US 12,387,331 B2
Image processing systems and methods for mapping errors or artifacts
Liangyi Chen, Beijing (CN); Haoyu Li, Beijing (CN); and Weisong Zhao, Beijing (CN)
Assigned to PEKING UNIVERSITY, Beijing (CN)
Filed by PEKING UNIVERSITY, Beijing (CN)
Filed on Mar. 21, 2024, as Appl. No. 18/613,077.
Application 18/613,077 is a continuation of application No. PCT/CN2021/122442, filed on Sep. 30, 2021.
Prior Publication US 2024/0281933 A1, Aug. 22, 2024
Int. Cl. G06T 5/50 (2006.01); G06T 3/40 (2006.01); G06T 5/20 (2006.01); G06T 7/11 (2017.01)
CPC G06T 5/50 (2013.01) [G06T 3/40 (2013.01); G06T 5/20 (2013.01); G06T 7/11 (2017.01); G06T 2207/20084 (2013.01); G06T 2207/20221 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for image processing, implemented on at least one machine each of which has at least one processor and at least one storage device, comprising:
obtaining a first image and a second image associated with a same object, wherein the first image and the second image are generated by an image acquisition device;
determining a plurality of first blocks of the first image and a plurality of second blocks of the second image, the plurality of second blocks and the plurality of first blocks being in one-to-one correspondence;
determining a plurality of first characteristic values based on the plurality of first blocks and the plurality of second blocks; and
generating a first target map associated with the first image and the second image based on the plurality of first characteristic values, the first target map illustrating reconstruction errors or artifacts of the first image and the second image, each of the first characteristic values corresponding to a pixel of the first target map;
wherein:
the determining a plurality of first blocks of the first image comprises determining the plurality of first blocks of the first image by performing a rolling operation on the first image;
the determining a plurality of second blocks of the second image comprises determining the plurality of second blocks of the second image by performing a rolling operation on the second image; and
the determining a plurality of first characteristic values based on the plurality of first blocks and the plurality of second blocks comprises:
for each of the first blocks or each of the second blocks,
determining a mean value of pixel values of pixels in a central region of the each first block or the each second block;
comparing the mean value with a threshold; and
in response to a determination that the mean value is larger than the threshold, determining a first characteristic value based on a first intermediate image corresponding to the each first block and a second intermediate image corresponding to the each second block: or in response to a determination that the mean value is smaller than the threshold, determining the first characteristic value based on a predetermined value.