An adaptive rate control scheme for multi-screen sharing system based on H.264/SVC

Abstract

Multi-screen sharing system is the common applications of digital home. While users obtain poor experience because of the delay time of frames. In this paper, we propose an adaptive initial quantization parameter (QP) selection for the multi-screen sharing system based on H.264/SVC. First, the image complexity is estimated using a method based on the image gradient information. Second, the bits per pixel (bpp) is calculated in the base layer and the enhancement layer. The initial QP is estimated based on the bpp and the image complexity in every coding layer for H.264/SVC. Moreover, this paper designs and implements the multi-screen sharing system based on H.264/SVC. Experimental results show that the proposed algorithm decreases the delay time significantly and makes the video transmission smoother.