Publication

Evaluating Perceptually Prefiltered Video

Touradj Ebrahimi, Andrea Cavallaro, Olivier Steiger
2005
Conference Papers

Abstract

Perceptual prefiltering is the process of enhancing relevant portions of an image or of a video, and of simplifying contextual information in order to improve the perceived quality or the compression ratio. In this paper, we discuss the results of subjective quality evaluation experiments performed to assess the impact of perceptual prefiltering on video coding and we propose an objective quality metric that mimics the behavior of human observers. The predicted performance of the proposed metric is consistent with the subjective evaluation scores. Experimental results demonstrate that perceptual prefiltering leads to quality improvements by up to 10% at low bitrates.

Official source

https://infoscience.epfl.ch/entities/publication/5b364996-7dc7-4df3-9661-697423f56cdc

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Touradj Ebrahimi, Andrea Cavallaro, Olivier Steiger
2005
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/5b364996-7dc7-4df3-9661-697423f56cdc

About this result

Related concepts (32)

Quality (business)

In business, engineering, and manufacturing, quality – or high quality – has a pragmatic interpretation as the non-inferiority or superiority of something (goods or services); it is also defined as being suitable for the intended purpose (fitness for purpose) while satisfying customer expectations. Quality is a perceptual, conditional, and somewhat subjective attribute and may be understood differently by different people. Consumers may focus on the specification quality of a product/service, or how it compares to competitors in the marketplace.

Video coding format

A video coding format (or sometimes video compression format) is a content representation format for storage or transmission of digital video content (such as in a data file or bitstream). It typically uses a standardized video compression algorithm, most commonly based on discrete cosine transform (DCT) coding and motion compensation. A specific software, firmware, or hardware implementation capable of compression or decompression to/from a specific video coding format is called a video codec.

Quality management

Quality management ensures that an organization, product or service consistently functions well. It has four main components: quality planning, quality assurance, quality control and quality improvement. Quality management is focused not only on product and service quality, but also on the means to achieve it. Quality management, therefore, uses quality assurance and control of processes as well as products to achieve more consistent quality. Quality control is also part of quality management.

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