Inter-sequence error concealment of high-resolution video sequences in a multi-broadcast-reception scenario

In this paper, a new approach is proposed for the concealment of lost samples in a high-resolution, high-quality video utilizing a low-resolution, highly compressed video with equal content. It is shown, that this inter-sequence error concealment is a very robust and flexible technique which outperforms conventional methods even for low bit rates. By adopting an affine motion model, the proposed technique also performs well in case of different image sizes, cropped image content and arbitrarily shaped loss area. An optimization method limits the computational complexity and maximizes the image restoration quality. If two or more low-resolution reference video sequences are available, the algorithm can be easily expanded. A typical application for inter-sequence error concealment is the restoration of a DVB-T video sequence in a terrestrial multi-broadcast-scenario with DVB-T, DVB-H and T-DMB.