open access

https://hdl.handle.net/2115/39645

Adaptive Texture-based Spatial Error Concealment with Data Hiding for H.264

英語

2009-10-04

Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee

Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference

71-78

APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Oral session: Image and Video Coding (5 October 2009).

The coding standard such as H.264/AVC or MPEG4 which have a high compression rate made it possible to transmit video data and even real-time video payload over network. However, the influence of error propagation and the sequential data loss in the spatial domain also occur as the side effect of this high compression rate. In order to improve the image quality degraded by transmission errors error concealment techniques are useful. By using the spatial relativity of the image after compression, it is feasible for the decoder to accomplish this job alone without consuming any extra network bandwidth. In this paper, we propose an efficient method for reconstructing multi-edge cases for error concealment. By manipulating each edge unit separately, deriving the angle of the gradient for each unit by a similar procedure of directional interpolation, forming the best connection pattern with proper judging criterion, and filling the rest of the region by bilinear interpolation, we reconstruct the error blocks. Besides, the estimation of the best error concealment algorithm, which is processed in the decoder, is done in the encoder. Then we embed the estimated result into the image by data hiding techniques. Once the error appeared during the transmission, the decoder can efficiently conceal the loss by the information embedded by the encoder without incurring extra network payload.

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