DM642 is a DSP chip specially used for video processing that offered by TI company,it adds a lot of peripheral devices and inter faces based on C6000 series of chips,with the high speed computing ability,it has a wide...DM642 is a DSP chip specially used for video processing that offered by TI company,it adds a lot of peripheral devices and inter faces based on C6000 series of chips,with the high speed computing ability,it has a wide range of applications in multimedia field.This pa per analyzes and describes the works and the main functional modules of two-way video synthesis hardware system based on DM642.展开更多
The existing depth video coding algorithms are generally based on in-loop depth filters, whose performance are unstable and easily affected by the outliers. In this paper, we design a joint weighted sparse representat...The existing depth video coding algorithms are generally based on in-loop depth filters, whose performance are unstable and easily affected by the outliers. In this paper, we design a joint weighted sparse representation-based median filter as the in-loop filter in depth video codec. It constructs depth candidate set which contains relevant neighboring depth pixel based on depth and intensity similarity weighted sparse coding, then the median operation is performed on this set to select a neighboring depth pixel as the result of the filtering. The experimental results indicate that the depth bitrate is reduced by about 9% compared with anchor method. It is confirmed that the proposed method is more effective in reducing the required depth bitrates for a given synthesis quality level.展开更多
文摘DM642 is a DSP chip specially used for video processing that offered by TI company,it adds a lot of peripheral devices and inter faces based on C6000 series of chips,with the high speed computing ability,it has a wide range of applications in multimedia field.This pa per analyzes and describes the works and the main functional modules of two-way video synthesis hardware system based on DM642.
基金Supported by the National Natural Science Foundation of China(61462048)
文摘The existing depth video coding algorithms are generally based on in-loop depth filters, whose performance are unstable and easily affected by the outliers. In this paper, we design a joint weighted sparse representation-based median filter as the in-loop filter in depth video codec. It constructs depth candidate set which contains relevant neighboring depth pixel based on depth and intensity similarity weighted sparse coding, then the median operation is performed on this set to select a neighboring depth pixel as the result of the filtering. The experimental results indicate that the depth bitrate is reduced by about 9% compared with anchor method. It is confirmed that the proposed method is more effective in reducing the required depth bitrates for a given synthesis quality level.