16
Video Noise and Compression Artifacts
Chapter Outline
Video or image data can contain noise: this can be introduced by the sensor, during transmission or during storage. Imperfections on old film can cause noise when it’s converted to digital video form – this tends to be a random type of noise. Noise reduction processing or filtering is a process that can reduce or eliminate this effect.
16.1 Salt-and-pepper Noise
Salt-and-pepper noise occurs when individual pixels or small areas of the image have high contrast, or are very different in color or intensity from their surrounding pixels or areas. This pixel or area is visually noticeable and means that the image contains dark ...
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