公开(公告)号：US11418742B2

公开(公告)日：2022-08-16

申请号：US16744942

申请日：2020-01-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sai Vishnu Aluru ,  Jay H. Sim ,  David A. Osinski

IPC: H04N5/217 ,  H04N5/369 ,  G06T7/00 ,  G06T7/13 ,  G06T7/10 ,  H04N5/225

Abstract: A method includes capturing a first image of an object at a first time using a camera and assigning shade values to a plurality of pixels in a portion of the first image. The object includes a light portion and a dark portion that is darker than the light portion. The method further includes identifying a first mode value of the shade values corresponding to the light portion of the object in the first image, and identifying a second mode value of the shade values corresponding to the dark portion of the object in the first image. The method further includes determining a difference between the first and second mode values, and determining a contrast of the first image based on the difference.