대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2000년도 제13회 신호처리 합동 학술대회 논문집
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- Pages.109-112
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- 2000
IMPROVING DEBLOCKING ALGORITHMS BY USING STEP RESPONSE OF LPE IN THE LOW ACTIVITY REGION
- Kwak, Jung-Won (School of Electrical Eng., Seoul National Univ) ;
- Cho, Nam-Ik (School of Electrical Eng., Seoul National Univ)
- 발행 : 2000.09.01
초록
An algorithm for the reduction of blocking artifacts is pro-posed. Instead of filtering the pixels by a digital filter, the proposed algorithm considers the compressed image as continuous-time ,signal and replaces it by a pre-designed lowpass filter outputs. The algorithm shows better performance than the conventional methods in low activity region, and comparable or a little worse objective performance in high activity region. Hence, by applying the proposed algorithm to the low activity region and the conventional ones to the high activity region, the objective and subjective performances are improved in most cases.
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