Inter-Frame Post-Processing for Intra-Coded Video

Abstract

We propose a video codec architecture based on mixed quality frames which allows for low-complexity intracoded video to undergo inter-frame post-processing to improve its rate-distortion performance. The video sequence is divided into key and non-key frames by applying different quantization parameters among them. The application of different quantization parameters reduces the bit-rate, but also reduces the quality of the non-key frames. In order to enhance the quality of these non-key frames at the decoding process without additional information, we propose the use of the higher quality (key) frames through motion estimation. For that, in blocks where key and non-key frames "match", we try to apply details of key frames to non-key ones. Tests were carried with H.264-Intra, Motion JPEG 2000 and Motion JPEG video sequences, recording PSNR improvements of up to 1 dB. Index Terms-Video compression, video post-processing, example-based super-resolution, intra-coding of video.Edson Mintsu Hung received the Eng., M.Sc. and D.Sc. degrees from the

HEVC intra prediction acceleration based on texture direction and prediction unit modes reuse

“…The AI configuration is also interesting for use in low complexity devices such as wireless video cameras, mobile phones, and PDAs, which usually have less available processing power or limited energy supplies [7,8].…”

Inter-view prediction of intra mode decision forhigh-efficiency video coding-based multiviewvideo coding

“…14 This configuration avoids the high cost of the motion estimation process required for interframe encoding, simplifying the codec and improving its error resilience, 15 both desirable goals in some video surveillance setups, portable studio-quality cameras, and digital cinema distribution networks. 18,19 As such, the research related to HEVC AI configuration is relevant in many video encoding applications. AI configuration is useful in conjunction with high noise transmission channels since the loss of one frame will only cause local information losses, allowing higher compressed video transmission resilience.…”