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This paper proposes a fast and real-time background update mechanism for vehicle detection in urban city. The roads of urban city are relatively clean from the perspective of digital image which is helpful for developing a specialized fast algorithm of background update. However, frequent congestion in urban roads poses a great challenge on constructing a reliable real-time background model. In this...
In this paper, the static stiffness of cable-driven wrist robotic rehabilitor (CDWRR) in its whole workspace is analyzed. A total stiffness matrix of this device consists of the exoskeleton stiffness model and the human arm stiffness model, which is obtained by using an equivalent stiffness model of exoskeleton and assuming a series of simplification of human arm. The analysis on stiffness was made...
Tooth segmentation on dental model is an essential step of computer-aided-design systems for orthodontic virtual treatment planning. However, efficiently identifying cutting boundary to separate tooth from dental model still remains a challenge, due to various geometrical shapes of teeth, complex tooth arrangements and varying degrees of crowding problem. Most segmentation approaches presented before...
In this paper an efficient solution of large scale, interactive terrain visualization is proposed based on graphic hardware. The method of multi-thread is adopted to resolve the bottle-neck problem of data fetching from the external memory, and the methods of level of details (LODs) based on view-dependent and mesh rendering in graphics programmable units (GPU) are used to ensure visual quality and...
The display of realistic ocean environment is one of the most important research fields in computer graphics. In this work we present a practical algorithm for real-time rendering of realistic and unbounded ocean. Relying on the newest features of graphics programmable units (GPU), our method adopts parallel computing technique for generating ocean surface in GPU and uses efficient shading trips for...
Research on the neutral gas diffusion simulation, improved the Gaussian plume model which simulate under continuous leakage status. Add the terrain factor to the model; calculate with digital elevation model (DEM) in order to verify the idea. Using geographic information system (GIS) control technology developed chemical gas leakage simulate system, take the ammonia diffusion for instance, dynamic...
This paper presents a novel non-rigid registration method for augmented reality applications using AAM and factorization method. The method can be divided into two stages: offline construction of 3D shape basis and online estimation of the 3D pose parameters together with the 3D shape coefficients. In offline stage, we get the training data with the use of the AAM algorithm, then we use factorization...
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