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Phase-adaptive superresolution of mammographic images using complex wavelets

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Phase-adaptive superresolution of mammographic images using complex wavelets

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Título Phase-adaptive superresolution of mammographic images using complex wavelets
Autor Wong, Alexander
Scharcanski, Jacob
Abstract This correspondence describes a new superresolution approach for enhancing the resolution of mammographic images using complex wavelet frequency information. This method allows regions of interest of a mammographic image to be viewed in enhanced resolution while reducing the patient exposure to radiation. The proposed method exploits the structural characteristics of breast tissues being imaged and produces higher resolution mammographic images with sufficient visual fidelity that fine image details can be discriminated more easily. In our approach, the superresolution problem is formulated as a constrained optimization problem using a third-order Markov prior model and adapts the priors based on the phase variations of the low-resolution mammographic images. Experimental results indicate the proposed method is more effective at preserving the visual information when compared with existing resolution enhancement methods.
Contido em IEEE transactions on image processing. New York. Vol. 18, no 5 (May 2009), p. 1140-1146
Assunto Computação gráfica
Processamento : Imagem
[en] Adaptive
[en] Mammography
[en] Phase
[en] Superresolution
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/27631
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