以超高清(Ultra High Definition,UHD)视频技术及应用为研究重点,首先全面介绍超高清视频技术的概述,其次重点分析超高清视频产业链关键组成部分,最后深入探讨超高清视频技术的应用领域,包括在电影、电视、文教娱乐等领域的应用,为超高...以超高清(Ultra High Definition,UHD)视频技术及应用为研究重点,首先全面介绍超高清视频技术的概述,其次重点分析超高清视频产业链关键组成部分,最后深入探讨超高清视频技术的应用领域,包括在电影、电视、文教娱乐等领域的应用,为超高清视频技术发展及应用场景拓展提供参考。展开更多
超高清电视(UHDTV,Ultra High Definition TV)凭借其超高的屏幕分辨率可以更细腻地展现视频的内容,受到越来越多用户的青睐,然而目前超高清节目源发展有限,通常只能将低于超高清电视屏幕分辨率的视频经过插值后播放,这样处理可能会对用...超高清电视(UHDTV,Ultra High Definition TV)凭借其超高的屏幕分辨率可以更细腻地展现视频的内容,受到越来越多用户的青睐,然而目前超高清节目源发展有限,通常只能将低于超高清电视屏幕分辨率的视频经过插值后播放,这样处理可能会对用户主观体验带来一定的影响。如何准确评估UHDTV多分辨率视频源对视频显示质量的影响,对UHDTV业务的部署和优化起到指导性的作用。本文通过主观实验,利用SSIM算法预测视频源编码质量,并进一步分析视频源分辨率对UHDTV视频显示质量的影响,提出一种面向UHDTV的视频显示质量评估模型。实验结果表明,相比SSIM、VIFp和MOVIE三种经典的视频质量评估算法,本文模型所得视频显示质量和主观质量之间的皮尔森系数分别提高1.13%、1.89%和2.31%,斯皮尔曼等级相关系数分别提高1.35%、1.53%和2.24%,RMSE降低35.05%、36.94%和39.71%。所提模型可以更加准确地评价UHDTV视频显示质量。展开更多
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
文摘超高清电视(UHDTV,Ultra High Definition TV)凭借其超高的屏幕分辨率可以更细腻地展现视频的内容,受到越来越多用户的青睐,然而目前超高清节目源发展有限,通常只能将低于超高清电视屏幕分辨率的视频经过插值后播放,这样处理可能会对用户主观体验带来一定的影响。如何准确评估UHDTV多分辨率视频源对视频显示质量的影响,对UHDTV业务的部署和优化起到指导性的作用。本文通过主观实验,利用SSIM算法预测视频源编码质量,并进一步分析视频源分辨率对UHDTV视频显示质量的影响,提出一种面向UHDTV的视频显示质量评估模型。实验结果表明,相比SSIM、VIFp和MOVIE三种经典的视频质量评估算法,本文模型所得视频显示质量和主观质量之间的皮尔森系数分别提高1.13%、1.89%和2.31%,斯皮尔曼等级相关系数分别提高1.35%、1.53%和2.24%,RMSE降低35.05%、36.94%和39.71%。所提模型可以更加准确地评价UHDTV视频显示质量。
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.
