International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 64 - Number 21 |
Year of Publication: 2013 |
Authors: Nizar Ben Hamad, Khaled Taouil, Med Salim Bouhlel |
10.5120/10758-5695 |
Nizar Ben Hamad, Khaled Taouil, Med Salim Bouhlel . Mammographic Microcalcifications Detection using Discrete Wavelet Transform. International Journal of Computer Applications. 64, 21 ( February 2013), 17-22. DOI=10.5120/10758-5695
Breast cancer can be diagnosed with an early training course by detecting the presence of microcalcifications in screening mammograms. The multiresolution analysis using discrete wavelet transform presents characteristics which can be exploited to develop tools for detection of microcalcifications. The objective of this work is to study the best type of wavelet and the optimal level of decomposition for a better detection. The approach is divided into two phases. The first phase of the algorithm consists on multiresolution analysis based on 1-D discrete wavelet transform over profiles of microcalcifications extracted from mammographic images. This analysis is carried out with several families of wavelets. The second phase of the algorithm is interested in the validation of the results of the first. In this stage, we apply 2-D discrete wavelet transform in analysis and synthesis on screening mammograms extracted from the mini-MIAS database (Mammographic Image Analysis Society) in order to detect the microcalcifications.