Color resolution enhancement by using color camera and methods

Details Color resolution enhancement by using color camera and methods Color resolution enhancement by using color camera and methods

1994-11-08

1996-09-03

Groody, James J.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348234, 348239, 348712, 348413, H04M 5228

Patent

active

055528252

ABSTRACT:
A color resolution enhancement method and enhanced color cameras (600) with a single CCD detector (606) having attached color filters (604) and using luminance-based gradient interpolation to fill in color channels. A color camera, includes an image detector, the detector with sets S.sub.1, S.sub.2, . . . S.sub.N of pixels for N, an integer greater than 1, where pixels in the set S.sub.J detect radiation in a corresponding sampled channel C.sub.J for each J in the range 1 to N, a channel reconstructor coupled to an output of the detector. The reconstructor includes a luminance generator which combines the sampled channels C.sub.1, C.sub.2, . . . C.sub.N to a luminance channel, a gradient generator coupled to an output of the luminance generator and which transfers the luminance channel to a gradient channel, and a directional interpolator coupled to an output of the detector and to an output of the gradient generator and which transfers each of the sampled channels C.sub.1, C.sub.2, . . . C.sub.N to a corresponding reconstructed channel RC.sub.1, RC.sub.2, . . . RC.sub.N, and a reconstructed channel output.

REFERENCES:
patent: 4912558 (1990-03-01), Easterly
patent: 5001560 (1991-03-01), Ericsson
patent: 5008739 (1991-04-01), D'Luna

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