| Patent Number |
Title Of Patent |
Date Issued |
| 7620243 |
Noise reduction for primary tones for image replication systems |
November 17, 2009 |
| Systems and methods are disclosed that provide noise reduction for primary tones. In an embodiment, the systems and methods involve adjusting an input color toward a primary tone at the expense of replicating the input color according to its proper hue. The adjusted input color, when |
| 7557963 |
Label aided copy enhancement |
July 7, 2009 |
| Regions within a scanned document are labeled according to content. These labeled regions allow for particular enhancement and sharpening methods to be applied. The labeled regions may be further leveraged in subsequent rendering of the scanned document on a printer or other output devic |
| 7554575 |
Fast imaging system calibration |
June 30, 2009 |
| Systems and methods are disclosed for calibrating an imaging system comprising a processing unit communicatively coupled to one or more imaging devices. The imaging system may also include a display. In an embodiment, a sequence of display features are displayed on a display, and ima |
| 7430060 |
Fast low-memory paper color suppression algorithm |
September 30, 2008 |
| A fast, low-memory-requiring, adaptive algorithm for determining and correcting for page background color generally involves quantizing the color component values of the pixels of the scanned page, dividing the scanned color space into a set of bins, and assigning each color in the s |
| 7428331 |
Page background estimation using color, texture and edge features |
September 23, 2008 |
| An algorithm for estimating which pixels belong to the background of a scanned page. The algorithm is particularly designed to handle situations in which the page background varies in color/intensity, as is case when bleed-through artifacts from the reverse side of the page appear in the |
| 7428076 |
Smart copying for variable cost, editable printouts |
September 23, 2008 |
| Smart printing/copying techniques for controlling the printing/copying and editing of a document based on document-descriptive and control information embedded in the printed output. These "smart" printing/copying techniques and controls allow a document user to control printing/copy |
| 7355757 |
Fast edge reconstruction with upscaling for pulse width modulation rendering |
April 8, 2008 |
| A selected antialiasing technique is applied to non-labeled gray-scale or color image data by deconstructing an image into a set of binary images, applying the antialiasing method to each binary image to generate antialiased images, and combining the antialiased images to generate an |
| 7333628 |
Data embedding with multi-level screening |
February 19, 2008 |
| Digital data is rapidly embedded in color/grayscale digital data by switching between a set of multi-level screens or quantizers. Each screen can be tuned to maximize the quality of the digital data product on the intended display medium, so that the quality of the displayed product |
| 7330586 |
Low-light exposure modes for digital photo sensors with free-running shutters |
February 12, 2008 |
| Techniques for locating one or more regions of interest in a frame sequence by tracking activity at pixel locations in the sequence enables subsequent manipulation of color pixel values to achieve various interesting effects, such as time-scale filtering, color-based filtering and us |
| 7330193 |
Low noise dithering and color palette designs |
February 12, 2008 |
| Methods for choosing and combining colors from a color palette to render an image color tone are disclosed. A set of up to four palette colors are chosen and the weighted factors for combining the chosen palette to render the image color are determined. The weighted factors of the chosen |
| 7330191 |
System for secure text display |
February 12, 2008 |
| Techniques for securely displaying text on a display panel involve destroying spatial and temporal correlations in an otherwise uniform visual field. The techniques render the displayed text secure with respect to attempts to copy the text using a video capture device or still-pictur |
| 7239429 |
Method and apparatus for generating dispersed cluster screen |
July 3, 2007 |
| A method for generating a dispersed cluster screen defining a stable environment for printing an image is provided. The method initiates with generating a pattern of cluster centroids. Then a cluster growth sequence is defined. Next, a cluster is grown around the cluster centroid acc |
| 7174049 |
Image upscaling by joint optimization of low and mid-level image variables |
February 6, 2007 |
| An image upscaling algorithm jointly optimizes estimating pixel color, classifying it into one of multiple regions, and estimating region boundaries subject to region continuity and edge-configuration constraints. The joint solution of constraints at multiple levels of image abstract |
| 7085015 |
Inverse halftoning for multi-level halftones |
August 1, 2006 |
| Techniques for recovering an original image from its halftone version using information obtained from the dither matrix used to generate the halftone. The techniques involve determining a bounding region defined by (x.sub.min, x.sub.max) for each pixel location and color value, based on |
| 7032987 |
Nozzle scheduling for ink jet printing |
April 25, 2006 |
| Nozzle scheduling algorithms that provide a unified approach to designing nozzle firing algorithms that incorporate a variety of specifiable nozzle-firing constraints such as print head (nozzle) geometry, nozzle spacing, number of nozzles, head movement (number of passes), ink-media |
| 6927780 |
Fast text/graphics resolution improvement with chain-code table look-up |
August 9, 2005 |
| A fast text/graphics resolution improvement algorithm is based on boundary parameterization and uses chain-code table look-up. Given an input representation containing text/graphics objects, the boundary of each object is traced, parameterized, smoothed, and subsequently rendered. In |
