Technique for video communications using a coding-matched...

Details Technique for video communications using a coding-matched... Technique for video communications using a coding-matched...

H - Electricity

04

N

H04N 7/50 (2006.01) G06T 9/00 (2006.01)

Patent

CA 2276870

In a system for communicating an image, an image compression scheme is employed to encode the image to reduce the required bandwidth for transmitting same. For example, this compression scheme includes performing, on the image, a discrete cosine transform (DCT), followed by quantization. To reduce the effects of coding artifacts occasioned by the compression scheme, in accordance with the invention, a filter arrangement which is matched to the coding of the image may be utilized to process a received image. The filter arrangement is designed to truncate each non-zero frequency component in the received image whose amplitude is lower than a certain threshold, which is a function of the quantization step size used.

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