Abstract
Light-weight video coding (LVC) follows distributed video coding (DVC) and designs to move computational complexity from the encoder to the decoder, thus making a low computational complexity encoder. In traditional video coding, the high computational complexity encoder algorithms, where motion estimation and mode decision, are the main transferred objects. In order to alleviate the computational burden, the proposed architecture adopts the Partial Boundary Matching Algorithm (PBMA) and four flexible types of mode decision at the decoder; this circumvents the traditional use of motion estimation and mode decision at the encoder. In simulation, the proposed architecture, Padding Block-based LVC, not only outperforms the state-of-the-art DVC (DISCOVER) codec by up to 4~5 dB but also significantly decreases decoder complexity to approximately one hundred times lower than that of the DISCOVER codec.
Highlights
Video coding involves a complementary pair of systems: a compressor and a decompressor
Lossy video coding is required for higher compression, since lossless video information only allows for moderate compression
Since motion estimation takes up a large part of the computational loading in traditional video coding, the propose method uses a Partial Boundary Matching Algorithm (PBMA) as the motion estimation at the decoder to replace the motion estimation at the encoder
Summary
Video coding involves a complementary pair of systems: a compressor (encoder) and a decompressor (decoder). Since motion estimation takes up a large part of the computational loading in traditional video coding, the propose method uses a Partial Boundary Matching Algorithm (PBMA) as the motion estimation at the decoder to replace the motion estimation at the encoder Another high complexity algorithm, mode decision, needs transfer from the encoder to the decoder through four different flexible modes. The proposed scheme utilizes PBMA and mode decision with decoder algorithms with high performance and low computational complexity inter frame decoding as compared to traditional DVC schemes. 3.4 Mode decision at decoder with PB-based LVC mode decision performance can be significantly enhanced in conventional video coding, the computational complexity at the encoder will remain high. As with the traditional video coding results, intra frame coding prevents the entire GOP frame from distorting
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