Xerox Corporation

Mu Qiao

Shen-Ge Wang

William A Fuss

Paul Roberts Conlon

Marc Rene

Robert P Loce

Wencheng Wu

Daniel W Costanza

Rakesh Suresh Kulkarni

A method for simulating a textured appearance on a uniform substrate includes using variable halftone dot orientations. A texture description is provided for generating electronic data representing a three-dimensional texture. Texture regions of the texture description are identified using pixel cells in the electronic data. Halftone dot orientations are assigned for each pixel cell based on a value of the pixel cell. The halftone dot orientation represents a recessed or a raised surface portion.

Simulated paper texture using glossmark on texture-less stock

What is disclosed is a novel system and method for preserving user-applied markings made to a hardcopy of an original document and for generating a new composite document containing the user markings which can be reprinted without loss of image quality. In one embodiment, an original document is scanned to produce a digital representation thereof. One or more marked documents containing the user markups are scanned. The user markings are identified in each of the marked document by an iterative comparison between the marked document and the image of the original document. The identified user markings are stored to records. Thereafter, the stored user markings are retrieved and combined into an image of the original document to produce a new composite document containing selected user markings. The new file is smaller in file size and has no loss of image quality during subsequent reprints. Various embodiments have been disclosed.

Preserving user applied markings made to a hardcopy original document

A method includes receiving a primary image as input data and receiving textured image data for rendering a perceived non-uniform texture on a printed output of the primary image. The primary image input data is used for determining a low coverage portion and a high coverage portion. The method then includes applying clear toner to the low coverage portion and applying colored toner at variable anisotropic orientations to the high coverage portion.

Simulated paper texture using clear toner and glossmark on texture-less stock

What is disclosed is a novel system and method for identifying and removing print defects from an original document such that user markings applied to the hardcopy originally can be more readily identified and extracted. In one embodiment, an image of an original document and a marked document are received. The original document was printed using a print device which caused a print defect in the hardcopy print. Methods for identifying the print defect in the difference image are provided herein. The identified print defect is removed from the difference image. The difference image retains the user-applied markings once the print defects have been identified and removed. The user markings can then be provided to a storage device for subsequent retrieval and added into the image of the original document to generate an image of a new marked document containing the user markings without the defect. Various embodiments are disclosed.

A system is adapted for simulating a textured pattern on a non-textured substrate. The system includes generating at least a first textured description in a controller unit operatively associated with at least one image forming apparatus. The first textured description is combined with at least one image of an original print job to generate a first print job. The first textured description is printed on at least one face of a substrate to provide a perceived first textured substrate. The at least one image is then printed on the perceived first textured substrate.

Simulated paper texture using clear toner on uniform substrate

A digital image processing method. The method includes printing a first set of reference marks on one side of a substrate with a first print engine; printing a second set of reference marks on the same side of the substrate as the first set of reference marks with a second print engine; sensing both sets of reference marks on the substrate with an image sensing unit and generating a digital image of the reference marks; performing image analysis on the digital image to obtain an image-to-image distortion map where the image-to-image distortion map is a local measure of difference between the first set of reference marks and the second set of reference marks; and generating a compensated customer image by using the image-to-image distortion map to reduce registration errors when using the first and second print engines.

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Castro Valley, CA, United States of America

Mu Qiao