New context-based adaptive linear prediction algorithm for lossless image coding
[ 1 ] Katedra Systemów Telekomunikacyjnych i Optoelektroniki, Wydział Elektroniki i Telekomunikacji, Politechnika Poznańska | [ P ] employee
2014
paper
english
- adaptive prediction
- context coding
- image lossless coding
- prediction error bias correction
EN In the paper an improved Context-Based Adaptive Linear Prediction (CoBALP_ultra) lossless image coding algorithm is presented. Three principal and few auxiliary contexts are defined. CoBALP stage is followed by two-step NLMS predictor, then cumulated predictor error is calculated on the basis of a new formula. It is shown experimentally that indeed, the new technique is time-effective while it outperforms the well known methods having reasonable time complexity, and is inferior only to extremely computationally complex ones.
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