METHOD FOR RHO-DOMAIN FRAME LEVEL BIT ALLOCATION FOR EFFECTIVE RATE CONTROL AND ENHANCED VIDEO CODING QUALITY

摘要

A method is claimed for encoding a group of pictures at a target bit rate. A pre-analysis procedure (105) is performed for each frame in the group of pictures as to develop a series of parameters. A pre-processing procedure is then performed for a frame selected from said group of pictures (115), so that the parameters associated with the selected frame are updated while the parameters associated unencoded frames from the group of pictures remain the same. These two sets of parameters are then used to determine an allocated bit rate (125) for the frame such that when the frame is actually encoded, the allocated bit rate is reserved for the encoding operation. The allocated bit rate and the target bit rate for the group of pictures may be different, and the quantization level associated with the allocated bit rate may be different than the quantization level associated with the actual bit rate used to encode the frame.