Digital image system and method for combining sensing and image processing on sensor with two-color photo-detector
First Claim
1. A digital image system, comprising:
- a digital image sensor including at least an array of photo-detectors having one or more repeat units therein, each said repeat unit including at least one single-color photo-detector capable of detecting a luminance value and a two-color photo-detector capable of detecting first and second chrominance values; and
interpolation logic connected to receive said detected luminance value and interpolate at least one interpolated luminance value associated with said two-color photo-detector, said interpolation logic being further connected to output said detected luminance value without interpolating said first or second chrominance value associated with said detected luminance value.
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Abstract
A digital image system is disclosed having a sensor with an elevated two-color photo-detector for sensing two different color values in combination with a single-color photo-detector for sensing a third color value. Minimal demosaicing is performed to obtain at least one luminance value at each photo-detector location. The sampled chrominance values and sampled and demosaiced luminance values are directly compressed without converting between color spaces and with minimal or no processing required. With a reduced amount of image processing prior to image compression, all of the pre-compression image processing may be performed on the image sensor itself instead of on a separate image processing system.
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Citations
27 Claims
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1. A digital image system, comprising:
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a digital image sensor including at least an array of photo-detectors having one or more repeat units therein, each said repeat unit including at least one single-color photo-detector capable of detecting a luminance value and a two-color photo-detector capable of detecting first and second chrominance values; and interpolation logic connected to receive said detected luminance value and interpolate at least one interpolated luminance value associated with said two-color photo-detector, said interpolation logic being further connected to output said detected luminance value without interpolating said first or second chrominance value associated with said detected luminance value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A digital image system, comprising:
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a digital image sensor including at least an array of photo-detectors having one or more repeat units therein, each said repeat unit including at least one single-color photo-detector capable of detecting a luminance value and a two-color photo-detector capable of detecting first and second chrominance values; and interpolation logic connected to receive said detected luminance value and interpolate at least one interpolated luminance value associated with said two-color photo-detector, said interpolation logic being further connected to assign said first and second chrominance values to said detected luminance value and output said detected luminance value and said first and second chrominance values. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A method for processing raw digital color image values, comprising:
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providing an array of photo-detectors on a digital image sensor, said array of photo-detectors having one or more repeat units therein, each said repeat unit including at least one single-color photo-detector capable of detecting a luminance value and a two-color photo-detector capable of detecting first and second chrominance values; interpolating at least one interpolated luminance value associated with said two-color photo-detector; and processing said detected luminance value without interpolating said first or second chrominance value associated with said detected luminance value. - View Dependent Claims (24, 25, 26, 27)
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Specification