Electronics for Imaging Gmbh

Management Graphics, Inc.

Fiery, LLC

Williams, Leon

Olson, Thor

Thor A Olson

Leon C Williams

Richard A Keeney

Leon Calvin Williams

James R Teter

J Stanley Kriz

William H Glass

Techniques for interactively determining/visualizing the color content of a source image and how the corresponding image data is mapped to device colors are described herein. For example, the color content of a digital image can be converted between different color spaces to identify gamut limitations of an output device (e.g., a printing assembly), discover color(s) that cannot be accurately reproduced, etc. Color space conversions enable the transformation of the color content of the digital image from device-specific colorants to a device-independent representation (and vice versa). In some embodiments, these transformations are facilitated using lookup tables that are implemented in graphical processing unit-resident memory.

Interactive three-dimensional (3D) color histograms

Various variable gloss reduction techniques are disclosed. In one embodiment, a gloss reduction technique is disclosed using a textured roller and a wiper impregnated with fuser oil to create a differential gloss pattern that reduces the gloss of an image printed on a substrate. In one embodiment, a gloss reduction technique is disclosed using a combination of heat and pressure to create a differential gloss pattern that reduces the gloss in specific regions of an image printed on a substrate. In one embodiment, a gloss reduction technique is disclosed using a differential gloss pattern to generate a security mark on a printed image to prevent against copying or fraudulent misrepresentation of the image.

Method and apparatus for variable gloss reduction

The smoothness of a toner layer is reduced and thus the gloss of a resulting print is reduced. A single toner, the original high gloss version, is enabled to print all images. A finishing option is provided which, through application of a combination of heat and pressure with a textured roller, reduces the specular gloss of the toner surface by imprinting a high frequency texture onto the smooth toner layer. By adjusting the temperature/pressure of the textured roller, the effective gloss of the press can be adjusted through software as desired.

Limitations of conventional dimensional printing techniques are addressed to provide features and flexibility not presently available, including extracting images selectively from a Postscript&#xae; or PDF file and thus enable texturing of individual images within a page; constructing the texture automatically directly from the image using image processing techniques; visualizing the texture to be applied to an image via construction of a bump map or normal map in openGL and DirectX&#xae;; adjusting texturing parameters via visual feedback in openGL and DirectX&#xae;; and inserting a clear texture back into a PDF file for printing automatically.

Method and apparatus for creating a dimensional layer for an image file

Apparatus and methods are provided for editing color profiles. In particular, input data (such as reference image data) are received, and then are converted to first output data using a first color profile and to second output data using a second color profile, wherein the second color profile is an edited version of the first color profile. Soft proof data corresponding to the input data, first output data and second output data are calculated and then displayed on a display device. The soft proof data corresponding to the input data, first output data and second output data may be simultaneously or selectively displayed on the display device.

Methods and apparatus for color profile editing

Apparatus and methods are provided for editing color profiles. In particular, an output color including a first hue, a first lightness and a first chroma is received, and a first range of lightness values and a first range of chroma values for all output color values in the color profile are determined. A second range of lightness values of output color values in the color profile that have the first hue and the first chroma, and a second range of chroma values of output color values in the color profile that have the first hue and the first lightness are determined. Graphical representations of the first and second ranges of lightness values, and the first and second ranges of chroma values are distinctly displayed on a display device. A user interface is provided that allows a user to create an edited output color including a second hue, a second lightness and a second chroma, and dynamically modify the second range of lightness values and the second range of chroma values based on the edited output color.

Apparatus and methods for selective color editing of color profiles

Apparatus and methods are provided for editing color profiles. In particular, apparatus and methods in accordance with this invention receive an output color including a first hue, identify from the color profile a plurality of output color values that have a hue substantially equal to the first hue, provide a user interface that allows a user to create an edited output color including a second hue, and shift the hue of the identified plurality of output color values from the first hue to the second hue.

Apparatus and methods for editing hue and saturation in color profiles

Methods and systems for compression of digital images (still or motion sequences) are provided wherein predetermined criteria may be used to identify a plurality of areas of interest in the image, and each area of interest is encoded with a corresponding quality level (Q-factor). In particular, the predetermined criteria may be derived from measurements of where a viewing audience is focusing their gaze (area of interest). In addition, the predetermined criteria may be used to create areas of interest in an image in order to focus an observer's attention to that area. Portions of the image outside of the areas of interest are encoded at a lower quality factor and bit rate. The result is higher compression ratios without adversely affecting a viewer's perception of the overall quality of the image.

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Minnetonka, MN, United States of America

Thor A Olson