Detection of Tumours in Digital Mammograms Using Wavelet Based Adaptive Windowing Method

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G.Bharatha Sreeja 1,* P. Rathika 2 D. Devaraj 3

1. PG Communication Systems, Cape Institute of Technology, Levengipuram, India

2. ECE Dept., Cape Institute of Technology, Levengipuram, India

3. DEAN, R&D, Kalasalingam University, Krishnankoil, India

* Corresponding author.


Received: 20 Dec. 2011 / Revised: 5 Jan. 2012 / Accepted: 12 Feb. 2012 / Published: 8 Mar. 2012

Index Terms

Wavelet based Thresholding, breast cancer, mammography, window based Thresholding, segmentation


Mammography is the most effective procedure for the early detection of breast diseases. Mammogram analysis refers the processing of mammograms with the goal of finding abnormality presented in the mammogram. In this paper, the tumour can be detected by using wavelet based adaptive windowing technique. Coarse segmentation is the first step which can be done by using wavelet based histogram thresholding where, the thereshold value is chosen by performing 1-D wavelet based analysis of PDFs of wavelet transformed images at different channels. Fine segmentation can be done by partitioning the image into fixed number of large and small windows. By calculating the mean, maximum and minimum pixel values for the windows a threshold value has been obtained. Depending upon the threshold values the suspicious areas have been segmented. Intensity adjustment is applied as a preprocessing step to improve the quality of an image before applying the proposed technique. The algorithm is validated with mammograms in Mammographic Image Analysis Society Mini Mammographic database which shows that the proposed technique is capable of detecting lesions of very different sizes.

Cite This Paper

G.Bharatha Sreeja, P. Rathika, D. Devaraj, "Detection of Tumours in Digital Mammograms Using Wavelet Based Adaptive Windowing Method", International Journal of Modern Education and Computer Science (IJMECS), vol.4, no.3, pp.57-65, 2012. DOI:10.5815/ijmecs.2012.03.08


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