CAJ | 학술논문

在有损信道中,由于前向差错编码的有效性急剧下降,因此对于高突发有损信道,信源和信道的比特率控制优化成为一个挑战.提出了一种有效针对差错恢复的视频自适应编码,通过自适应调整帧内编码更新,优化了视频源比特率失真控制.针对无损和有损信道的差错恢复,进行了理论分析,并且实验模拟了视频样本序列.实验结果验证了理论分析的正确性,同时也表明该方法十分有效.
재유손신도중,유우전향차착편마적유효성급극하강,인차대우고돌발유손신도,신원화신도적비특솔공제우화성위일개도전.제출료일충유효침대차착회복적시빈자괄응편마,통과자괄응조정정내편마경신,우화료시빈원비특솔실진공제.침대무손화유손신도적차착회복,진행료이론분석,병차실험모의료시빈양본서렬.실험결과험증료이론분석적정학성,동시야표명해방법십분유효.
The effectiveness of FEC channel coding is drastically reduced for highly bursty and lossy transmission channel, and the optimization of source and channel rate control is very challenging. This paper presents an effective error resilient a-daptive video coding approach, which is resistant to lossy channel and the source rate distortion is optimized through INTRA refreshing rate adaptation with respect to scene metrics. Its error resilience effects over lossless and lossy channel are analyzed theoretically and are simulated. The experimental work validates our analysis and demonstrates conclusively that our proposed approach is both effective and efficient.