Abstract: A searchable color encoded file composing method having a step of converting a plurality of document files etc. to color image files based on information replacement type color conversion processing, a step of storing a plurality of color image files prepared by the color conversion processing in a hard disk, a step of searching through the plurality of color image files stored in the hard disk by a color key, and a step of preparing a list of the color image files hit by the search. Due to this, key search technology is added in coding technology utilizing color and therefore the storage and handling of color encoded files are eased.

Abstract: A color conversion method for wide-gamut color spaces, in which color conversion is performed without gamut clipping so that data corresponding to a predetermined wide-gamut color space can be directly output by a display device that supports a different wide-gamut color space from the predetermined wide-gamut color space, and which maintains characteristics of the predetermined wide-gamut color space. The color conversion method includes converting data of a predetermined wide-gamut color space into data of the RGB color space, determining whether the RGB data is outside the gamut of the RGB color space, extending the RGB data and clipping the extended RGB data if the RGB data is outside the gamut of the RGB color space, and dividing the clipped RGB data into a number of regions and performing a mapping operation in units of regions.

Abstract: According to an embodiment, a decolorizing section is placed on a downstream side of a first reading section in a sheet transferring direction. A second reading section is placed on a downstream side of the decolorizing section in the sheet transferring direction. A controller is configured to determine if the decolorizing process is necessary or not on a first side of a sheet based on first image data of the first side read by the first reading section, to read the first side of the sheet having been subjected to the decolorizing process at the decolorizing section by the second reading section if it is determined that the decolorizing process is necessary, and to avoid reading of the first side of the sheet passed through the decolorizing section by the second reading section if it is determined that the decolorizing process is unnecessary.

Abstract: In an image processing apparatus, fast error diffusion processing is performed without increasing the size of an error diffusion processing circuit, even in cases where the print data to be generated is 12 colors data or similarly large data. More specifically, with quantization by error diffusion, binarized image data for 12 colors is obtained by causing an image processing circuit that executes 6 colors quantization processing to operate twice. At this point, RAM realized by DRAM with comparatively slow operating speeds, for example, is accessed for error data diffused to a first raster and error data diffused from a last raster. In contrast, an error buffer realized by SRAM inside the image processing circuit with fast operating speeds is accessed for all other error data. Thus, as a result, memory access speeds for reading out and writing error data can be improved overall.

Abstract: Disclosed is an image processing apparatus and a method of controlling the same. A color contact image sensor (CIS) module employing a single channel line sensor can be used to produce substantially the same performance as a color CIS module employing a three-channel line sensor and having color filters to, for example, reduce manufacturing costs. Moreover, a blurring phenomenon that can occur in a scanned image can be reduced and the quality of the scanned image can be improved.

Abstract: A system and a method for implementing an automatic color plane misregistration (CPR) calibration procedure on a printing device are provided. The system includes a printing device. The printing device includes a user interface configured to receive a set of user inputs corresponding to parameters of a desired print project. The printing device also includes an automatic CPR calibration component configured to automatically implement a CPR calibration procedure in response to a user-defined trigger condition being met. The user-defined trigger condition can be programmable and stored in a memory.

Abstract: In a method or system for trapping print data with a plurality of respective objects, the objects being individually transferred into a bit map pixel file, at least one overfill is determined for the respective object relative to color regions bordering the respective object in the pixel file according to predetermined trapping rules. The object and the at least one overfill are inserted into the pixel file, wherein the object and the overfill are rastered in the pixel file upon insertion.

Abstract: A hand-held printer is disclosed. The hand-held printer includes an image sensor configured to determine a color having plurality of color components associated with a print medium, an image processing module configured to process image data into a plurality of color layers; and a print module configured to receive information related to the plurality of color components from the image sensor and information related to the plurality of color layers from the image processing module. The print module being configured to enhance at least one of the plurality of color layers based on at least one of the corresponding plurality of color components associated with the print medium.

