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The video coding perceptual quality at low bit rates was enhanced by a rate control scheme that achieves a better trade off between consistent quality and smooth buffer occupancy. A proportional integral technique was used for the frame level rate control. The motion extrapolated coding complexity propagation model was used to allocate bits between the region of interest (ROI)and other regions while...
Distributed Video Coding (DVC) is a new paradigm for video compression, which is particularly attractive due to its flexibility to introduce very simple encoder structure. However, most DVC systems are unable to adapt to the bandwidth variations. In this paper we propose a scalable DVC scheme, which can adjust the bit-rate linearly depending on the available bandwidth, and thereby achieves optimal...
We propose to use two parameters, the scene complexity (C) and the level of motion (M), to capture the video content characteristics that matter most to the quality of compressed videos transmitted over IP networks, either with or without packet losses. Two simple but robust formulas are designed to calculate these two parameters from the following variables: bits of coded intra (I-) frames (BitsI...
In mobile computing environments, a video encoder should be able to provide high quality of service, which is measured from two perspectives: first, the video quality at a given bit rate must be optimized; second, it should be able to efficiently utilize its power supply to prolong the battery operating time. In other words, it should be able to achieve low power consumption as well as lower video...
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