Image superresolution of cytology images using wavelet based patch search

Carlos Vargas; Juan D. García-Arteaga; Eduardo Romero

doi:10.1117/12.2073524

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28 January 2015 Image superresolution of cytology images using wavelet based patch search

Carlos Vargas, Juan D. García-Arteaga, Eduardo Romero

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Proceedings Volume 9287, 10th International Symposium on Medical Information Processing and Analysis; 92870J (2015) https://doi.org/10.1117/12.2073524
Event: Tenth International Symposium on Medical Information Processing and Analysis, 2014, Cartagena de Indias, Colombia

Abstract

Telecytology is a new research area that holds the potential of significantly reducing the number of deaths due to cervical cancer in developing countries. This work presents a novel super-resolution technique that couples high and low frequency information in order to reduce the bandwidth consumption of cervical image transmission. The proposed approach starts by decomposing into wavelets the high resolution images and transmitting only the lower frequency coefficients. The transmitted coefficients are used to reconstruct an image of the original size. Additional details are added by iteratively replacing patches of the wavelet reconstructed image with equivalent high resolution patches from a previously acquired image database. Finally, the original transmitted low frequency coefficients are used to correct the final image. Results show a higher signal to noise ratio in the proposed method over simply discarding high frequency wavelet coefficients or replacing directly down-sampled patches from the image-database.

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Carlos Vargas, Juan D. García-Arteaga, and Eduardo Romero "Image superresolution of cytology images using wavelet based patch search", Proc. SPIE 9287, 10th International Symposium on Medical Information Processing and Analysis, 92870J (28 January 2015); https://doi.org/10.1117/12.2073524

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