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We present a multi-scale camera array to capture and synthesize gigapixel videos in an efficient way. Our acquisition setup contains a reference camera with a short-focus lens to get a large field-of-view video and a number of unstructured long-focus cameras to capture local-view details. Based on this new design, we propose an iterative feature matching and image warping method to independently warp...
Error concealment (EC) is an important post processing technique to deal with the packet loss during the transmission of compressed video stream. This paper aims to address the problem of recovering the missing block in the decoded video stream from the perspective of compressed sensing. The missing block is assumed to be sparsely represented by a dictionary of prototype signal atoms. The atoms are...
The coding efficiency improvement of stereoscopic video system is a hot research topic in the 3D video coding areas. To better exploit the redundancy between the two channels of stereoscopic video, a stereoscopic video coding scheme for Audio Video Coding Standard (AVS) is proposed in the paper. The superior coding performance of the proposed scheme benefits from an enhanced block prediction algorithm,...
Editor's NoteThe 3D experience is poised to be the future of entertainment. The path to that future, however, is bumpy. Despite widely available 3D display devices, a lack of 3D content impedes the 3D industry's rapid growth. Here the authors discuss some common 3D content-creation processes and the key elements that affect quality, and present an approach that converts 2D content to 3D content as...
Rate control plays an important role in video coding and transmission. current initialization of quantization parameter (QP) in H.264 rate control takes the same value for images with different complexity as long as the bit number per pixel is the same which is different from the real-world situation. In this paper, we propose a new R-Q model and QP initializing method to improve the precision of...
H.264 is becoming the worldwide digital video standard for consumer electronics and personal computers. In particular, H.264 has already been selected as a key compression codec for the next generation of optical disc formats, HD-DVD and Blue-ray disc. Rate control (RC) plays an important role in allocating H.264 bits to adapt to the actual channel bandwidth and meanwhile achieve high-quality reconstructed...
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