Edge enhancer for RGB-Beyer to YUV 4:2:0 converter with...

Details Edge enhancer for RGB-Beyer to YUV 4:2:0 converter with... Edge enhancer for RGB-Beyer to YUV 4:2:0 converter with...

2006-11-21

2006-11-21

Srivastava, Vivek (Department: 2622)

Television

Camera, system and detail

With single image scanning device supplying plural color...

C345S604000

Reexamination Certificate

active

07139022

ABSTRACT:
Red, Green, Blue (RGB) pixels in a Beyer pattern are converted to YUV pixels by a converter. The converter does not interpolate RGB pixels to fill in missing RGB color values but instead performs interpolation during conversion to YUV. An edge-enhancement filter is applied to the preliminary Y values to generate final Y values with sharpened edges. The final Y values are combined with R or B pixels from the Beyer pattern to generate U and V chrominance values. Since the preliminary luminance Y values are edge-enhanced, and then the edge-enhanced Y values are used to generate the U, V, values, enhancement improves U and V values as well. Rather than use full-frame intermediate buffers, a 7-line RGB buffer, a 5-line preliminary Y value buffer, and a 3-line final Y buffer can be used.

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