Back to results
US 8,508,624 B1Granted
Camera with color correction after luminance and chrominance separation
AssigneeAmbarella, Inc.
InventorElliot N. Linzer
Life of this patent
Estimating the term…
Abstract
An apparatus having a circuit is disclosed. The circuit may be configured to (i) receive a digital image from an electro-optical sensor, (ii) convert the digital image from a red-green-blue representation to a luminance-and-chrominance representation, (iii) generate a reduced noise representation of the digital image by reducing noise in the luminance-and-chrominance representation and (iv) generate a color corrected representation of the digital image by color correcting the reduced noise representation.
Claims18
An apparatus comprising:
- a circuit configured to (i) receive a digital image from an electro-optical sensor, (ii) convert said digital image from a red-green-blue (RGB) representation to a luminance-and-chrominance representation, (iii) generate a reduced noise representation of said digital image by reducing noise in said luminance-and-chrominance representation and (iv) generate a color corrected representation of said digital image by first color correcting said reduced noise representation, wherein (A) said first color correcting maps said reduced noise representation from a first color space to a second color space in three dimensions and (B) said circuit is further configured to second color correct said digital image prior to said reduction of said noise in said luminance-and-chrominance representation, wherein said second color correct maps said digital image from a third color space to a fourth color space in three dimensions.
A method for reducing noise in a digital image, comprising the steps:
- (A) receiving said digital image from a camera sensor;
- (B) converting said digital image from a red-green-blue (RGB) representation to a luminance-and-chrominance representation using a circuit;
- (C) generating a reduced noise representation of said digital image by reducing noise in said luminance-and-chrominance representation;
- (D) generating a color corrected representation of said digital image by first color correcting said reduced noise representation, wherein said first color correcting maps said reduced noise representation from a first color space to a second color space in three dimensions;
- and
- (E) second color correcting said digital image prior to said reducing of said noise in said luminance-and-chrominance representation, wherein said second color correcting maps said digital image from a third color space to a fourth color space in three dimensions.
3 more elements
An apparatus comprising:
- means for receiving a digital image from an electro-optical sensor;
- means for converting said digital image from a red-green-blue representation to a luminance-and-chrominance representation;
- means for generating a reduced noise representation of said digital image by reducing noise in said luminance-and-chrominance representation;
- and
- means for generating a color corrected representation of said digital image by color correcting said reduced noise representation, wherein (A) said color correcting maps said reduced noise representation from a first color space to a second color space in three dimensions and (B) said apparatus is further configured to second color correct said digital image prior to said reduction of said noise in said luminance-and-chrominance representation, wherein said second color correct maps said digital image from a third color space to a fourth color space in three dimensions.
2 more elements
Dependencies are inferred from the claim text.