Digital Video Image Quality and Perceptual Coding by H.R. Wu, K.R. Rao

By H.R. Wu, K.R. Rao

The hand is faster than the attention. in lots of situations, so is electronic video. holding photograph caliber in bandwidth- and memory-restricted environments is instantly changing into a fact as thriving learn delves ever deeper into perceptual coding options, which discard superfluous facts that people can't approach or notice. Surveying the subject from a Human visible method (HVS)-based procedure, electronic Video photograph caliber and Perceptual Coding outlines the foundations, metrics, and criteria linked to perceptual coding, in addition to the newest suggestions and applications.This booklet is split generally into 3 elements. First, it introduces the basic conception, options, ideas, and strategies underlying the sector, akin to the fundamentals of compression, HVS modeling, and coding artifacts linked to present recognized recommendations. the following part makes a speciality of photograph caliber evaluation standards; subjective and goal equipment and metrics, together with imaginative and prescient version dependent electronic video impairment metrics; checking out strategies; and foreign criteria relating to photograph caliber. ultimately, sensible functions come into concentration, together with electronic photo and video coder designs according to the HVS in addition to post-filtering, recovery, blunders correction, and concealment techniques.The permeation of electronic photos and video during the international can't be understated. Nor can the significance of maintaining caliber whereas utilizing minimum space for storing, and electronic Video photograph caliber and Perceptual Coding presents the instruments essential to accomplish this goal.Instructors and teachers wishing to use this paintings as a textbook can obtain a presentation of 786 slides in PDF layout geared up to reinforce the textual content. accompany our book(H.R. Wu and K.R. Rao, electronic Video picture caliber and Perceptual Coding, CRC Press (ISBN: 0-8247-2777-0), Nov. 2005)for teachers or teacher to exploit for his or her sessions in the event that they use the e-book.

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1 Macroblock level control . . . . . . . . 2 Picture level control . . . . . . . . . 3 GOP level control . . . . . . . . . . 3 Look Ahead . . . . . . . . . . . . . . 4 Standards-Specific Features . . . . . . . . . . . . 1 Exploitation of Smaller Block Sizes in Advanced Coding Standards . . . . . . . . . . . . . . . . 1 The origin of blockiness . . . . . . . . 2 Parameters that affect blockiness visibility . . . 2 In-Loop Filtering .

3 Simulation Results . . . . . . . . . . . . 1 Results of block classification . . . . . . . 2 Performance evaluation . . . . . . . . 4 Reduction of Ringing Artifacts . . . . . . . . . . . 5 Summary . . . . . . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . . . . 2 Analysis of the Color Bleeding Phenomenon . . . . . . . . 1 Digital Color Video Formats . . . . . . . . . . 2 Color Quantization .

The operation of the HVS is a large and complex area of study. Some of the important features of the HVS are as follows. 1 Contrast Ratio The response of the eye to changes in the intensity of illumination is known to be nonlinear. Consider a patch of light intensity surrounded by a background of intensity I. The just noticeable difference (JND), ΔI, of a target (object) intensity is to be determined as a function of I [Cho95], which states that the sensitivity of human eyes to discriminate between differences in intensity depends not only on the difference itself but also on the level of intensity.

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