| Patent application number | Description | Published |
|---|
| 20080225342 | Method and system for encoding color images to black-and-white bitmaps and decoding color images - 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. | 09-18-2008 |
| 20080231902 | Output Pure Color Tints or Black for Full-Color Input - 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 on highlight color or only black while maintaining luminance of the original full color image. | 09-25-2008 |
| 20080260284 | Edge contrast adjustment filter - 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. | 10-23-2008 |
| 20090003689 | VARIABLE/PERSONALIZED COLORIZATION PRINTING USING TONE REPRODUCTION CURVES - 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. | 01-01-2009 |
| 20090153887 | APPARATUS FOR PRINTING CONSISTENT SPOT COLORS - 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. | 06-18-2009 |
| 20090153923 | METHODS AND SYSTEMS FOR RENDERING AND PRINTING REVERSE FINE FEATURES - 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. | 06-18-2009 |
| 20090185201 | SYSTEMS AND METHODS FOR PARAMETERIZED SPOT COLOR RENDERING - 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. | 07-23-2009 |
| 20100177355 | POST RIP TRAPPING - 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. | 07-15-2010 |
| 20110058238 | SPOT COLOR PRESS EMULATION COLOR TRANSFORMATION METHOD AND SYSTEM - 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. | 03-10-2011 |
| 20110069077 | METHOD AND SYSTEM FOR OUT-OF-GAMUT SPOT COLOR REPRODUCTION - 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. | 03-24-2011 |
