Xerox Corporation

Other

Xing Li

Clara Cuciurean-Zapan

Sainarayanan Gopalakrishnan

Francis Kapo Tse

Ramesh Nagarajan

Amal Z Malik

Rajasekar Kanagasabai

Zhenhuan Wen

Yingjun Bai

Peter D McCandlish

David Jon Metcalfe

Sudhagar Subbaian

Vignesh Doss

Dhevendra Alagan Palanivel

Ryan David Metcalfe

Michael E Meyers

Barbara Lynn Farrell

Meng Yao

Ammal Malik

Stuart Alan Schweid

Aron Nacman

Roger Lee Triplett

Arindam Das

Terri A Clingerman

Ranita Bej

Theresa Michelle Marconi

Mihai Cuciurean-Zapan

John C Handley

David Jordan Lieberman

Daniel A Mohabir

Gene M Nitschke

John F Seward, Jr

John Adam Handwork

Anthony Paul Lanza

André M Blaakman

Sherry W Zhang

Jeng-nan Shiau

John Allott Moore

James Bruce Campbell

Michael Dale Stevens

Nancy R Kelly

Apurba Das

Lee Roche

Robert P Robideau

Biruk Gossaye

Yungran Choi

William David Notovitz

William L Yeoh

Gregory B Marshall

Sunil Kumar

Paul W Phillippi

Pravin Jogdand

Sainarayanan Gopalkrishnan

Richard James Eddy, Jr

Yongyi Ye

Chao Yu

Ammal Z Malik

A computer-implemented method and system for processing a document page is based on text and non-text detections in an image path. An object block is generated for each image content identified within an input page. the blocks are extracted from the input document for downstream processing. Then, the object blocks are classified based on whether the content is text or non-text. The extracted non-text objects&#x2014;which are specified by their bounding boxes&#x2014;are processed separately from the rest of the content. The processing is performed on the text content blocks in parallel. However, when error diffusion is employed, the error diffusion is performed sequentially on the non-text content blocks to avoid stitching artifacts between individually error diffused patches in non-text areas.

Performance improvement with object detection for software based image path

In an embodiment, a method of rendering an infrared mark, can involve providing an image path for an image processing apparatus, wherein the image path integrates infrared mark related functions with regular image processing functions of the image processing apparatus, and rendering the infrared red mark with the image processing apparatus, after subjecting the infrared mark to the infrared mark related functions in the image path of the image processing apparatus.

Image path that supports device based infrared mark imaging

A method is disclosed. For example, the method is executed by a processor of a multi-function device (MFD) and includes receiving a desired transparency level for an annotation image to be added to a canvas image, applying a transparency factor based on the desired transparency level to a transparency output function and an opaque output function to calculate an output value for each pixel of the canvas image that overlaps a pixel of the annotation image in a color space associated with the MFD, and generating an annotated canvas image that includes the output value that is calculated for each pixel of the canvas image that overlaps the pixel of the annotation image.

Method and apparatus to add annotations to an image

Methods and apparatuses receive, into a user interface, an instruction to combine multiple scanned pages into one or more n-up sheets. In response to receiving the instruction to combine multiple scanned pages, a resolution field is output from the user interface. A user-set resolution for the scanned pages on the n-up sheets is received into the resolution field. With this, the scanned pages are scanned at the user-set resolution using a scanner. A processor is used to combine the scanned pages together into the n-up sheets at the user-set resolution of the scanned pages resolution, and the processor outputs the n-up sheets in an electronic file.

Providing user control of resolution and file size for n-up scanned files

A document processing system produces a digital representation of an original image by determining a background level for white space of the original image. Using the background level, the system identifies pixels not belonging to the white space. The system generates a binary image of the original image based from the identified pixels. The system then identifies image content surrounded by the white space in the original image using the binary image. Next, the system generates a block for each image content and extracts each block from the original image. After processing each block, the system reapplies the processed blocks to a blank canvas to generate the digital representation.

Method to improve performance in document processing

A system and method for tile type based color space transformation improves the performance and image quality of multifunction devices. The disclosed embodiments transform an input image on a tile by tile basis. If a tile is detected as neutral, simple 1D L* to CMYK Tone Reproduction Curves or Look-Up-Tables are used to convert the input pixels of the tile in L*a*b* to output pixels in CMYK. If a tile is detected as containing color content, then the input pixels are chrominance adjusted and subsequently converted to CMYK using regular tetrahedral interpolation.

Tile based color space transformation

A method and system for an auto-color detection and color transformation is provided including with at least one image signal processor, splitting an input image into a plurality of strips on a page. Each strip is composed of a plurality of pixels. The presence of color data within a strip is determined. Based on a determination that no color data is present within the strip both a monochrome rendering and a simple color rendering of this neutral strip are generated. Based on a determination that color data is present within a strip, the entire page is declared a color page and either one of a simple color rendering (via 1D look up tables) or a complex color rendering (via tetrahedral interpolation) of the strip is generated. Thereafter, only color renderings of subsequent strips is performed for the corresponding page.

