10th International Conference on Image Analysis and Processing (ICIAP'99)
Two Dimensional Generalized Edge Detector
Venice, Italy
September 27-September 29
ISBN: 0-7695-0040-4
Detecting edges in images is one of the most challenging issue in computer vision and image processing due to lack of a robust detector. G?kmen and Jain [1] have obtained an edge detector called Generalized Edge Detector (GED), capable of producing most of the existing edge detectors. The original problem was formulated on two dimensional Hybrid model [1] comprised of the linear combination of membrane and thin-plate functionals. Smoothing problem was then reduced to the solution of two dimensional partial differential equation (PDE). The filters were obtained for one dimensional case assuming a separable solution.This study extends edge detection of images in \math-space to two dimensional space. Two dimensional extension of the representation is important since the properties of images in the space is best modeled by two dimensional smoothing and edge detector filters. Also since GED filters encompass most of the well-known edge detectors, two dimensional version of these filters could be obtained. The derived filters are more robust to noise when compared to the previous one dimensional filtering scheme in the sense of FOM (Figure Of Merit), missing and false alarm characteristics. Experimental results on synthetic and natural images are presented, including an analysis of the introduced two dimensional edge detector filters and the behavior of the detected edges through the \math-space.