公开(公告)号：US20210027526A1

公开(公告)日：2021-01-28

申请号：US17044270

申请日：2019-05-13

Applicant: Microsoft Technology Licensing, LLC

Inventor： Yue DONG ,  Guojun CHEN ,  Xin TONG

IPC: G06T15/60 ,  G06T15/80 ,  G06T17/20

Abstract: In accordance with implementations of the subject matter described herein, there is provided a solution of lighting estimation. In the solution, an input image about a real object and a depth map corresponding to the input image are obtained. A geometric structure of the scene in the input image is determined based on the depth map. Shading and shadow information on the real object caused by a light source in the scene is determined based on the determined geometric structure of the scene. Then, a lighting condition in the scene caused by the light source is determined based on the input image and the shading and shadow information. The virtual object rendered using the lighting condition obtained according to the solution can exhibit a realistic effect consistent with the real object.

公开(公告)号：US20180189978A1

公开(公告)日：2018-07-05

申请号：US15738553

申请日：2016-06-24

Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

Inventor： Yue DONG ,  Xin TONG ,  Lin LIANG ,  Jian SHI ,  Stephen S. LIN ,  Simon STACHNIAK

IPC: G06T7/90 ,  G06T5/00 ,  G06T7/11 ,  G06T7/136

CPC classification number: G06T7/90 ,  G06T5/008 ,  G06T7/11 ,  G06T7/136 ,  G06T7/40 ,  G06T11/001 ,  G06T2207/10024

Abstract: Techniques and constructs can determine an albedo map and a shading map from a digital image. The albedo and shading maps can be determined based at least in part on a color-difference threshold. A color shading map can be determined based at least in part on the albedo map, and lighting coefficients determined based on the color shading map. The digital image can be adjusted based at least in part on the lighting coefficients. In some examples, respective shading maps can be produced for individual color channels of the digital image. The color shading map can be produced based at least in part on the shading maps. In some examples, a plurality of regions of the digital image can be determined, as can proximity relationships between individual regions. The albedo shading maps can be determined based at least in part on the proximity relationships.