Image processing apparatus and method

Details Image processing apparatus and method Image processing apparatus and method

1994-01-07

1995-08-22

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

3582612, 3582613, 358401, 348384, H04N 712, H04N 1419, H04N 1415, H04N 100

Patent

active

054445426

ABSTRACT:
An apparatus is provided for quantizing data obtained by transforming image data to a frequency zone so as to encode it. The speed at which such an apparatus performs processing is increased. Data is quantized on the basis of a plurality of coefficients C.sub.1 for controlling a quantizing step. As a result of the quantization, reference encoding data items Nb1 to Nb4 are obtained. Coefficients C5 to C7 for controlling the quantizing step are generated when image data which is delayed by one frame is quantized. At this time, the data items Nb1 to Nb4 are output by bit-shifting the result of the quantization.

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