US 12,192,534 B2
Image processing device and method for performing quality optimized deblocking
Anand Meher Kotra, Munich (DE); Semih Esenlik, Munich (DE); Biao Wang, Shenzhen (CN); Han Gao, Shenzhen (CN); Zhijie Zhao, Shenzhen (CN); and Jianle Chen, San Diego, CA (US)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Sep. 28, 2023, as Appl. No. 18/476,309.
Application 18/476,309 is a continuation of application No. 17/211,638, filed on Mar. 24, 2021, granted, now 11,800,154.
Application 17/211,638 is a continuation of application No. PCT/CN2019/107409, filed on Sep. 24, 2019.
Claims priority of provisional application 62/735,712, filed on Sep. 24, 2018.
Prior Publication US 2024/0107077 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/14 (2014.01); H04N 19/117 (2014.01); H04N 19/176 (2014.01); H04N 19/182 (2014.01); H04N 19/80 (2014.01); H04N 19/86 (2014.01)
CPC H04N 19/86 (2014.11) [H04N 19/117 (2014.11); H04N 19/14 (2014.11); H04N 19/176 (2014.11); H04N 19/182 (2014.11); H04N 19/80 (2014.11)] 20 Claims
OG exemplary drawing
 
1. An image processing device for use in an image encoder and/or an image decoder for deblocking a block edge between a first block and a second block of an image, the image processing device comprising:
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the device to:
generate filtered pixel values from original pixel values of a first pixel, a second pixel and a third pixel, the second pixel and the third pixel being in a same decision pixel line and the first pixel is in a non-decision pixel line;
clip the filtered pixel values of the second pixel and the third pixel using a constant clipping value,
clip the filtered pixel value of the first pixel using a clipping value depending upon a distance of the first pixel from the block edge.