Region-Based and Feature Based Mammogram Enhancement Techniques
Region-based enhancement algorithms operate adaptively based on the availability of features and enhances them with respect to their background (irrespective of its shape or size). Region-based approach defines an adaptive region for processing (about a pixel); whose size is dependent upon the availability of features within that region (Pratt et al. in Image enhancement. PIKS Scientific Inside, pp. 247–305, 2001). In such a case, contrast manipulation algorithms can be then applied on a region rather than pixel basis.
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