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

Claim 17:
18. 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 one of the plurality of rows:
accumulating, by a plurality of registers, brightness values of the plurality of pixels in each block of the row of blocks to obtain a plurality of accumulated brightness values;
calculating, by a plurality of first dividers, an average brightness value for each block of the row of blocks according to the accumulated brightness values;
writing the average brightness values into a first random access memory; and
clearing the plurality of registers in response to writing the average brightness values into the first random access memory, and

for a further one of the plurality of rows:
in response to clearing the plurality of registers, accumulating, by the plurality of registers, brightness values of the plurality of pixels in each block of the further row of blocks to obtain a further plurality of accumulated brightness values.