Cervical cancer detection using colposcopic images: a temporal approach

In the present work, we propose a methodology analysis of the colposcopic images to help the expert to make a more robust diagnosis of precursor lesions of cervical cancer. Although some others approaches have been used to assess cervical lesion, a complete methodology to evaluate temporal changes of tissue color is still missing. The different processes involved in the analysis are described. The image registration was implemented using the phase correlation method followed by a locally applied algorithm based on the normalized cross-correlation. During the parameterization process, each time series obtained from the image sequences was represented as a parabola in a parameter space. A supervised Bayesian learning approach is proposed to classify the features in the parameter space according to the classification made by the colposcopist. Then those labels are used as a criterion to categorize the tissue and perform the image segmentation. Some preliminary results are shown using unsupervised learning with real data.