Abstract: Disclosed are a method and system of rendering clear texturing on a media substrate. According to one exemplary method, one or more parameters are provided by a user, via a UI (User Interface), to control the clear texturing process, wherein the parameters are associated with, but are not limited to, media sheet area coverage, object type the clear texturing process is to be performed on and maximum/minimum percentage of clear material to be used for rendering the clear texturing.

Abstract: What is disclosed is a novel system and method for determining an amount of clear toner to be applied to a document image to improve smoothness in an output print rendered using a xerographic device capable of applying clear toner to the image in the image path. Using clear toner to improve smoothness enables a GCR strategy in which more black can be used. This, in turn, decreases the incremental cost for clear toner. The teachings hereof present attractive trade-offs for print shops specializing in color document reproduction and other customers of high-end xerographic devices capable of applying clear toner. Various embodiments are disclosed.

Abstract: A projector for masking out one or more objects between the projector and a screen. The projector includes an image capture sensor configured to produce a captured screen image. The projector further includes a processing device configured to receive a video-in signal, create a masking image that corresponds to at least a portion of the captured screen image, and produce a video-out signal, wherein the video-out signal comprises a combination of the video-in signal and the masking image. A panel controller in the projector receives the video-out signal and causes at least one or more pixels of at least one panel to be closed based upon the masking image such that any objects positioned between the projector and the screen are masked from any light projected by the projector.

Abstract: Disclosed herein is a method wherein each pixel is tagged with a special VI (Variable Information) flag, which indicates the color of the pixel is variable or fixed. When the document gets created during raster image processing (“ripping”), the output CMYK of the VI and non-VI pixels are constrained to be odd and even numbers, respectively. In the meantime, a special TRC is created, and the VI colors are obtained through this special TRC at the odd indices, while the non-VI colors are obtained through the even indices. To enable the variable colorization printing, the job needs to be ripped once and saved. The saved job then can be reprinted multiple times with different TRCs that have the same values at the even indices, but different values at the odd indices.

Abstract: What is disclosed is a novel system and method for calculating an amount of a total dilation for reverse objects in order to compensate for fill-in effects to improve quality of a digital image in a digital document reproduction system. In a manner more fully described herein, a tone-dependent compensation factor is determined which is a function of a gamma-corrected background density. The tone-dependent compensation factor is then used to scale the maximum base dilation to produce an amount of total dilation. The total dilation amount is applied to contone pixels along an edge of the reverse object to compensate for fill-in artifact effects. By adjusting pixels along the edges of reverse objects by the total dilation determined hereby, the sharpness (or crispness) of reverse fine features is improved on sweeps and for hue shifts at the edges of the reverse objects on backgrounds of more than one color separation.

Abstract: Image data representing an image is obtained, raster image processing is performed on the image data, and then trapping is performed on the image data after raster image processing. The trapping may be performed based on a tag plane generated during the raster image processing, or the determination of which pixels to trap may be performed after the raster image processing.

Abstract: A method and system are proposed in which a moving window based operator is applied to a page of a PDL document that has been decomposed, and the objects within the page flattened and rasterized. The window moves along the raster scan line, and processes rasterized data within the window, detecting any color-to-white or white-to-color interface (edge). The white rasterized portion is then dilated outward across the interface into the color portion, the dilated amount being based on a size of a reverse fine line and/or small text font character to be reproduced. A size of the fine line and/or small text font object is determined and if below a threshold, object dilation may be given effect. A dilation amount may increase as the object size decreases until the size reaches a lower threshold at and beyond which a maximum dilation amount may be applied.

Abstract: This is a system for maximizing the use of colors in cartridges of a color marking system. By controlling the amounts of each color dispensed where the least abundant color is conserved, the life of the cartridge is extended. A sensor tells the system what amounts of each colors remain in the system, and a dispenser controller uses and dispenses the most abundant colors first, preserving the least abundant color necessary to achieve a desired colored marking. GCR (gray component replacement) is used as the fundamental scheme to control the colorants. GCR-like scheme is used for interchanging a particular non-traditional colorant and multiple conventional colorants that make such color.

Abstract: A gamut mapping method and system for implementing out-of-gamut spot color reproduction, including a memory for electronically storing information related to at least one color gamut and a gamut mapping editor including a processor communicating with the memory, the processor of the gamut mapping editor (i) causing a user to be apprised that a target spot color is outside the at least one color gamut and (ii) facilitating the user's employment of one or more of a plurality of gamut mapping methodologies to select a preferred color from a plurality of mapped colors when the target spot color is outside the at least one color gamut.

Abstract: A spot color rendering system and method that incorporates spot color press emulation color transformation to preserve spot color on a target rendering device. A spot color rendering option implemented in a graphical user interface can be selected in order to render the spot color via an intermediate emulation space. The spot color name calls can be first associated with a color value in an ICC profile connection space (PCS), as CIE L*a*b* or XYZ. A database relation of the spot color name with its associated PCS numerical value enables association of the name with the resultant color transformed output. Thereafter, a color transformation with respect to the spot color value can be performed in order to compute a color on an emulation press and then the color can be preserved to the target rendering device. Such an approach enables a color consistent rendering to the target rendering device similar to that of the emulation press.

