Invention Grant
US08085850B2 Methods and apparatus for efficient encoding of image edges, motion, velocity, and detail
失效
用于图像边缘，运动，速度和细节的有效编码的方法和装置
- Patent Title: Methods and apparatus for efficient encoding of image edges, motion, velocity, and detail
- Patent Title (中): 用于图像边缘，运动，速度和细节的有效编码的方法和装置
-
Application No.: US10831717Application Date: 2004-04-26
-
Publication No.: US08085850B2Publication Date: 2011-12-27
- Inventor: Andrew M. Zador , Vadim M. Kustov , Leonard Henry Bradfield
- Applicant: Andrew M. Zador , Vadim M. Kustov , Leonard Henry Bradfield
- Main IPC: H04N7/18
- IPC: H04N7/18
Abstract:
A wavelet pyramid-based still-image and video compression apparatus uses line-vectors, context-dependent quantization thresholds, hierarchical tree-structured displacement coding, synchronous prediction, and conditional zerotree branch updates to improve intra- and inter-frame coding speed and efficiency, and to improve video stream noise resilience. The disclosed intra-frame coding methods can be used to improve the coding efficiency of wavelet-based still-image compression algorithms.
Public/Granted literature
- US20040213349A1 Methods and apparatus for efficient encoding of image edges, motion, velocity, and detail Public/Granted day:2004-10-28
Information query