Abstract: Methods are described that provide dynamic anaglyph images with a first appearance state and a second appearance state. At least one mutable colorant and at least one non-mutable colorant are selected for a colorant type map so that the printed dynamic anaglyph image has a first appearance state in which the at least one mutable colorant is in the first colorant state and is color matched to at least one of a left eye information and a right eye information and so that in the second appearance state printed the mutable colorant is in a second colorant state in which the at least one mutable colorant provides a color that spectrally overlaps a spectral filter in one eye of a pair of stereo color glasses so that three dimensional effects can be perceived.

Abstract: An image processing apparatus includes the following elements. A characteristic value calculator calculates characteristic values of a preset area set around a pixel of interest. A trapping determining unit determines, for each color plane of an N-valued image, on the basis of the calculated characteristic values, whether the pixel of interest is to be subjected to trapping processing. A pixel value calculator sets, for each color plane, a position of a reference pixel in a reference area, and calculates a pixel value for changing the pixel value of the pixel of interest on the basis of a pixel value of each color plane at the position of the reference pixel. A pixel-of-interest value changing unit changes the pixel value of the pixel of interest into the calculated pixel value when the trapping determining unit determines that the pixel of interest is to be subjected to trapping processing.

Abstract: Method of determining a color gamut of a predetermined print system, comprising determining ink restrictions of the print system, generating all NP states of the print system, generating a convex hull of area coverages of NPs that do not exceed said ink restrictions, determining which NP states are outside of the convex hull, mapping NP states that are outside of the convex hull onto the convex hull, re-expressing the mapped NP states as area coverages of NPs, and sampling the convex hull in a colorimetrically predetermined way.

Abstract: In an implementation, conversion of K-only data from a source CMYK color space to a destination CMYK color space is managed. The destination CMYK color space is transformed to a virtual RGB color space, in which a neutral axis of the virtual RGB color space is set to be mapped to destination K-only output colors in a color separation table for mapping of source K-only grays to destination K-only grays. The source CMYK color space is converted to a device independent color space and the conversion is adjusted such that the source K-only grays are forced to have the same chrominance as the neutral axis of the virtual RGB color space in the color separation table. The LUT is generated to include a K-only mapping by combining the virtual RGB color space with the adjusted conversion of the source K-only grays.

Abstract: A method and system implementing the method for color pixel counting in images by determining color pixels that, upon marking, appear as visibly color or gray to the human eye by applying a 2-dimensional filter and a reverse color lookup process. An area color computation is performed on a window around each pixel of interest to determine average gray level values for output colors (C, M, Y). Gray line values for each output color are determined and the values for at least two output colors are compared to the average gray level values. If average gray level value for both colors is within a tolerance for the gray line, the pixel is determined as visibly gray. Otherwise, if at least one count is not within the tolerance, the pixel is determined as visibly color. The count of visibly color pixels can be used to determine the billable color pixel count.

Abstract: There is a problem in that when magnification chromatic aberration correction is carried out, the difference in reproducibility of high-frequency components, depending on the spatial position, between a color for which position shift correction is not performed and a color for which position shift correction is performed may influence the image quality of an output image. In order to perform magnification chromatic aberration correction, high-frequency components, which are lost due to the position shift correction of a color for which position shift correction is carried out, are extracted from a color for which position shift correction is not carried out, and are added to the color for which position shift correction is carried out. Therefore, the high-frequency components are restored in a pseudo manner.

Abstract: An image processing apparatus includes a dense-light color decomposition unit that decomposes, into dense and light color components, elementary color components out of elementary color components in first print image data in a color space of a printer, in order to generate dense-light color decomposed second print image data, a converter unit that converts the color value represented by the combination of the elementary color components in the color space of the printer into a color value represented by a combination of elementary color components in a color space of a display, and supplies the color value as a conversion result to the display, and a supplying unit that extracts, from the print image data, a color component selected as a target of composite display from among the color components and supplies the extracted color component to the converter unit.

Abstract: Disclosed are methods and systems of printing an image encoded with an IR watermark on a substrate. According to an exemplary method, an effective gamut is used to render the image, wherein the effective gamut is formed by the intersection of a first and second gamut associated with producing a constant IR response.

