High precision color processing for wide dynamic range sensors

• Main Authors: SHASHANK. DABRAL, NANDAN NIRAJ, BEAUDOIN DANIEL R, ALLU RAJASEKHAR REDDY, HUA GANG, MODY MIHIR NARENDRA
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention relates to high precision color processing for wide dynamic range sensors. A technique for image processing includes receiving (502) input image data, where the image data is companded to a first bit depth, where the image data includes incomplete color values for pixels of the image data, and where the image data is associated with a first color space; interpolating (504) the image data to produce color values of the incomplete color values for pixels of the image data; expanding (506) the image data from the first bit depth to a second bit depth, where the color values of the expanded image data have a linear dynamic range, and where the second bit depth is higher than the first bit depth; converting (508) the color values of pixels of the expanded image data from the first color space to a second color space; and compressing (510) the color values of pixels of the image data to a third bit depth, the third bit depth being lower than the second bit depth, and wherein the compressed color value