By Chao Jiang, Ze-xun Geng, Xiao-feng Wei, Chen Shen (auth.), Wenjun Zhang, Xiaokang Yang, Zhixiang Xu, Ping An, Qizhen Liu, Yue Lu (eds.)
This ebook constitutes the refereed lawsuits of the ninth overseas discussion board on electronic television and instant Multimedia communique, IFTC 2012, Shanghai, China, November. The sixty nine revised complete papers offered have been rigorously reviewed and chosen from a variety of submissions. The papers are geared up in topical sections on photograph processing and development attractiveness; photograph and video research; picture caliber evaluate; textual content snapshot and speech processing; content material retrieval and defense; resource coding; multimedia verbal exchange; new advances in broadband multimedia; human laptop interface; 3D video.
Read or Download Advances on Digital Television and Wireless Multimedia Communications: 9th International Forum on Digital TV and Wireless Multimedia Communication, IFTC 2012, Shanghai, China, November 9-10, 2012. Proceedings PDF
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Additional info for Advances on Digital Television and Wireless Multimedia Communications: 9th International Forum on Digital TV and Wireless Multimedia Communication, IFTC 2012, Shanghai, China, November 9-10, 2012. Proceedings
ConsidNVIDIA ering the inherently parallel-friendly nature, our algorithm can be implemented TM eﬃciently on GPU with CUDA . e. each thread in the kernel computes k-nearest neighbors to one patch in image A as depicted in image 2. The patches of diﬀerent threads are mutually exclusive. Only one kernel function for propagation is needed. Each launch of kernel completes one complete propagation round with step length of l. Since the threads of diﬀerent blocks cannot be synchronized, we have to store two k-nearest neighbor heaps, one for the former round, and one for the current round.
When adopting exhaustive search, such operation is time consuming. In order to reduce the number of the search, we do some modifications on the basic exhaustive search employing the so called coarse-to-fine search. There are two main stages in our search strategy: coarse search and fine search. In the coarse search, we search the skew angle using 1˚as the search step length. 2 degrees. 1˚as the final estimation of the skew angle, which is denoted as θ. Adopting the improved search scheme, for the search range [-15˚, 15˚], only 42 times of rotation operation and 43 times of evaluation of function (3) are needed.
HSI color is a typical mathematical color space that decouples the brightness information from the color information. Fig. 2 shows sample images synthesized in these two color spaces. The undistorted one on the left is synthesized in RGB color space while the heavily distorted one on the right is reconstructed in HSI color space. Thus, we can get two conclusion remarks: (1) RGB images are generated by a digital imaging system, so the CRFs recovered from each color channel are very close to each other, as shown by the right figure in Fig.