Image processing apparatus and method for performing prediction

Details Image processing apparatus and method for performing prediction Image processing apparatus and method for performing prediction

1996-10-31

1999-09-28

Moore, David K.

Image analysis

Image compression or coding

Predictive coding

382239, H03M 740

Patent

active

059601167

ABSTRACT:
A prediction error is effectively encoded in case of prediction encoding data by an information processor. A predictor predicts an objective pixel value, and a prediction error generation unit obtains a prediction error from the predictor. A statistics unit calculates, on the basis of a value of the prediction error, a statistical quantity of generation frequency in a plurality of cases corresponding to the value. A convertor converts the value of the prediction error on the basis of the statistical quantity, and an entropy encoder entropy encodes the converted prediction error.

REFERENCES:
patent: 5500678 (1996-03-01), Puri
patent: 5513128 (1996-04-01), Rao
patent: 5550847 (1996-08-01), Zhu
patent: 5563593 (1996-10-01), Puri
"Fast and Efficient Lossless Image Compression", Howard, P.G. et al, Data Compression Conference, Mar. 30, 1993, pp. 351-360, XP000614252.
"Loco-I: A Low Complexity, Context Based, Lossless Image Compression Algorithm", Weinberger, M.J. et al, Data Compression Conference, Mar. 31, 1996, pp. 140-149, XP000617683.

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