Abstract: Systems and methods are provided to provide image quality particularly with regard to rendering spot color objects in image forming devices. Input spot color objects are assessed based on an object type and one or more parameters associated with the object, to include, but not be limited to, a desired tint value. A plurality of spot color rendering mechanisms are available within the individual system and/or method. A determination is made automatically regarding which of the plurality of color rendering mechanism to be employed to enhance specific image quality based on sensed and/or obtained parameters regarding the object, to include, but not be limited to, type and/or desired tint values.

Abstract: A method and device for printing a full color image containing at least one object onto a highlight color printer without mixing highlight color and black for any one object. Inputting a full color image containing at least one object to be printed onto a highlight color printer. The highlight color printer prints each object of the full color image as an object containing only highlight color or only black while maintaining luminance of the original full color image.

Abstract: A method and system for encoding a color image into a monochrome halftoned image for printing, includes the use of a decoding mechanism to recover color information from the monochrome halftone image. A luminance channel associated with the color image can be utilized as the grayscale input to a half-toning process, while chrominance channels are utilized to determine displacements of the halftone dots. The color information can then be restored utilizing a template to measure the displacements of the halftone dots and hence the color information. Thus, the color information can be preserved without visual impact.

Abstract: Image data representing an image is obtained, raster image processing is performed on the image data, and then trapping is performed on the image data after raster image processing. The trapping may be performed based on a tag plane generated during the raster image processing, or the determination of which pixels to trap may be performed after the raster image processing.

Abstract: Apparatus are provided, which include a color image processor, an edge distinguisher, and an edge trapping mechanism. The color image processor processes color images, including a given color image. The given color image includes plural color separations each having a set of color values for respective image pixels. The edge distinguisher distinguishes some edges of the given color image as opposing edges. An edge is a transition in the color separation of the given color image from a non-white color intensity value, at one side of the edge, to a white intensity value, at the other side of the edge. A given edge is an opposing edge when a transition of the given edge goes, for a separation of the given color image, in one direction from a non-white color value to a white value, and goes, for another separation of the given color image, in the same direction from a white value to a non-white color value.

Abstract: Systems and methods are provided to provide image quality particularly with regard to rendering spot color objects in image forming devices. Input spot color objects are assessed based on an object type and one more parameters associated with the object, to include, but not be limited to, a desired tint value. A plurality of spot color rendering mechanisms are available within the individual system and/or method. A determination is made automatically regarding which of the plurality of color rendering mechanism to be employed to enhance specific image quality based on sensed and/or obtained parameters regarding the object, to include, but not be limited to, type and/or desired tint values.

Abstract: A method and system are proposed in which a moving window based operator is applied to a page of a PDL document that has been decomposed, and the objects within the page flattened and rasterized. The window moves along the raster scan line, and processes rasterized data within the window, detecting any color-to-white or white-to-color interface (edge). The white rasterized portion is then dilated outward across the interface into the color portion, the dilated amount being based on a size of a reverse fine line and/or small text font character to be reproduced. A size of the fine line and/or small text font object is determined and if below a threshold, object dilation may be given effect. A dilation amount may increase as the object size decreases until the size reaches a lower threshold at and beyond which a maximum dilation amount may be applied.

Abstract: RE A color imaging system is provided with a tagging system that tags spot color pixels in a page description language differently from non-spot color pixels. These tags are generated in a digital front end and stored along with contone values in a data structure. In addition to the tags, a rendering hint remap table and a user TRC remap table are used to bypass applying TRCs to spot colors.

Abstract: Disclosed herein is a method wherein each pixel is tagged with a special VI (Variable Information) flag, which indicates the color of the pixel is variable or fixed. When the document gets created during raster image processing (“ripping”), the output CMYK of the VI and non-VI pixels are constrained to be odd and even numbers, respectively. In the meantime, a special TRC is created, and the VI colors are obtained through this special TRC at the odd indices, while the non-VI colors are obtained through the even indices. To enable the variable colorization printing, the job needs to be ripped once and saved. The saved job then can be reprinted multiple times with different TRCs that have the same values at the even indices, but different values at the odd indices.

Abstract: Disclosed herein is a method that includes a classifier that distinguishes objects based on their color shades. A moving window based operator looks at the color class of the adjacent objects and determines if an adjustment is necessary. If at least one of the objects is the type of interest and the color classes of the objects meet the criteria, then the boundary between the objects is subject to be adjusted. Two adjustment modes are discussed: “adjust-tagging” mode and “adjust-color” mode. In the adjust-tagging mode, a specific tag is sent down to the print engine to force the use of high addressability halftones for the boundary pixels in the darker object. In the adjust-color mode, a color lighter (usually white) than that of the lighter object is assigned to the boundary pixels in the lighter object. The width of the modified pixels along the boundary is configurable.