Television – Bandwidth reduction system – Data rate reduction
Patent
1997-08-25
2000-10-03
Lee, Michael H.
Television
Bandwidth reduction system
Data rate reduction
348397, 348420, 348627, 348608, 382236, H04N 746
Patent
active
061280410
ABSTRACT:
A binary shape encoding apparatus encodes a binary alpha block (BAB) consisting of M.times.N binary pixels, M and N each being a positive even integer. The apparatus samples every other horizontal lines of the BAB to generate a first block starting from either a first or a second horizontal line of the BAB and then samples every other vertical lines of the first block to generate a first sample block as a base layer also starting from either a first or a second vertical line of the first block, wherein the first horizontal and vertical lines are the topmost horizontal and the leftmost vertical lines in the BAB and the first block, respectively. Then, the apparatus encodes the first sample block to thereby produce coded base layer data and performs enhancement layer encoding based on the BAB, the first block and the first sample block to thereby provide coded horizontal and vertical enhancement layer data.
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Han Seok-Won
Kim Jin-Hun
Daewoo Electronics Co. Ltd.
Desir Jean W.
Lee Michael H.
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