Abstract: An image processing apparatus for performing filling processing for input image data, comprises: a holding unit which holds, for a block formed from a predetermined number of pixels included in the image data, a representative color of the block generated by compression, a color layout of pixels included in the block, and an interpolation color which is a color other than the representative color included in the block; and a fill unit which performs filling processing of the compressed image data using the representative color, the color layout, and the interpolation color, when filling the block of the compressed image data with a specific color, the fill unit replacing the representative color corresponding to a position based on a type of the filling processing with the specific color and replacing the interpolation color with the same specific color as that of the representative color.

Abstract: A method (199) is disclosed for modifying colors of text extracted from an image of a document page to improve visual quality. The document image comprises text and image regions of various colors. The method divides (100) the document image into a plurality of connected components, the connected components comprising pixels of similar color that are closely spatially located, and selects from the image a plurality of the connected components that represent text. The plurality of text connected components are grouped to form a logical structure grouping of said page comprising one or more text blocks wherein each said text block represents a text line or paragraph. One or more logically consistent color sets are then formed (120, 699, 399, 499) for each text block based on the colors of the connected components in the text block. The logically consistent color sets represent all text of visually similar color of the corresponding text line or paragraph.

Abstract: To provide an image processing device and an image processing method capable of analyzing a code image on a document regardless whether it is a black-and-white document or a color one even when a mode is set in which “scanning is performed in a black-and-white scan mode and black-and-white image information acquired by the scanning is transmitted to a printing device”. Based on an instruction from a controller part, the scanner part acquires black-and-white image data and color image data for the detection of a color code image and transmits them to the controller part. The black-and-white image data is transmitted using bits 7 to 0 of an image data bus and the above-mentioned color image data is transmitted using bits 23 to 16 of the image data bus. The controller part analyzes a code image in the document based on the image data transmitted from the scanner part.

Abstract: An image processing apparatus including: a determining unit that performs determination so as to determine a color mode of a target image in a color mode order, in a page unit; and a subtracting unit that calculates a subtraction total number of pixels, wherein, the determining unit performs the determination of a first color mode in the color mode order based on a pixel ratio of a number of pixels of the first color mode in the color mode order to a total number of pixels, and the determining unit performs the determination of the second or subsequent color mode in the color mode order based on a pixel ratio of a number of pixels of the second or subsequent color mode in the color mode order to the subtraction total number of pixels calculated by the subtracting unit.

Abstract: A method and system for generating a cartoon are provided. The method includes receiving a digital image for processing at a server. The method includes executing a color structure coding procedure to produce a color-reduced interim image. The method includes generating a sketch from the digital image with a Difference of Gaussian procedure. The method includes combining the color-reduced interim image and the sketch into a processed cartoon.

Abstract: An image processing apparatus of the present invention includes a color matching section for performing, on monochrome or two-color image data to be supplied to an image display device, a color matching process of reducing differences in color from a single- or two-color image to be outputted by an image display device, and as such, can display a comfortable preview of a single- or two-color image data by reducing differences in color between an image to be previewed and an image to be actually printed.

Abstract: Haptic security features, which are generally not visually perceptible or reproducible, are applied on a surface of a substrate according to a predetermined scheme. The haptic security features are complemented by visual features that bear a relationship to the haptic security features, and/or otherwise to features of an underlying image that is already printed on the substrate. One or more colored ink layers that includes characters or other features that bear a relationship to the haptic security features is embedded into the haptic security features on the surface of the substrate to form a composite security feature that has visual information as well as haptic response. Haptic security features are based on redundantly encoding features that are pre-printed on the substrate in a preliminary step of forming a visual image on the substrate by overprinting portions of the underlying pre-printed image related to the haptic security features.

Abstract: An image processing method determines a number of smoothing times Stime so that the number of times, at which the corrected tone values will be modified, increases as the amount of modification, by which the corrected tone values are required to be modified, increases; and modifies the corrected tone values by dividing the modification amount by the number of smoothing times Stime so that the actual printing characteristics R[i] predicted to be actually obtained approach the ideal characteristics T[i] in steps of the smoothing times Stime. Therefore, the image processing method can prevent an abrupt change in the characteristics of printed color density levels before and after the corrected tone values are modified, even when the modification amount of the corrected tone values is large.

