一步包括:
下载并存储不同机型打印机的颜色表;
则所述将所述数位信息相关的输入色彩空间转换至输出色彩空间包括: 基于不同机型打印机的颜色表( COLOR CHART )将所述数位信息相关的输 入色彩空间转换至输出色彩空间。
11、 根据权利要求 9所述的方法, 其特征在于, 所述将所述数位信息相关的 输入色彩空间转换至输出色彩空间, 以输出色彩空间输出定义了图像数据的数 位信息包括:
将所述数位信息相关的输入色彩空间映射至打印设备表现范围内的输出色 彩空间内; 将所述数位信息相关的输入色彩空间的颜色数据转换成输出色彩空间的颜 色数据。
12、 根据权利要求 11所述的方法, 其特征在于, 将所述数位信息相关的输 入色彩空间的颜色数据转换成输出色彩空间的颜色数据时基于一定的色彩空间 转换规则。
13、 根据权利要求 12所述的方法, 其特征在于, 所述色彩空间转换规则包 括: 将所述输入色彩空间转换为中间格式的第一规则和将所述中间格式转换为 输出色彩空间的第二规则。
14、根据权利要求 9所述的方法, 其特征在于, 所述将所述数位信息相关的 输入色彩空间转换至输出色彩空间, 进一步包括: 将所述数位信息的原始色彩 空间转换为标准色彩空间。
15、根据权利要求 9所述的方法, 其特征在于, 所述输入色彩空间为所述数 位信息所定义图像信息的原始 RGB色彩空间或经过标准化处理的标准 RGB色 彩空间, 所述输出色彩空间为 CMYK色彩空间。
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