| An eecient corner matching algorithm is developed to minimize the amount of calculation. To reduce the amount of calculation, all available information from a corner detector is used to make model. This information has uncertainties due to discretization noise and geometric distortion , and this is represented by fuzzy rule base which can represent and handle the uncertainties. From fuzzy inf...

This paper describes a technique for finding regular grids in the images of calibration patterns, a crucial step in calibrating cameras. Corner features located by a corner detector are connected using Delaunay triangulation. Pairs of neighboring triangles are combined into quadrilaterals, which are then topologically filtered and ordered. We introduce a unique data structure for representing b...

than small ones, and that the method doesn’t work when the tube contains sawdust instead of water. Together with Bird and her student Lucy Cheke, Clayton transferred the Aesopian experiment to jays, demonstrating that the ability to use tools is a wider phenomenon in the corvid family, and not restricted to the Corvus genus. Confronting the jays with a range of variations of the experiment, the...

This paper deals with conception of subpixel detection where the focus on accuracy of corner points detection is a goal. Specifically there is traditional Harris corner detector together with two subpixel approaches compared. The first approach is based on the orthogonal vector theory while the other one is refining coordinates by fitting quadratic curves over usual cornerness map. As the proce...

In image matching, traditional template matching method is not suitable for matching two images with large rotation angle. In order to solve this promble, this paper proposes an angle correction algorithm based on key point detection,which begins with corner detection by corner detector based on adaptively filtered curvature function. Then, a stable key piont is selected and the angle of the ro...

Despite years of work, a robust, widely applicable generic “symmetry detector” that can paral-lel other kinds computer vision/image processing tools for the more basic structural charac-teristics, such as “edge” or “corner” detector, remains computational challenge. A new symmetry feature detector with descriptor is proposed in this paper, namely Simple Robust Features (SRF) algorithm. performa...

We describe a novel method of obtaining a fixation point on a moving object f o r a real-time gaze contml sys tem. The method makes use of a real-time implementat ion of a corner detector and tracker and recons tructs the image posi t ion of the desired fixation point from a cluster of corners detected on the object using the affine structure available f r o m t w o or three views. The method i...

An image recognition technique utilizing a database of image characteristics is introduced. This technique is different from eigenimage method which requires a large amount of information of training set images in terms of the size of each image and the number of images in the database. Especially, this technique is useful for recognizing images which have fixed shape and structure such as pain...

Die corner filling is very important in tube hydroforming process. Definition of the internal pressure path is a key factor in improving the corner filling.  However, the factors that cause improvement of corner filling are still unclear. In this paper, effect of bilinear pressure path on corner filling in hydroforming of tube in box-shape die is studied using both finite element simulation and...