Title :
Two HEVC encoder methods for block artifact reduction
Author :
Norkin, Andrey ; Andersson, Karl ; Kulyk, Valentin
Author_Institution :
Ericsson Res., Stockholm, Sweden
Abstract :
The HEVC deblocking filter significantly improves the subjective quality of coded video sequences at lower bitrates. During the final phase of HEVC standardization, it was shown that the reference software encoder may produce visible block artifacts on some sequences with content that shows chaotic motion, such as water or fire. The paper analyses the reasons for blocking artifacts in such sequences and describes two simple encoder-side methods that improve the subjective quality on these sequences without degrading the quality on other content and without significant bitrate increase. The effect on subjective quality has been evaluated by a formal subjective test.
Keywords :
standardisation; video codecs; video coding; HEVC deblocking filter; HEVC encoder methods; HEVC standardization; block artifact reduction; blocking artifacts; chaotic motion; coded video sequences; encoder-side methods; reference software encoder; visible block artifacts; Bit rate; Encoding; Filtering; Quality assessment; Standards; Transforms; Video sequences; Deblocking; HEVC; block artifacts; encoder; subjective quality;
Conference_Titel :
Visual Communications and Image Processing (VCIP), 2013
Conference_Location :
Kuching
Print_ISBN :
978-1-4799-0288-0
DOI :
10.1109/VCIP.2013.6706452