Abstract: A color management system is provided for enabling imaging of selected colors called spot colors that document dynamically adjusting the normal printer gamut to achieve extended colors. Developed mass may be increased or decreased by changing set points such as a photoreceptor roll charge, development bias or raster output scanner laser power.

Abstract: A system and method are provided for determining a color palette model from an image of a document. Pixel values of the image of the document are clustered to provide image clusters. Color layers of the image are determined, each color layer corresponding to an image cluster. Aspects of the color palette model can be determined using the color layers. Aspects of the color palette model include a foreground-background color pair for a content block in the document and a background-area color of the document.

Abstract: Methods, systems, and arrangements enable the maintenance of driver settings when upgrading from an old driver having a first name to a new driver having a second different name. In certain described implementations, a driver upgrade is effectuated by first ascertaining driver settings for a peripheral and then upgrading a driver for the peripheral to an upgraded driver by replacing the former with the latter. After driver replacement, the driver settings for the peripheral are reestablished despite that the driver replacement entails changing driver names. Exemplary implementations may be directed to updating printer drivers in Microsoft Windows® operating system environments. Exemplary implementations may also include driver upgrading using an installation utility or driver upgrading using a new driver.

Abstract: Provided is a video signal generation apparatus and method that may minimize crosstalk between a luminance signal and color difference signals. The video signal generation apparatus may generate the luminance signal using a nonlinear Y signal and then generate color difference signals using a nonlinear XYZ signal to maximize a de-correlation characteristic between the luminance signal and the color difference signals.

Abstract: A pixel interpolating device includes a cycle calculation unit and an interpolating unit. The cycle calculation unit calculates a cycle in change of pixel values of pixels in a document image obtained by reading a document by first and second photoelectric conversion element arrays each having a plurality of photoelectric conversion elements. The interpolating unit extracts from the pixels such pixels that an interval between each pixel and an interpolated pixel corresponding to a position between the first and second photoelectric conversion element arrays corresponds to the cycle calculated by the cycle calculation unit. The interpolating unit interpolates a pixel value of the interpolated pixel based on pixel values of the extracted pixels.

Abstract: Disclosed is a color conversion method, the method including the steps of (a) converting a color using an approximation technique, and (b) correcting an error of the color using a preset error correction table containing information regarding a difference between a color channel based on an original conversion formula and a color channel based on the approximation technique.

Abstract: An image processing apparatus includes: a first image processing unit that carries out first image processing on image data depicting a first image; a first determination unit that determines whether the first image is a chromatic image or an achromatic image; a determination control unit that determines whether the second image is a chromatic image or an achromatic image based on at least one of two results, between which one is a result of a determination whether a second image serving as a target of second image processing to be performed after the first image processing is a chromatic image or an achromatic image, and the other is a determination result determined by the first determination unit; and a second image processing unit that carries out the second image processing on the second image based on a result of the determination control unit.

Abstract: According to embodiments, an image reading apparatus and an image reading method are disclosed. The image reading method comprises receiving a signal of an image color of an image on an original, and based on the received signal, controlling an illuminating section comprising a red light source, a green light source and a blue light source so that one of the red, green and blue light sources is turned off, while the remaining light sources are turned on. The image reading method further comprises receiving, on an image sensor, light from the turned-on light sources that is reflected off of the original, and processing the light received by the image sensor to form a monochromatic image.

Abstract: Color values of output colors reproduced based on output values corresponding to input values of grid points in an input color space, which are obtained by sampling a range of the output values, are estimated. Changes between a color value estimated in correspondence with an input value of a grid point of interest and color values estimated in correspondence with input values of adjacent grid points, changes between an output value of the interest point and output values of the adjacent points, and changes between a plurality of color values estimated in correspondence with input values to the interest point in association with different light sources are evaluated. When the input value of the interest point, whose a sum of evaluation values of these evaluations is less than a threshold, is obtained, an output value corresponding to that input value is set in the interest point.

