Title :
Error-aware quantisation using two complementary scalar quantisers for image/video coding
Author :
Yoo, Kwang ; Sohn, Kwanghoon
Author_Institution :
Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
Proposed is an adaptive quantisation scheme that utilises two complementary scalar quantisers at the block level. The quantisers restrict the sum of absolute quantisation errors (SAQE) within the expected SAQE for a block, given that the inputs of quantisation are uniformly distributed. Integrated into H.264, a significant improvement in coding performance was achieved with little complexity.
Keywords :
data compression; video coding; H.264; SAQE; error-aware quantisation; image coding; scalar quantisers; sum of absolute quantisation errors; video coding;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.1210
