Apparatus and method for encoding and decoding digital video...

Details Apparatus and method for encoding and decoding digital video... Apparatus and method for encoding and decoding digital video...

H - Electricity

04

N

H04N 5/278 (2006.01) H04N 5/21 (2006.01) H04N 5/217 (2006.01) H04N 7/088 (2006.01) H04N 7/52 (2006.01)

Patent

CA 2181866

Apparatus and method for encoding and decoding digital video data having subtitle data included therewith and which is operable to remove noise from the subtitle data utilizing correlations between a pixel of the subtitle represented by the subtitle data and adjacent pixels of the subtitle. Particularly, subtitle pixels that represent noise in the subtitle are changed to background level pixels when vertically or horizontally aligned pixels adjacent to the noise pixels are background level pixels. During decoding of the digital video data, the subtitle represented by the subtitle data having the noise removed therefrom is superimposed on the video image represented by the digital video data.

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