Abstract: A signal processing apparatus and method for processing N-dimensional signals where N is an integer not smaller than 4 are disclosed. The signal processing apparatus includes a memory unit that stores reference values corresponding to combinations of each component of the N-dimensional signals; the memory unit has (M+1)×2N?M sub-memories which respectively store each part of the reference values divided into (M+1)×2N?M, where M is an integer smaller than N. A reading unit reads the reference values from the memory unit.

Abstract: What is disclosed is a novel system and method for xerographic Dmax control based upon measurements made on the printed paper using an inline spectrophotometer (ILS) or similar device. The disclosed method is based upon directly measuring the color to actuator sensitivity. Each of the separations is controlled independently using an actuator specific to that color separation. The present method is effective at controlling the color of the solid primaries. The fact that the vector of change is highly correlated with solid color variation seen in the field suggests that the teachings hereof effectively increase the solid color stability. Increased solid color stability increases the color stability throughout the printer gamut and the stability of the gamut boundaries, which increases the robustness of gamut mapping algorithms. Advantageously, the present method can be combined with existing ILS-based maintenance architectures.

Abstract: Provided is a method for automatically determining an error of a user operation or a colorimeter caused when the colorimeter is manually slid to measure the colors of color patches on a row-by-row basis. Also provided is a method capable of determining an error or a scanning direction using a feature value obtained from the colorimetric values without using fixed reference and threshold values for each patch.

Abstract: At least certain embodiments of the disclosures relate to methods and data processing systems for matching a source profile to a destination profile. In one embodiment, a method includes providing a destination test chart and a corresponding first source test chart with each test chart having color patches. The method includes adjusting the source profile to substantially match a known or an unknown destination profile in response to receiving an input for visually matching an adjustable white color patch of the first source test chart to a corresponding white color patch of the destination test chart. The method includes progressively generating a second source test chart having modified at least some and possibly all color patches compared to the first displayed test chart based on applying a first transformation to the source profile in response to visually matching the white color patch.

Abstract: An automated method for extracting highlighted regions in a scanned text documents includes color masking of highlight regions, extracting text from highlighted regions, recognizing the characters in extracted text optically and inserting the recognized characters to new document in order to easily identify highlighted text in scanned images. Using a two-layer multi-mask compression technology configured in a scanned export image path, edges and text regions can be extracted and together with the use of mask coordinates and associated mask colors, all highlighted texts can be easily identified and extracted. Optical Character Recognition (OCR) can then be utilized to appropriate summarization of different extracted highlighted texts.

Abstract: An overflow suppression technique that is effective for avoiding degradation in image quality is provided. A fundamental waveform and detail is extracted out of an input RGB signal. A suppression gain generation unit 614 generates a suppression gain from the extracted fundamental waveform. Multipliers 612a and 612b multiply the detail and the fundamental waveform by the generated suppression gain, respectively. Then, an adder 626 combines them together for a mixed output. Alternatively, equalization processing is performed as follows. A low frequency component fundamental waveform is obtained as a result of the passing of an input RGB signal through a low pass filter 622. A suppression gain is generated from the low frequency component fundamental waveform. Then, the input itself is multiplied by the suppression gain to obtain an output.

Abstract: An image reading apparatus includes: a light source to illuminate an original; a color sensor and a monochrome sensor to receive light reflected from the original illuminated by the light source to output an image signal; an amplifier to amplify the image signal from the color and monochrome sensors; a reflective reference member; and a control circuit to adjust a gain of the amplifier amplifying the image signal from the color sensor that receives light reflected from the reflective member illuminated by the light source, and holds the adjusted gain as a gain setting value for the color sensor, and the control circuit obtains a gain setting value for the monochrome sensor by calculation based on the gain setting value for the color sensor.

Abstract: When a lightness level expressed by a selected pixel value is equal to or larger than a threshold, the use amounts of respective color materials of a first color material group, and those of respective color materials of a third color material group are stored in a memory in association with the selected pixel value. On the other hand, when the lightness level expressed by the selected pixel value is smaller than the threshold, the use amounts of respective color materials of the first color material group, and those of respective color materials of a second color material group are stored in the memory in association with the selected pixel value.

