An edge detection technique using local smoothing and statistical hypothesis testing

An edge detection technique based on local smoothing and statistical hypothesis testing for the detection and localization of step edges and roof edges is proposed. Smoothing and statistical hypothesis testing procedures for detection and localization of step edges and roof edges are formulated. Experimental results on gray-scale images are presented. The merits, limitations and factors critical to the performance of the proposed technique are discussed. Possible improvements and future research directions are outlined.