Xerox Corporation

Other

Michael Thomas Stevens

Meng Yao

Paul W Philippi

Mark Raymond Parker

Jeremy Griffith

Michael Dale Stevens

Brian Robert Glass

Kenneth Carlton Peterson

Jeffrey G Murphy

Methods and a system for a natural language control interface are provided to enable a user to modify various properties of a document. The modifications comprise building sentences from modification words, and combining them together in one display. The modifications are displayed in real time for a user to observe as they are inputted. The order of the modifications is managed by the user and is configured to be changed, added and/or removed.

Human readable sentences to represent complex color changes

A method for adjusting the color of an image is provided. The image includes a plurality of pixels. The method includes receiving a natural language command to adjust a selected color of at least a portion of the image; determining a selection value for a pixel of interest by comparing a location of a color of the pixel of interest within a color space to a plurality of planes defining a multi-dimensional boundary of a portion of the color space corresponding to the selected color; and adjusting, based on the natural language command, the selected color of the pixel or the pixels of at least the portion of the image determined to be within the portion of the color space corresponding to the selected color. The selection value is representative of whether the pixel of interest lies within the portion of the color space corresponding to the selected color.

Selecting blended regions of color space

What is disclosed is a system and method for mapping an out of gamut RGB color to a surface of a color gamut in RGB space. A point xhaving {RGB} values in RGB space is identified which is outside a surface of a color gamut of a target device. A lightness value &#x3b3; and a chroma vector {right arrow over (C)}=[C, C, C] are determined from the {RGB} values of the identified point. A minimum and a maximum saturation are determined for point x. A new lightness value &#x3b3;' and a new chroma vector {right arrow over (C)} are calculated based on the minimum and maximum saturation values, in a manner as is described herein in detail. The new lightness &#x3b3;&#x2032; and the new chroma vector {right arrow over (C)} are converted back into {R&#x2032;G&#x2032;B&#x2032;} values. The {R&#x2032;G&#x2032;B&#x2032;} values are provided to a gamut mapping function.

Mapping an out of gamut RGB color to a gamut surface

What is disclosed is a novel system and method for emulating transparency in a PostScript-enabled image forming device, such as a PostScript-enabled print device. The present system and method uses Adobe's DeviceN color space to support transparency printing on PostScript-enabled devices. The present method uses abstract data represented by a color plane in DeviceN space to indicate the existence of a transparency layer in the image to be printed. An emulation procedure is then called to perform a color space transformation and to perform color blending of the first image into the second image. A transparency value is used as one of the colorant channels to define the blending. Advantageously, the present method is backward compatible as there is no update required to the printer's driver or firmware. The present method has been demonstrated to work with Adobe Reader and PostScript Level-3.

Printing graphics with transparency on a postscript enabled image forming device

A method of operating a color printer including using a first set of one-dimensional TRCs or a second set of one-dimensional TRCs with a single set of color tables.

Color printing

A method for processing image data includes receiving image data including an assigned color space, comparing the assigned color space of the image data to a known color space, and processing the image data using the known color space in place of the assigned color space if the difference between the known color space and the defined color space is below an acceptable threshold. The method is particularly suited for use with Adobe&#xae; PostScript&#xae; applications.

Color control of PDL CIE color

Image processing systems and methods are presented for encoding 8-bit color image data to 4-bit data using an encoding table by assigning a pixel type value to each 8-bit pixel according to a 9&#xd7;3 tiling pattern with 9 unique pixel type values in each 3&#xd7;3 window of the 9&#xd7;3 tiling pattern, and for decoding the 4-bit image data based on the pixel type value and the encoded data values for neighboring pixels.

Systems and methods for image data encoding and decoding

Present systems and methods enable digital color printers to consistently print color output from computer generated image data that includes spot color definitions. Colors that are defined as spot colors can be separated from colors that are defined as combinations of process colors. Accordingly, color corrections can be separately applied to objects that are defined by spot color definitions to provide customized image processing that provides printed color images with improved quality.

Database system for processing image data for consistent color printing

Document processing systems and methods are presented for transforming color image data from an input color space to output color space using space filling interpolation to mitigate loss of color information at the corners of color gamuts. An initial interpolation of the input color space pixel values for each pixel is performed to compute initial output color space pixel values, and these are converted into luminance-chrominance color space pixel values. An adjustment value &#x3bb; is then computed according to the luminance-chrominance color space pixel values, and final output color space pixel values are computed according to the initial output color space pixel values and the adjustment value &#x3bb;.

Method and system for improved space filling interpolation

A method, system, and computer program for generating a visual representation provides the capability to illustrate the various combinations of settings quickly and efficiently. A method for generating a visual representation comprises providing a plurality of predefined visual representations, accepting a plurality of values of a plurality of parameters, and generating a visual representation representing effects of the parameters based on the predefined visual representations and on the values of the parameters.

Abstract parameter print mode mimic generation

What is disclosed is a novel system and method for performing renormalization in a data entropy reduction process of an image in a compression path. An accumulator is used for one of arithmetic encoding and decoding according to an arithmetic coding process and a number of most significant bits of the accumulator represents an output segment. If processing an input data symbol is determined to be able to cause a change in a value of the output segment, the encoding range is changed. If the size of the encoding range portion that can cause the output segment value to change is less than the size of the portion of the encoding range that fails to cause the change, the encoding range is limited to the size that can cause the change. Otherwise, the encoding range is set to the size that fails to cause the change.

Range normalization for entropy reduction arithmetic encoding/decoding

Processing image data for consistent color printing

Dynamic Color Render Dictionaries are provided to automatically switch color rendering behavior between object types. The implementation resides entirely within the Color Render Dictionary (CRD) and require no changes to the state of the Postscript interpreter (There are no required 'C' code changes and Postscript operator redefinitions.) The different color rendering behaviors are accomplished by concatenating multiple color transform tables into a single/RenderTable within the CRD. The different rendering behaviors are accessible to single graphics state by simply accessing different regions of the /RenderTable. By having the color rendering behavior 'switch' without changing the graphic state makes the implementation very fast. Since the entire implementation is limited to the Color Rendering Dictionary, dynamic CRDs may be implemented on any existing Postscript printer. Even on ones that have been in the field for years.

Dynamic color rendering dictionaries

Differentiating between image and graphic objects contained within a Color Rendering Dictionary improves printing efficiency. The differentiation between image and graphic objects is accomplished by monitoring the sequence in which Color Rendering Dictionary procedures are executed. Based on the monitored sequence, an image or graphic object is determined to be used for rendering.

Detecting graphics in color rendering dictionaries

A color device profile including a buffered color look-up table having outermost nodes that replicate nodes of an inner portion that are closest to the outermost nodes, and input tonal reproduction curves having a range that is smaller than an input range associated with the buffered color look-up table and greater than an input range associated with the inner portion.

Growing community of inventors

Aloha, OR, United States of America

Michael Thomas Stevens