Television – Bandwidth reduction system – Data rate reduction
Patent
1996-10-18
1999-03-02
Tung, Bryan
Television
Bandwidth reduction system
Data rate reduction
348404, 348416, H04N 712
Patent
active
058778136
ABSTRACT:
A signal adaptive loop filter reduces blocking effects and ringing noise of motion-compensated image data. In the loop filter, binary edge map information on which global thresholding and local thresholding with respect to the motion-compensated image are reflected, is used to judge whether the binary edge map information within a predetermined size of the filter window is either a homogeneous or an edge area. If it is judged as a homogeneous area, predetermined first weight factors corresponding thereto are used for generating a filtered pixel value for the corresponding filter window. While, in the case that it is judged as an edge area, predetermined second weight factors are varied according to the binary edge map information corresponding to pixels, and the filter window having the varied second weight factors is used for generating the filtered pixel value corresponding to respective pixels.
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Lee Yung-Lyul
Park Hyun-Wook
Samsung Electronics Co,. Ltd.
Tung Bryan
Vo Tung
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