Hardware-oriented image inpainting for perceptual I-frame error concealment

Error concealment technique can improve subjective video quality in decoder when the video bitstream is corrupted during transmission. In this paper, a new error concealment algorithm for I-frames is proposed. To achieve perceptually comfortable results, image inpainting algorithm is adopted with structure information generated from edge information. In addition, mixed spatial-temporal inpainting scheme is also proposed for I-frames when the previous frame is available. Moreover, a block-based scheduling is also developed for the proposed algorithm to make it simpler for hardware implementation. Experimental results show that the proposed algorithm outperforms the official H.264 decoder and can deal with various error patterns. It also shows that it is suitable for hardware implementation in terms of on-chip memory requirement and predictable processing cycles.