Auto-color copy in software based image path

A computerized device has a computer interface configured to display a remote scan job menu for at least post-scanning processing options for scan jobs within scan job queues. A scanning device is configured to receive at least one of the scan jobs in at least one of the scan job queues. The scanner interface of the scanning device is configured to display at least one of the scan job queues and to receive selection of one of the scan jobs from one of the scan job queues to identify a selected scan job. The scanning device is configured to execute the selected scan job, by scanning items provided to the scanning device, to produce an electronic image file. The scanning device is also configured to process the electronic image file by performing post-scanning processing options within the selected scan job on the electronic image file.

Remote post-scanning workflow using scan job in scan job queue

An image compression method includes compressing an input image with first and second compression methods to generate first and second (e.g., lossless and lossy) compressed images. First and second residual layers are generated, based on a difference between the first and second compressed images. Connected components in the residual layers are identified. Each connected component includes a group of one or more pixels that, when mapped to the second compressed image is connected, in first and second directions, to pixels in the second compressed image. A compressed image is generated, which includes, for a connected component identified in the first residual layer, removing corresponding pixels from the second compressed image, and for a connected component identified in the second residual layer, adding corresponding pixels to the second compressed image. The system and method can thus provide file size savings associated with lossy compression while avoiding character replacement.

Method and system for image compression

Methods and systems for thickening an interior region of a fill object are described. The method includes receiving a print job including an input image, and converting into a digital bitmap image comprised of an array of pixels, each pixel being assigned with a pixel value and an object tag information. Based on this, each pixel is defined as one of a boundary pixel of the input image, an edge pixel of the fill object in the input image, and an interior pixel of the fill object. Thereafter, the fattening of the edge pixels of the fill object, is followed by the fattening of the interior pixels of the fill object, for applying thickening to the interior region. After this, an output image is generated.

Methods and systems for thickening an interior region of a fill object

A system and method for generating a mixed raster content representation of an input image. An input image is segmented into image and text layers. Connected component analysis is performed on the image layer, with each group of connected pixels labeled. For each group, an average color is determined and when a mask layer exists for the color, the pixels in the group are enabled in the mask layer. When a mask layer does not exist for the color, a new mask layer is created and the corresponding pixels enabled. The image layer is then removed and the mask layers are combined into the text layer, whereupon a text only MRC compression file is output.

Scheme for text only MRC compression

Methods and devices to improve the quality of graphics objects based on adaptive stroke thickening are disclosed. The method includes receiving a graphics object having at least one stroke. The graphics object is represented within an object window made of a plurality of cells. The method further includes identifying a fill region being defined by the stroke. Both the fill region and the stroke are represented by a group of cells. The identified fill region is tagged using a predefined flag indicating a tagged fill region or any its attributes. The stroke is strengthened unidirectionally away from the tagged fill region, where a stroke color associated with the stroke being strengthened is replaced by an adapted color provided the stroke color is same as a background color associated with a background, which is a part of the object window.

Methods and systems for adaptive stroke thickening of graphics objects

An electronic image in a first color space, used by image acquisition devices, is obtained and converted into a second color space with a larger gamut, to produce a second color space image. Corrections are made to the second color space image to produce a corrected image, without performing background suppression. The corrected image is converted into a third color space, used by printing devices, to produce a third color space image, and this process of converting the corrected image into the third color space includes performing background suppression. This process of converting the corrected image into the third color space samples nodes of the second color space values, classifies the nodes as background nodes or non-background nodes, multiplies the second color space values of the background nodes by a percentage less than 100%, and after multiplying, interpolates values between the nodes.

Document background suppression performed during color space conversion

Methods and devices to improve the quality of graphics objects based on adaptive stroke thickening are disclosed. The method includes receiving a graphics object having a stroke, where the stroke defines a fill region. The received graphics object is identified as a fill object based on the stroke including a first cell of a stroke color being different from a fill color of a second cell associated with the fill region. The stroke color and the fill color are compared with a background color of a third cell associated with a background according to a predefined condition, where the first cell, the second cell, and the third cell are linearly adjacent to each other. Based on the comparison, an adapted color being different from the background color of the third cell is selected to adaptively strengthen the first cell, which is associated with the stroke, away from the fill region.

A method and system for segmenting text from non-text portions of a digital image using the size, solidity, and run length characteristics of connected components within the image data. For a connected component comprising a rectangular group of pixels enclosing a set of connected pixels having the same binary state, the size characteristic may be based on a ratio of height to width of the connected component and the total number of pixels within the connected component, the solidity characteristic may be based on a ratio of pixels within the connected component to a total number of pixels within a convex hull of the set of connected pixels, and the run length characteristic may be based on a number of transitions within the connected component.

System for automated text and halftone segmentation

Growing community of inventors

Webster, NY, United States of America

Xing Li