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Learning VirtualDub: The Complete Guide to Capturing, Processing and Encoding Digital Video by Georgios Diamantopoulos, Sohail Salehi

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Image Processing Filters

It’s not unusual to have unwanted noise and shadows in captured videos. Several plug-ins have been developed for improving video quality.

Decreasing Color Noise with CNR

One of the effective and useful systems of representing color data is the YUV color space. In this color space, Y is the luminance (brightness intensity) and U (chrominance 1) and V (chrominance 2) are the chroma components (the difference between a color and a chosen reference color of the same luminous intensity). The YUV system is used mainly with video (TV program transmission, VHS recorder, MPEG) whereas computers use the R’G’B’ system.

One of the usual artifacts in video capturing is color noise, and with the CNR (Color Noise Reduction) filter, we ...

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