ICIP 2006, Atlanta, GA
 

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Paper Detail

Paper:WA-L2.7
Session:Lossless Image Coding
Time:Wednesday, October 11, 12:00 - 12:20
Presentation: Lecture
Topic: Image & Video Coding: Lossless image coding
Title: MERGE–BASED COLOR QUANTIZATION AND CONTEXT TREE MODELING FOR COMPRESSION OF COLOR QUANTIZED IMAGES
Authors: Alexey Podlasov; University of Joensuu 
 Pasi Fränti; University of Joensuu 
Abstract: A two-stage lossless compression method based on a binary tree representation of colors and on context-based arithmetic coding has been recently proposed. We propose two improvements to this method: merge-based color quantization instead of the original spitting strategy, and context tree modeling optimized for each layer separately. The proposed method achieves better compression performance, and a better reproduction quality in the color progression.