Image analysis – Image compression or coding – Transform coding
Reexamination Certificate
2006-03-28
2006-03-28
Couso, Yon J. (Department: 2625)
Image analysis
Image compression or coding
Transform coding
C382S248000
Reexamination Certificate
active
07020342
ABSTRACT:
The invention proposes a method of and a device for coding a signal (S) to obtain a scalable bit-stream (O). The signal (S) comprises blocks of values. Each block is represented (20) as a sequence of bit planes and the values are scanned and transmitted (21, 23) in an order of decreasing bit plane significance. For each bit plane the scanning and transmitting (21,23) are performed in a rectangular scan zone (RMAX/CMAX) starting from a corner of the block (usually an upper-left corner). Preferably, the scanning and transmitting (21,23) is performed on each block individually. The produced bit-stream (O) is quantized to a desired bit-rate by simple truncating (3) the bit-stream (O) at a desired position.
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Kleihorst Richard Petrus
Van Der Vleuten Renatus Josephus
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