Patent ID: 11871119
Assignee: BEIJING TUSEN ZHITU TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method, comprising:
dividing an image; into a plurality of blocks, the plurality of blocks being arranged in a plurality of rows and a plurality of columns, each of the plurality of blocks comprising a plurality of pixels,
for each row of the plurality of rows:
for each block of the row:
accumulating, by one of a plurality of registers, brightness values of the plurality of pixels in the block to obtain an accumulated brightness value;
calculating, by one of a plurality of first dividers, an average brightness value of the block according to the accumulated brightness value; and
writing the average brightness value of the block into a first random access memory, and

clearing the plurality of registers in response to writing the average brightness value of each block of the row into the first random access memory,
and
obtaining, by a second divider, an exposure evaluation value according to the average brightness values of the plurality of blocks and predetermined weight coefficients of the plurality of blocks.