Combining Geometric Edge Detectors for Feature Detection
نویسندگان
چکیده
We propose a novel framework for the analysis and modeling of discrete edge filters, based on the notion of signed rays. This framework will allow us to easily deduce the geometric and localization properties of a family of firstorder filters, and use this information to design custom filter banks for specific applications. As an example, a set of angle-selective corner detectors is constructed for the detection of buildings in video sequences. This clearly illustrates the merit of the theory for solving practical recognition problems.
منابع مشابه
Quad-pixel edge detection using neural network
One of the most fundamental features of digital image and the basic steps in image processing, analysis, pattern recognition and computer vision is the edge of an image where the preciseness and reliability of its results will affect directly on the comprehension machine system made objective world. Several edge detectors have been developed in the past decades, although no single edge detector...
متن کاملQuad-pixel edge detection using neural network
One of the most fundamental features of digital image and the basic steps in image processing, analysis, pattern recognition and computer vision is the edge of an image where the preciseness and reliability of its results will affect directly on the comprehension machine system made objective world. Several edge detectors have been developed in the past decades, although no single edge detector...
متن کاملA Modified Edge-Based Region Growing Segmentation of Geometric Objects
Region growing and edge detection are two popular and common techniques used for image segmentation. Region growing is preferred over edge detection methods because it is more robust against low contrast problems and effectively addresses the connectivity issues faced by edge detectors. Edgebased techniques, on the other hand, can significantly reduce useless information while preserving the im...
متن کاملOn Edge Detection, Edge Integration and Geometric Active Contours
We recently realized that the Marr-Hildreth edges, computed as the zero crossings of the image Laplacian, can be viewed as optimal edge integration curves solving a geometric variational problem. We used this observation to derive a new set of edge integration and object segmentation procedures. Here we show that the edge detectors proposed by Haralick, and subsequently claimed to be optimal, i...
متن کاملتخمین وفقی مرز کلاتر در کلاترهای ویبول با استفاده از پیش آشکارساز UMPI
In radar detection, the existence of the clutter edge in the reference samples considerably degrades the performance of the detector. Hence, clutter edge estimation not only improves the CFAR detectors, but also can be used for partitioning the various areas of the clutter in the clutter map. In this paper, we propose an adaptive algorithm for detecting the clutter edge between two Weibull clut...
متن کامل