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Principles of video compression

Principles of video compression

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This chapter discusses the principles of video compression. The statistical analysis of video signals indicates that there is a strong correlation both between successive picture frames and within the picture elements themselves. Theoretically, decorrelation of these signals can lead to bandwidth compression with out significantly affecting image resolution. Moreover, the insensitivity of the human visual system to loss of certain spatio-temporal visual information can be exploited for further reduction. Hence, subjectively lossy compression techniques can be used to reduce video bit rates while maintaining an acceptable image quality.

Inspec keywords: bandwidth compression; decorrelation; statistical analysis; video signals; image resolution; video coding

Other keywords: video signal; standard codec; human visual system; bandwidth compression; statistical analysis; image resolution; lossy compression technique; video compression; advanced video coding; image compression; image quality; decorrelation

Subjects: Image and video coding

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