	US 12,081,874 B2
	Camera multi-line time-division exposure processing method and system
Haixing Sun, Anhui (CN); Ning Dong, Anhui (CN); Guiping Cao, Anhui (CN); and Xue Wang, Anhui (CN)
Assigned to HEFEI I-TEK OPTOELECTRONICS CO., LTD., Anhui (CN)
Filed by HEFEI I-TEK OPTOELECTRONICS CO., LTD., Anhui (CN)
Filed on Jul. 13, 2022, as Appl. No. 17/863,557.
Application 17/863,557 is a continuation of application No. PCT/CN2020/129415, filed on Nov. 17, 2020.
Claims priority of application No. 202010202713.1 (CN), filed on Mar. 20, 2020.
Prior Publication US 2022/0345609 A1, Oct. 27, 2022
Int. Cl. H04N 23/72 (2023.01); H04N 1/195 (2006.01); H04N 5/265 (2006.01); H04N 23/45 (2023.01); H04N 23/56 (2023.01); H04N 101/00 (2006.01)

CPC H04N 23/72 (2023.01) [H04N 1/19594 (2013.01); H04N 5/265 (2013.01); H04N 23/45 (2023.01); H04N 23/56 (2023.01); H04N 2101/00 (2013.01)]

8 Claims

1. A camera multi-line time-division exposure processing method, involving a camera and n light sources, wherein the number of N sensor lines of the camera is equal to the number of the n light sources, and the N sensor lines correspond to the n light sources in a one-to-one correspondence, a plurality of sensor lines of the N sensor lines beings configured to respectively collect image data of an object moving through the camera's field of view along one direction under the corresponding light sources,

the method comprising:

obtaining a trigger signal to trigger at one time, based on the trigger signal, the n light sources to turn on and off sequentially, collecting image data of the object exposed under a turned-on light source, and extracting image data of the object obtained by one sensor line corresponding to the turned-on light source as valid data;

splicing, in response to that image data of a same portion of the object is collected by the plurality of lines of the sensor, all the valid data of the same portion of the object to obtain a spliced image under different light sources; and

cyclically outputting the spliced image to obtain a complete image of the object,

wherein in said splicing, in response to that image data of the same portion of the object is collected by the plurality of lines of the sensor, all the valid data of the same portion of the object to obtain the spliced image under different light sources, said splicing the valid data comprises:

writing image data of the same portion of the object collected by the plurality of sensor lines at different times into a plurality of image caches, wherein the plurality of image caches corresponds to the plurality of sensor lines in a one-to-one correspondence; and

aligning the image data of the same portion of the object in the plurality of image caches, and sequentially outputting the image data of the same portion of the object collected by the plurality of sensor lines to obtain the spliced image under the different light sources.