Study on huber fractal image compression

  • Authors:
  • Jyh-Horng Jeng;Chun-Chieh Tseng;Jer-Guang Hsieh

  • Affiliations:
  • Department of Information Engineering, I-Shou University Kaohsiung County, Taiwan, R.O.C.;Department of Management Information System, Yung-Ta Institute of Technology and Commerce, Pingtung, Taiwan, R.O.C.;Department of Electrical Engineering, I-Shou University Kaohsiung County, Taiwan, R.O.C.

  • Venue:
  • IEEE Transactions on Image Processing
  • Year:
  • 2009

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Abstract

In this paper, a new similarity measure for fractal image compression (FIC) is introduced. In the proposed Huber fractal image compression (HFIC), the linear Huber regression technique from robust statistics is embedded into the encoding procedure of the fractal image compression. When the original image is corrupted by noises, we argue that the fractal image compression scheme should be insensitive to those noises presented in the corrupted image. This leads to a new concept of robust fractal image compression. The proposed HFIC is one of our attempts toward the design of robust fractal image compression. The main disadvantage of HFIC is the high computational cost. To overcome this drawback, particle swarm optimization (PSO) technique is utilized to reduce the searching time. Simulation results show that the proposed HFIC is robust against outliers in the image. Also, the PSO method can effectively reduce the encoding time while retaining the quality of the retrieved image.