摘要
平板显示器的运动图像清晰度比静态会有所恶化,目前国内外有多种主观或客观测试方法,运动图像测试用视频发生器是相关测试所必须的。采用Matlab设计了主观客观通用并可以产生各种运动速度的运动图像清晰度测试序列,并采用非线性编辑平台作为视频播出平台。通过无损压缩和缓存技术,实现了1 920×1 080i/50 Hz序列的实时播放。通过与TG700及VM5000的比对试验发现,视频发生系统的多波群频率响应达到1%,3 dB带宽达到了30 MHz,可以满足1 000线以内静态及动态清晰度的主观评价及客观测试的需求。
Motive picture resolution of flat panel display is worse than the case of static picture. Some objective and subjective measuring methods are proposed. Motive picture generator is necessary for these methods. A set of Matlab designed test sequences is proposed, which are suitable to both static and various velocity motive picture test. Both objective and subjective test are appropriate. Via lossless compression, 1 920 x 1 080i/50 Hz sequences are real-time broadcasted by a nonlinear editing platform. By comparison to TG700 and VMS000, it is found that the multiburst response of proposed system is 1%. So the 3 dB bandwidth is above 30 MHz. The above results demonstrate that the proposed system is suitable for static or motive resolution test and below 1 000 lines.
出处
《电视技术》
北大核心
2011年第18期81-84,87,共5页
Video Engineering
关键词
运动图像
清晰度
测试序列
moving picture
resolution
test sequence
