Patent ID: 9390475
Filing Date: 2016-07-12
CPC Classification: G06T,H04N

Claim Text:
1. A backlight detection method performed by a device with a camera, comprising: acquiring a brightness value of each image block in a to-be-checked image; determining a brightness relationship between the adjacent image blocks according to the brightness value of each image block; determining a dark region and a bright region in the to-be-checked image according to the brightness relationship between the adjacent image blocks; and determining whether the to-be-checked image is a backlight scenario according to the dark region and the bright region, wherein the to-be-checked image comprises M rows and N columns of image blocks, wherein both M and N are positive integers, wherein determining the brightness relationship between the adjacent image blocks according to the brightness value of each image block comprises determining the brightness relationship between any two adjacent image blocks in each row or each column of the to-be-checked image according to a magnitude relationship between a brightness value difference and a first preset brightness threshold, wherein the brightness value difference is a difference between the any two adjacent image blocks in each row or each column of the to-be-checked image, and wherein determining the dark region and the bright region in the to-be-checked image according to the brightness relationship between the adjacent image blocks comprises: