Algoritmos Optimizados e Hardware Dedicado para a Codificação de Vídeo
Marcelo Porto@Universidade Federal de Pelotas (UFPel), Brasil
Luciano Agostini@Universidade Federal de Pelotas (UFPel), Brasil,
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Abstract:
Esta palestra apresenta os principais temas de pesquisa na área de codificação de vídeo que vêm sendo desenvolvidos no Grupo de Arquiteturas e Circuitos Integrados (GACI) da Universidade Federal de Pelotas (UFPel), no Brasil. Dois trabalhos são apresentados e discutidos com maiores detalhes. O primeiro deles trata da redução da largura de banda de memória necessária para a codificação de vídeo através da compressão de quadros de referência. A solução desenvolvida, chamada Double Differential Reference Frame Compressor (DRFC), reduz em cerca de 69% o a largura de banda necessária para a comunicação com a memória externa, proporcionando uma redução no consumo de energia para acesso à memória de cerca de 65%. O segundo trabalho apresenta um esquema para a redução de complexidade na codificação de vídeos 3D no padrão 3D-HEVC. O esquema é baseado em dois algoritmos, Simplified Edge Detection (SED) e Gradient Based Mode One Filter (GMOF). Estes dois algoritmos visam à redução de complexidade na predição intra de mapas de profundidade, sendo que o esquema proposto apresenta redução de 7 a 35% no tempo de processamento, com perdas mínimas na eficiência de codificação.
Date: 2015-Jun-04 Time: 16:00:00 Room: 336
For more information:
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