After 4K, 8K UHD resolution can be considered the new challenge for film, visualization and television. Due to the dimension of 8K image, the remote micro and macro images are considered appropriate for visualization ...After 4K, 8K UHD resolution can be considered the new challenge for film, visualization and television. Due to the dimension of 8K image, the remote micro and macro images are considered appropriate for visualization with scientific and educational purposes. This article describes the implementation of the 8K video plug-in to play UHD videos into the SAGE, a collaborative environment for the advancement of scientific research and education developed by EVL (Electronic Visualization Laboratory), upgrading its current resolution for video playing. It also presents the challenges of producing 8K content, the development of the code and introduces the features to view 8K ultra high definition videos in multiple tiles through the use of low cost computer clusters. The SAGE 8K video plug-in implementation was made possible because of the previous development of the Fogo Player, a system to run 4K and 8K content. The results were successfully presented at the CineGrid International Workshop 2013 in San Diego.展开更多
为满足微纳遥感卫星高速视频数据快速压缩下传的需求,提出一种实时H.264视频压缩的轻量化实现方案.系统硬件主要由经过宇航质量保证的高性能可编程逻辑单元FPGA(Field Programmable Gate Array)和H.264视频编码单元DSP(Digital Signal P...为满足微纳遥感卫星高速视频数据快速压缩下传的需求,提出一种实时H.264视频压缩的轻量化实现方案.系统硬件主要由经过宇航质量保证的高性能可编程逻辑单元FPGA(Field Programmable Gate Array)和H.264视频编码单元DSP(Digital Signal Processor)异构组成,可在一块VPX标准6U单元模块上实现超高清4K分辨率视频压缩处理.可编程逻辑单元主要完成超高清分辨率视频数据的标准Camera Link接口协议解析、视频帧拆分和标准Video Port接口协议转换.H.264视频编码单元在实时多任务操作系统的调度下主要完成原始视频帧的拼接恢复和H.264实时视频压缩处理.视频压缩质量评价及卫星在轨应用情况结果表明,单个6U视频压缩单元的4K超高清视频实时压缩处理能力达到2.5Gbps(Giga bit per second),在50∶1,20∶1和10∶1三种压缩比下PSNR(Peak Signal Noise Ratio)均优于36.6dB.参照国际电联ITU-R BT-500-11建议书关于图像质量的五级划分,视频压缩质量达到"优"级.相关研究适合应用于微纳视频遥感监视卫星,且已在珠海一号卫星上得到成功应用.展开更多
文摘After 4K, 8K UHD resolution can be considered the new challenge for film, visualization and television. Due to the dimension of 8K image, the remote micro and macro images are considered appropriate for visualization with scientific and educational purposes. This article describes the implementation of the 8K video plug-in to play UHD videos into the SAGE, a collaborative environment for the advancement of scientific research and education developed by EVL (Electronic Visualization Laboratory), upgrading its current resolution for video playing. It also presents the challenges of producing 8K content, the development of the code and introduces the features to view 8K ultra high definition videos in multiple tiles through the use of low cost computer clusters. The SAGE 8K video plug-in implementation was made possible because of the previous development of the Fogo Player, a system to run 4K and 8K content. The results were successfully presented at the CineGrid International Workshop 2013 in San Diego.
文摘为满足微纳遥感卫星高速视频数据快速压缩下传的需求,提出一种实时H.264视频压缩的轻量化实现方案.系统硬件主要由经过宇航质量保证的高性能可编程逻辑单元FPGA(Field Programmable Gate Array)和H.264视频编码单元DSP(Digital Signal Processor)异构组成,可在一块VPX标准6U单元模块上实现超高清4K分辨率视频压缩处理.可编程逻辑单元主要完成超高清分辨率视频数据的标准Camera Link接口协议解析、视频帧拆分和标准Video Port接口协议转换.H.264视频编码单元在实时多任务操作系统的调度下主要完成原始视频帧的拼接恢复和H.264实时视频压缩处理.视频压缩质量评价及卫星在轨应用情况结果表明,单个6U视频压缩单元的4K超高清视频实时压缩处理能力达到2.5Gbps(Giga bit per second),在50∶1,20∶1和10∶1三种压缩比下PSNR(Peak Signal Noise Ratio)均优于36.6dB.参照国际电联ITU-R BT-500-11建议书关于图像质量的五级划分,视频压缩质量达到"优"级.相关研究适合应用于微纳视频遥感监视卫星,且已在珠海一号卫星上得到成功应用.
