Patent ID: 11949996
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 15:
16. A non-transitory processor-readable medium having processor-executable instructions stored thereon for estimating a scene illumination color for a source image, wherein the processor-executable instructions, when executed, facilitate:
determining, by a device, a set of candidate illuminants;
for each candidate illuminant of the set of candidate illuminants, determining, by the device, a respective correction of the source image;
for each candidate illuminant of the set of candidate illuminants, applying, by the device, the respective correction to the source image to form a corresponding set of corrected images;
for each corrected image from a respective set of corrected images, estimating, by the device, a respective probability of achromaticity of the respective corrected image using a trained data-driven model;
based on estimated probabilities of achromaticity for each set of corrected images, obtaining, by the device, a final estimate of scene illumination color for the source image; and
performing, by the device, a correction on the source image using the obtained final estimate to transform the source image to a target image.