منابع مشابه
Compressed Video Sensing
Recently, the notions of Compressed Sensing and Compressive Sampling have attracted attention as an innovative concept in signal processing. Compressed sensing proposes that, when dealing with signals which are highly compressible in a known basis, for example in a wavelet basis, one can dispense with traditional sampling and instead take a small number of samples which are functionals of the w...
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Compressed sensing is a state-of-the-art technology which can significantly reduce the number of sampled data in sparse signal acquisition. This paper studies the distributed compressed sensing (DISCOS) of video signals. To this end, we propose adaptive adjustments to the block-based (local) measurement rate, the frame-based (global) measurement rate, and the sparse dictionary size, thus formin...
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The objective of pre-processing is to eliminate information of least visual signi cance prior to encoding, in order to achieve best overall performance of a video compression system. We formulate the pre-processing problem in an operational rate-distortion framework, with the aim of maximizing the visual quality of the compressed video, as well as the coding eÆciency of the system. Rather than ...
متن کاملCharacterizing perceptual artifacts in compressed video streams
To achieve optimal video quality under bandwidth and power constraints, modern video coding techniques employ lossy coding schemes, which often create compression artifacts that may lead to degradation of perceptual video quality. Understanding and quantifying such perceptual artifacts play important roles in the development of effective video compression, streaming and quality enhancement syst...
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ژورنال
عنوان ژورنال: IEICE Communications Express
سال: 2015
ISSN: 2187-0136
DOI: 10.1587/comex.4.251