In skin cancer detection, automated analysis of borders, colors, and structures of a lesion relies upon an accurate segmentation process and it is an important first step in any Computer-Aided Diagnosis (CAD) system. However, irregular and disperse lesion borders, low contrast, artifacts in images and variety of colors within the interest region make the problem difficult. In this paper, we propose an efficient approach of automatic classification which considers specific lesion features. First, for the selection of lesion skin we employ the segmentation algorithm W-FCM.1 Then, in the feature extraction stage we consider several aspects: the area of the lesion, which is calculated by correlating axes and we calculate the specific the value of asymmetry in both axes. For color analysis we employ an ensemble of clusterers including K-Means, Fuzzy K-Means and Kohonep maps, all of which estimate the presence of one or more colors defined in ABCD rule and the values for each of the segmented colors. Another aspect to consider is the type of structures that appear in the lesion Those are defined by using the ell-known GLCM method. During the classification stage we compare several methods in order to define if the lesion is benign or malignant. An important contribution of the current approach in segmentation-classification problem resides in the use of information from all color channels together, as well as the measure of each color in the lesion and the axes correlation. The segmentation and classification measures have been performed using sensibility, specificity, accuracy and AUC metric over a set of dermoscopy images from ISDIS data set
A novel approach in the segmentation for the images of different nature employing the feature extraction in WT space
before the segmentation process is presented. The designed frameworks (W-FCM, W-CPSFCM and WK-Means)
according to AUC analysis have demonstrated better performance novel frameworks against other algorithms existing in
literature during numerous simulation experiments with synthetic and dermoscopic images. The novel W-CPSFCM
algorithm estimates a number of clusters in automatic mode without the intervention of a specialist. The implementation
of the proposed segmentation algorithms on the Texas Instruments DSP TMS320DM642 demonstrates possible real time
processing mode for images of different nature.