AN IMPROVED FRACTAL IMAGE CODING METHOD

作者：Wang Xing Yuan^*; Li Fan Ping; Chen Zhi Feng

来源：Fractals-Complex Geometry Patterns and Scaling in Nature and Society, 2009, 17(4): 451-457.

DOI：10.1142/S0218348X09004545

• Fractal Image Coding
• Quadtree Division
• Asymptotic Strategy
• Neighbor Search

This paper presents a fast fractal image coding method based on quadtree division, improved neighbor search and asymptotic strategy. We search the optimal matched domain block of a range block in its five nearest neighbor blocks and make asymptotic moves along the direction of potential optimal solution. If the optimal solution can not be improved, we carry out quadtree division for this range block until it caters to our demand or reaches greatest division level. The experimental results show that the coding speed of the proposed method declined slightly, but it has a better quality of reconstructed image and higher compression ratio in comparisons with no search method.

• 出版日期2009-12
• 单位大连理工大学