Video coding with key frames guided super-resolution

Authors:
Qiang Zhou;Li Song;Wenjun Zhang
Affiliations:
Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, Shanghai, China;Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, Shanghai, China;Institute of Image Communication and Information Processing, Shanghai Jiao Tong University, Shanghai, China
Venue:
PCM'10 Proceedings of the Advances in multimedia information processing, and 11th Pacific Rim conference on Multimedia: Part II
Year:
2010

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Abstract

In this paper a video coding scheme with Layered Block Matching Super-resolution (LBM-SR) is presented. At the encoder side, it divides the video frames into key and non-key frames, which are encoded at original resolution and reduced resolution respectively. During the resolution reduction process, most of the high frequency information in non-key frames is dropped to save the bit-rate. At the decoder side, LBM-SR utilizes a Layered Block Matching method in wavelet domain to restore the lost high frequency parts of the non-key frame, with the nearby key frames as a reference. Due to the similarity between key frames and non-key frames, the experimental result is remarkable and the whole scheme is demonstrated to be a promising one.