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
    • 1. 发明授权
    • Apparatus for constant quality rate control in video compression and target bit allocator thereof
    • 用于视频压缩中的恒定质量速率控制的设备及其目标比特分配器
    • US07373004B2
    • 2008-05-13
    • US10443896
    • 2003-05-23
    • Yung-Ching ChangChia-Chieh ChenTeng-Kai Wang
    • Yung-Ching ChangChia-Chieh ChenTeng-Kai Wang
    • G06K9/36G06K9/46
    • H04N19/124H04N19/149H04N19/172H04N19/176H04N19/61
    • An apparatus for constant quality rate control in moving picture compression. First, a total activity measure for the current picture to be encoded in a set of consecutive pictures is calculated. Based on the total activity measure of the current picture and an activity-to-complexity ratio of a previously encoded picture of the same type in the set of consecutive pictures, a complexity measure of the current picture is estimated. Thus, an instantaneous complexity measure is updated using the complexity measure and then an instantaneous rate is calculated. A target bit budget is allocated to the current picture depending on the instantaneous rate, the complexity measure and the instantaneous complexity measure. After encoding, the activity-to-complexity ratio for the just encoded picture is computed based on the total activity measure, actual bits consumed by the picture and the average of actual quantization step sizes used to encode the picture.
    • 用于运动图像压缩的恒定质量速率控制的装置。 首先,计算在一组连续图像中编码的当前图像的总活动度量。 基于当前图像的总活动度量和连续图像集合中相同类型的先前编码图像的活动与复杂度比,估计当前图像的复杂度度量。 因此,使用复杂度测量来更新瞬时复杂度测量,然后计算瞬时速率。 目标比特预算根据瞬时速率,复杂度测量和瞬时复杂度测量分配给当前图像。 在编码之后,基于总的活动度量,由图片消耗的实际比特和用于编码图像的实际量化步长的平均值来计算刚编码的图像的活动与复杂度比。