会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Adding fields of a video frame
    • 添加视频帧的字段
    • US06823006B2
    • 2004-11-23
    • US10225383
    • 2002-08-21
    • Antonius Adrianus Cornelis Maria KalkerJohan Cornelis Talstra
    • Antonius Adrianus Cornelis Maria KalkerJohan Cornelis Talstra
    • H04B166
    • G06T1/0085G06T2201/0061G06T2201/0065H04N19/112H04N19/467
    • For some video processing applications, most notably watermark detection (40), it is necessary to add or average (parts of) the two interlaced fields which make up a frame. This operation is not trivial in the MPEG domain due to the existence of frame-encoded DCT blocks. The invention provides a method and arrangement for adding the fields without requiring a frame memory or an on-the-fly inverse DCT. To this end, the mathematically required operations of inverse vertical DCT (321) and addition (322) are combined with a basis transform (323). The basis transform is chosen to be such that the combined operation is physically replaced by multiplication with a sparse matrix (32). Said sparse matrix multiplication can easily be executed on-the-fly. The inverse basis transform (35) is postponed until after the desired addition (33, 34) has been completed.
    • 对于一些视频处理应用,最值得注意的是水印检测(40),有必要添加或平均构成帧的两个隔行扫描场(部分)。 由于存在帧编码的DCT块,所以在MPEG域中这种操作并不是微不足道的。 本发明提供了一种用于在不需要帧存储器或即时反DCT的情况下添加场的方法和装置。 为此,逆垂直DCT(321)和加法(322)的数学上需要的操作与基础变换(323)组合。 选择基础变换使得组合操作被物理地替换为与稀疏矩阵(32)的乘法。 所述稀疏矩阵乘法可以容易地在运行中执行。 反向基变换(35)被推迟直到所需加法(33,34)完成。