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A New Fast Fractal Modeling Approach for the Detection of Microcalcifications in Mammograms

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Abstract

In this paper, a novel fast method for modeling mammograms by deterministic fractal coding approach to detect the presence of microcalcifications, which are early signs of breast cancer, is presented. The modeled mammogram obtained using fractal encoding method is visually similar to the original image containing microcalcifications, and therefore, when it is taken out from the original mammogram, the presence of microcalcifications can be enhanced. The limitation of fractal image modeling is the tremendous time required for encoding. In the present work, instead of searching for a matching domain in the entire domain pool of the image, three methods based on mean and variance, dynamic range of the image blocks, and mass center features are used. This reduced the encoding time by a factor of 3, 89, and 13, respectively, in the three methods with respect to the conventional fractal image coding method with quad tree partitioning. The mammograms obtained from The Mammographic Image Analysis Society database (ground truth available) gave a total detection score of 87.6%, 87.6%, 90.5%, and 87.6%, for the conventional and the proposed three methods, respectively.

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Authors and Affiliations

  1. Department of Electronics, Cochin University of Science & Technology, Kochi, Kerala, Pin-682022, India

    Deepa Sankar & Tessamma Thomas

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  1. Deepa Sankar
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  2. Tessamma Thomas
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Correspondence to Tessamma Thomas.

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Sankar, D., Thomas, T. A New Fast Fractal Modeling Approach for the Detection of Microcalcifications in Mammograms. J Digit Imaging 23, 538–546 (2010). https://doi.org/10.1007/s10278-009-9224-6

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  • DOI: https://doi.org/10.1007/s10278-009-9224-6

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