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Image rotation algorithm in image processing has been widely used in engineering applications, and a practical traffic video image rotation algorithm is helpful for the traffic monitoring system to analyze the video images, which would promote visualization and intelligent transportation system applications development. Based on traffic engineering practice, this paper mainly studies an image rotation...
The generalized Laguerre-generalized Hermite mixed spectral method is developed. Various orthogonal projections are investigated. Some mixed approximation results are established. As an example of their important applications, a mixed spectral scheme is proposed for two-dimensional non-isotropic heat conduction equation. Its convergence is proved. Numerical results demonstrate the high accuracy of...
We provide a vision-related image deformation method based on Moving Least Squares (MLS) and visual saliency map. As the improvement of image deformation using MLS, we propose a new weight function to improve the MLS image deformation. A visual saliency-related deformation weight definition is proposed to ensure deformations are more easily to kept local shape on high visual saliency region and changed...
Coons patch is important element in 3D modeling and simulation. In order to use general framework of GPU to constitute coons patches, one decompose method of the traditional coons patches was developed. The result shows that runtime of GPU based algorithm tend to increase slowly while the number of interpolation points increase.
To meet the need of advanced manufacturing technique, an open computer numerical control (CNC) software package for CNC machining is developed. Module library of the software package was of tree structure with a depth of 5. Terminal nodes of the tree were module units with unambiguous functions. Module units which dealt with real-time tasks were developed adopting real-time dynamical linked library...
The current 5-axis coordinated linear interpolation method results in low-speed, low-accuracy and enormous numerical control (NC) files in sculptured surface machining. An instruction format with AKIMA spline curves suitable for 5-axis coordinated real-time interpolation is presented by making use of the advantages of AKIMA curves to represent spatial curves. Curve through position vectors in the...
In this paper, a motion controller for computerized numerical control (CNC) machining is developed in accordance with open modular architecture controllers (OMAC) agreement and industry standards. The motion controller is a software package running on personal computer. It is developed based on modular structure adopting hierarchic organization mode. After analysis of software and hardware structure...
Using the advantage of polynomial spline interpolation to represent spatial curves with good approximation effect and mature technology, an instruction format with polynomial spline curves, which is suitability for five axes coordinated real-time interpolation, is presented against the current five axes coordinated linear interpolation method with drawbacks of low-speed, low-accuracy and great NC...
Although texture mapping is a common technique for adding apparent surface detail to 3-D objects, it lacks the capability to represent the bumpy detail and the motion parallax effect. In this paper, we propose normal vector shift, a simple rendering method to motion parallax effects on a surface with small detail. This method can be enhanced the quality of the rendering result with graphics hardware.
This paper presents boundary polynomial point interpolation mesh less method (BPPIM) and boundary radial point interpolation meshless method (BRPIM) based on polynomial basis function (PBF) and radial basis function (RBF) respectively for transient eddy current analysis, and their interpolation shape functions satisfy the Kronecker delta function, thus the essential boundary conditions can be directly...
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