US 12,143,729 B2
High precision color processing for wide dynamic range sensors
Gang Hua, Katy, TX (US); Mihir Narendra Mody, Bengaluru (IN); Niraj Nandan, Plano, TX (US); Shashank Dabral, Allen, TX (US); Rajasekhar Reddy Allu, Plano, TX (US); and Denis Roland Beaudoin, Rowlett, TX (US)
Assigned to Texas Instruments Incorporated, Dallas, TX (US)
Filed by Texas Instruments Incorporated, Dallas, TX (US)
Filed on Nov. 30, 2021, as Appl. No. 17/538,833.
Prior Publication US 2023/0171512 A1, Jun. 1, 2023
Int. Cl. H04N 23/84 (2023.01); H04N 9/67 (2023.01); H04N 9/68 (2023.01)
CPC H04N 23/843 (2023.01) [H04N 9/67 (2013.01); H04N 9/68 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving image data having a first bit depth, wherein the image data includes color values captured by pixels of an image sensor corresponding to one or more colors associated with a first color space;
interpolating the image data to generate color values for one or more colors not captured by the pixels;
expanding the image data from the first bit depth to a second bit depth that is higher than the first bit depth, wherein color values of the expanded image data have a linear dynamic range;
converting the color values of the expanded image data from the first color space to a second color space; and
compressing the color values of the converted image data to a third bit depth that is lower than the second bit depth, wherein the compressed color values have a nonlinear dynamic range.