System and Method for Adaptive Frame Re-compression in Video Processing System

Abstract

Method and system of video decoding incorporating frame compression to reduce frame buffer size are disclosed. The method adjusts parameters of the frame compression according to decoder system information or syntax element in the video bitstream. The decoder system information may be selected from a group consisting of system status, system parameter and a combination of system status and system parameter. The decoder system information may include system bandwidth, frame buffer size, frame buffer status, system power consumption, and system processing load. The syntax element comprises reference frame indicator, initial picture QP (quantization parameter), picture type, and picture size. The adaptive frame compression may be applied to adjust compression ratio. Furthermore, the adaptive frame compression may be applied to a decoder for a scalable video coding system or a multi-layer video coding system.

1 . A method of video decoding incorporating frame compression to reduce frame buffer size, the method comprising:
 receiving a video bitstream;
 decoding the video bitstream to generate reconstructed video data; and 
 applying frame compression to the reconstructed video data to generate compressed-reconstructed video data, wherein control of the frame compression is responsive to decoder system information, one or more syntax elements in the video bitstream, or a combination of the decoder system information and said one or more syntax elements in the video bitstream. 
   
     
     
         2 . The method of  claim 1 , wherein the decoder system information is selected from a group consisting of system status, system parameter and a combination of the system status and the system parameter. 
     
     
         3 . The method of  claim 1 , wherein the decoder system information comprises system bandwidth, frame buffer size, frame buffer status, system power consumption, and system processing load. 
     
     
         4 . The method of  claim 1 , wherein said one or more syntax elements comprise reference frame indicator, initial picture QP (quantization parameter), picture type, and picture size. 
     
     
         5 . The method of  claim 1 , wherein the control of the frame compression comprises o frame compression algorithm selection, frame compression parameter adjustment, frame compression enabling, or a combination of said compression algorithm selection, said frame compression parameter adjustment and said frame compression enabling. 
     
     
         6 . The method of  claim 5 , wherein said frame compression parameter adjustment comprises compression ratio adjustment. 
     
     
         7 . The method of  claim 1 , wherein said one or more syntax elements comprise at least one of spatial layer information, quality layer information, view layer information for a multi-view video coding system, and stream identifier information for a multi-stream video coding system. 
     
     
         8 . The method of  claim 1 , wherein said method further comprise:
 decompressing the compressed-reconstructed video data and generating recovered-reconstructed video data.   
     
     
         9 . The method of  claim 8 , wherein said method further comprise:
 providing the recovered-reconstructed video data for decoding process or display.   
     
     
         10 . A system of video decoding incorporating frame compression to reduce frame buffer size, the system comprising:
 a video decoder module operable to generate reconstructed video data from a video bitstream;   a frame compression module operable to generate compressed-reconstructed video data from the reconstructed video data, wherein control of the frame compression module is responsive to decoder system information, one or more syntax elements in the video bitstream, or a combination of the decoder system information and said one or more syntax elements in the video bitstream; and   a storage module operable to store the compressed-reconstructed video data.   
     
     
         11 . The system of  claim 10 , further comprising a system monitor module operable to determine the decoder system information. 
     
     
         12 . The system of  claim 10 , wherein the decoder system information is selected from a group consisting of system status, system parameter and a combination of the system status and the system parameter. 
     
     
         13 . The system of  claim 10 , wherein the decoder system information comprises system bandwidth, frame buffer size, frame buffer status, system power consumption, and system processing load. 
     
     
         14 . The system of  claim 10 , wherein said one or more syntax elements comprise reference frame indicator, initial picture QP (quantization parameter), picture type, and picture size. 
     
     
         15 . The system of  claim 10 , wherein said control of the frame compression module comprises frame compression algorithm selection, frame compression parameter adjustment, frame compression enabling, or any combination of said compression algorithm selection, said frame compression parameter adjustment and said frame compression enabling. 
     
     
         16 . The system of  claim 15 , wherein said frame compression parameter adjustment comprises compression ratio adjustment. 
     
     
         17 . The system of  claim 10 , wherein said one or more syntax elements comprise at least one of spatial layer information, quality layer information, view layer information for a multi-view video coding system, and stream identifier information for a multi-stream video coding system. 
     
     
         18 . The system of  claim 10 , wherein said system further comprises:
 a frame decompression module operable to decompress the compressed-reconstructed video data stored in the storage module into recovered-reconstructed video data, wherein the recovered-reconstructed video data is provided to the video decoder module for decoding process.   
     
     
         19 . The system of  claim 10 , wherein said system further comprises:
 a frame decompression module operable to decompress the compressed-reconstructed video data stored in the storage module into recovered-reconstructed video data, wherein the recovered-reconstructed video data is provided to a display device for displaying the recovered-reconstructed video data.