The paper studies optical flow methods on colour frames captured by a digital video camera. The paper reviews related work, specifies some new colour optical flow constraints and reports on experimental evaluations for one image sequence. 1 Department of Computer Science, University of Western Ontario, London, Ontario, Canada, N6A 5B7, [email protected] 2 Center for Image Technology and Robotic...

In this paper, we present the details of a Visual System for Hand Pose Classification, utilising an adaptation of the traditional Colour Predicate approach to skin detection, 1st and 2nd Order Central Moments and Principal Component Analysis. Additionally, discussed are a proposed semi-automated method for the training of the Predicate, in which a simplified logarithmic hue is used to threshold...

This paper reviews major steps in designing, producing and applying cylindrical panoramic cameras. Basically such a camera is characterized by rotating linear sensors capturing one image column at a time. Extremely high numbers of pixels per line allow capturing of super-high resolution panoramic images. These can be used for stereo visualisation and stereo reconstruction, as will be discussed ...

This paper proposes an approach for solving the parameter determination problem for a stereoscopic panorama camera. Image acquisition parameters have to be calculated under given constraints defined by application requirements, the image acquisition model, and specifications of the targeted 3D scenes. Previous studies on stereoscopic panorama imaging, such as [IYT92, MB95b, WHK99b, PPB00, SKS99...

Video sequences capturing real scenes may be interpreted with respect to a dominant plane which is a planar surface covering ‘a majority’ of pixels in an image of a video sequence, i.e. that planar surface which is represented in the image by a maximum number of pixels. In this paper, we propose an algorithm for the detection of dominant planes from optical flow fields caused by camera motion i...

This paper presents and analyzes four finite difference methods for linear shape from shading problem. Comparisons of accuracy, solvability, stability and convergence of these methods indicate that the weighted semi-implicit method and the box method are better than the other ones because they are easily calculated, more accurate, faster in convergence and unconditionally stable. 1 Center for I...

Regularly gridded data in Euclidean 3-space are assumed to be digitizations of regular solids with respect to a chosen grid resolution. Gauss and Jordan introduced different digitization schemes, and the Gauss center point scheme is used in this paper. The surface area of regular solids can be expressed finitely in terms of standard functions for specific sets only, but it is well defined by tr...