Abstract: A dual-pixel full color CMOS imager comprises a two-photodiode stack including an n doped substrate, a bottom photodiode, and a top photodiode. The bottom photodiode has a bottom p doped layer at a first depth overlying the substrate and a bottom n doped layer cathode overlying the bottom p doped layer. The top photodiode has a top p doped layer overlying the bottom n doped layer and a top n doped layer cathode overlying the top p doped layer. A single photodiode including a bottom p doped layer overlies the substrate at a third depth. The third depth is less than, or equal to the first depth. A bottom n doped layer overlies the bottom p doped layer, a top p doped layer directly overlies the bottom n doped layer without an intervening layer, and a top n doped layer overlies the top p doped layer.

Abstract: An integrated infrared (IR) and full color complementary metal oxide semiconductor (CMOS) imager array is provided. The array is built upon a lightly doped p doped silicon (Si) substrate. Each pixel cell includes at least one visible light detection pixel and an IR pixel. Each visible light pixel includes a moderately p doped bowl with a bottom p doped layer and p doped sidewalls. An n doped layer is enclosed by the p doped bowl, and a moderately p doped surface region overlies the n doped layer. A transfer transistor has a gate electrode overlying the p doped sidewalls, a source formed from the n doped layer, and an n+ doped drain connected to a floating diffusion region. The IR pixel is the same, except that there is no bottom p doped layer. An optical wavelength filter overlies the visible light and IR pixels.

Abstract: Aspects of the present invention are related to systems and methods for image demosaicing.

Abstract: Aspects of the present invention are related to systems and methods for image demosaicing.

Abstract: Aspects of the present invention relate to methods and systems for determining image characteristics in a digital image.

Abstract: Aspects of the present invention comprise systems and methods for image illuminant estimation. Some aspects relate to computing an image histogram comprising data relating the frequency of image element color values to color values found under said candidate illuminants, determining match scores for the plurality of candidate illuminants, determining a minimum match score of the match scores and determining minimum match score chromaticity coordinates. Some aspects relate to fitting a surface to the match scores wherein the surface represents illuminant parameter values other than the candidate illuminants, solving for an extremum of the surface and determining chromaticity coordinates of the extremum. Some aspects relate to selecting estimated image illuminant coordinates based on the relative location of the coordinates of one of the candidate illuminants, the coordinates of the extremum and/or the minimum match score chromaticity coordinates.

Abstract: A dual-pixel full color CMOS imager is provided. The imager comprises a two-photodiode stack including an n doped substrate, a bottom photodiode, and a top photodiode. The bottom photodiode has a bottom p doped layer at a first depth overlying the substrate and a bottom n doped layer cathode overlying the bottom p doped layer. The top photodiode has a top p doped layer overlying the bottom n doped layer and a top n doped layer cathode overlying the top p doped layer. The imager further includes a single photodiode including a bottom p doped layer overlying the substrate at a third depth, where the third depth is less than, or equal to the first depth. A bottom n doped layer overlies the bottom p doped layer, a top p doped layer directly overlies the bottom n doped layer without an intervening layer, and a top n doped layer overlies the top p doped layer.

Abstract: Systems and methods for generating color corrected digital image data from a document image according to personal preferences of an identified user of the digital image copy. A color correction profile is provided defining color correction parameters for a particular identified user. The digital image copy is generated in accordance with the color correction profile by replacing problematic colors with alternate presentations as defined by the color correction parameters. The alternate presentations may include corrections to compensate for colorblindness of an identified user. The document image may be logically segmented to identify objects associated with each of a plurality of segments of the document image such as text, graphics, photographic images, etc. The color correction profile may define different color correction parameters to be associated with each defined type of segment.

Abstract: Aspects of the present invention are related to methods and systems for detecting glyph pixels in a digital image.

Abstract: Aspects of the present invention are related to methods and systems for determining a background color in a digital image.

Abstract: Aspects of the present invention are related to methods and systems for determining a background color in a digital image.

Abstract: Aspects of the present invention relate to systems and methods for determining text orientation in a digital image.

Abstract: Aspects of the present invention relate to systems and methods for determining text orientation in a digital image.

Abstract: Aspects of the present invention relate to systems and methods for refining text segmentation results.

Abstract: A method for attenuation of near-neutral image colors is described. The pixel chroma is determined. A chroma control point is determined. A pixel color is shifted toward neutral. An imaging device that is configured for attenuation of near-neutral image colors is described. The imaging device includes a processor. The imaging processing device includes memory in electronic communication with the processor. Instructions are stored in the memory. The instructions are executable to determine pixel chroma. The instructions are also executable to determine a chroma control point. The instructions are further executable to shift a pixel color toward neutral.

Abstract: Embodiments of the present invention comprise systems and methods for estimation of an image illuminant.

Abstract: Embodiments of the present invention comprise systems and methods for refining text-detection results for a digital image.

Abstract: Embodiments of the present invention comprise systems and methods for characterization of background regions of substantially-uniform color in a digital image.

Abstract: Embodiments of the present invention comprise systems and methods for detecting glyph pixels in a rasterized image.

Abstract: Embodiments of the present invention comprise systems and methods for modification of image color-balance corrections.