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This article develops a set space visual servoing method that is quiet different from state-of-the-art approaches. Our approach does not require complex image processing techniques for the extraction, matching and tracking of image features. Instead, it only requires a simple matching algorithm and builds visual errors in set space. Each error is mainly related to one degree of freedom of the camera;...
Fastener assembly is a tedious and time-consuming work because operators have to check assembly manuals and find right fastener for each hole. Hence, this paper aims to develop a three-dimensional (3-D) projection system that projects assembly instruction onto the work piece surface directly to guide operators to assemble. However, in order to project the instruction accurately, the corresponding...
The existence of remnant particles negatively impacts the reliability of aerospace electronic equipments. The universal method to detect remnant particles is particle impact noise detection (PIND). Random vibration can be introduced to the PIND system to improve the detecting performance, and it can also provide acoustic and acceleration signals. In this paper, a new feature extraction method for...
In this paper, SIFT algorithm is combined with AdaBoost algorithm, and a method of feature matching based on multi-pose face is put forward. Firstly, the face region is extracted from multi-pose face images by AdaBoost. Secondly, SIFT characteristic vectors of the main regions are matched. The images of the ORL face DB are used in this paper, and some pictures taken in the experiment are used too...
In this paper, we present a keyword extraction methodology from handwritten Chinese document image based on matching and voting of the local topological structure. In the process, a handwritten keyword image is used as template, from which the local topological structure features of each character pixel are extracted, including crossing number, direction angle, gravity direction and gravity distance...
It is an important approach to locate the centre in circle projection, the accuracy and speed of the central location will affect the recognition rate and the speed of the character recognition. In order to improve the accuracy and speed of the central location, this paper proposes a new algorithm, based on the theory of the triangles and quadrilateral. And also this algorithm implements an invariant...
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