公开(公告)号：US11949996B2

公开(公告)日：2024-04-02

申请号：US17743216

申请日：2022-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Daniel Hernandez ,  Sarah Parisot ,  Ales Leonardis ,  Gregory Slabaugh ,  Steven George McDonagh

IPC: H04N23/88 ,  G06V10/56 ,  G06V10/60 ,  G06V10/762 ,  G06V10/764 ,  G06V10/774 ,  G06V10/82 ,  H04N9/64

CPC classification number: H04N23/88 ,  G06V10/56 ,  G06V10/60 ,  G06V10/762 ,  G06V10/764 ,  G06V10/774 ,  G06V10/82 ,  H04N9/646

Abstract: A device for estimating a scene illumination color for a source image is configured to: determine a set of candidate illuminants and for each of the candidate illuminants, determine a respective correction of the source image; for each of the candidate illuminants, apply the respective correction to the source image to form a corresponding set of corrected images; for each corrected image from the set of corrected images, implement a trained data-driven model to estimate a respective probability of achromaticity of the respective corrected image; and based on the estimated probabilities of achromaticity for the set of corrected images, obtain a final estimate of the scene illumination color for the source image. This approach allows for the evaluation of multiple candidate illuminates to determine an estimate of the scene illumination color.