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Video coding standards: AVS China, H.264/MPEG-4 PART 10, HEVC (high efficiency video coding a.k.a. H.265), VP9 (Google), DIRAC (BBC) and VC-1 (SMPTE) are presented. HEVC is the latest standard developed by ITUT and ISO/IEC. Encoder/decoder functionalities along with advantages/applications are discussed. Open source software, ftp/web sites, standards documents, review papers, conformance bit streams,...
Time-of-flight (ToF) cameras acquire 3D information about observed scenes. They are increasingly used for hand gesture recognition. This paper is also related to this problem. In contrast to other, hand segmentation based, works we propose using point cloud processing and the Viewpoint Feature Histogram (VFH) as the global descriptor of the scene. To empower the distinctiveness of the descriptor a...
A new nonlinear iterative average filtering technique for removing random impulse noise from images is presented. It can be used for both grayscale and color images. Filtering results of the standard test images and comparisons with results of other denoising methods are presented. The authors' approach offers especially good results for strongly corrupted images (corruption pixel ratio above 40%).
A novel approach to the detection of selected security-related events in bank monitoring systems is presented. Thermal camera images are used for the detection of people in difficult lighting conditions. Next, the algorithm analyses movement of objects detected in thermal or standard monitoring cameras using a method evolved from the motion history images algorithm. At the same time, thermal images...
In this paper a wavelet transform based optimum subband thresholding algorithm is proposed. This algorithm is used for denoising of heart sound signals that are highly corrupted by noise. The proposed algorithm applies signal dependent optimum thresholding to all the subbands of the signal. The algorithm is tested against different noise densities of the Phonocardiogram signal (PCG). Experimental...
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