Abstract: An apparatus, method and medium outputting a wide gamut space image in which one or more parameters that are needed to convert an existing color space into a wide gamut space are experimentally determined and then are applied to an image. The apparatus includes a feature extraction module to extract one or more feature differences between a standard gamut and a wide gamut of an image, a color range setting module to set a hue range according to the extracted feature differences and one or more experimentally determined parameters, and a conversion module to convert the image according to the extracted feature differences, the experimentally determined parameters, and the hue range.

Abstract: A system and related method for selectively printing color content of a page with a reduced color gamut are provided. The system includes a detection module, a printing mode module, and a conversion module. The detection module is configured to detect a color object in the page and the printing mode module exists in at least one mode. The conversion module can selectively convert the detected color object to a converted reduced-colorant object in accordance with the existence of the at least one mode of the printing mode module.

Abstract: The present invention provides a print module, an information processing device, a print system, a print unit, an ink supply unit, a print method and program, all capable of quickly and easily meeting demands for a print medium size change, particularly to increased sizes, while at the same time coping with demands for faster printing speed. To this end, this invention constructs the print heads (811) in the form of print modules (M) so that their ink systems and signal systems are independent among the print modules. Each print module is set with identity information for its identification.

Abstract: Embodiments of the present invention provide apparatuses and methods for determining usage maps in handheld image deposition devices. The utilization of usage maps in combination with color planes may facilitate the output of varying levels of intensity. Additionally, the storage of processed images and the print data associated with various image locations of the processed image, according to a consistent offset of memory addresses, may expedite retrieval of print information.

Abstract: An apparatus includes: a scanner to scan an image; a first determiner to determine an attribute of a feature of the image; a processor to perform a first processing on data representing the image; a storer to store the data subjected to the first processing; a receiver to instruct to output the image represented by the data stored and to receive an input for deciding an output image to be output of the image; a decider to decide, according to the input received, the output image; a second determiner to determine an attribute of a feature of the output image; a reliability determiner to determine, in accordance with the input, whether the attribute determined by the first and/or second determiner is reliable; and a processor to output, by performing a second processing on the data, output data representing the output image, in accordance with a result of the reliability determination.

Abstract: There is provided an image signal processing apparatus, comprising a demosaic processing unit receiving input of mosaic image data of each of signals obtained by a single plate imaging device having an element array composed of visible light obtaining elements obtaining visible light signals, and invisible light obtaining elements obtaining signals including invisible light components, and generating a demosaic image of each of the obtained signals; and a noise reduction processing unit receiving input of the demosaic image to execute correction of pixel values of the demosaic image obtained by the visible light obtaining elements on the basis of edge information extracted from the demosaic image of the signals obtained by the invisible light obtaining elements.

Abstract: What is disclosed is a novel system and method for banding defect detection in user document images to improve image quality trend analysis in multifunction digital imaging system architectures. The present banding detection process uses region-based, time sequence analysis, and graylevels of image regions in a collection of a sequence of regions, to improve banding detection. The present method independently analyzes the colorant separations to detect banding due to sources that are colorant-dependent, e.g., due to a single developer housing. This identification can be performed in the presence of multiple banding defects.

Abstract: An image scanning apparatus is provided. The image scanning apparatus includes a user interface unit receiving a color to be removed during a scanning operation, a scanning unit scanning an original copy by using a color-changeable light source, a storage unit storing the scanned image of the scanned original copy and a control unit controlling the light source to output a color corresponding to the received color onto the original copy.

Abstract: Systems and methods for generating a dynamic re-configuration with a DFE imager and caching modules to optimize RIP performance by analyzing pages within the job that collect page with job heuristics and statistics. Enabling the functionality to assess the information, thereby re-configuring a digital printer's imager and caching module dynamically during the job RIP to achieve improved overall RIP performance. Accordingly, a system collects and assesses job statistics across multiple jobs to enable optimum performance over time.