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| 1 | The recognition algorithm for lane line of urban road based on feature analysis显示文摘The building information model/modeling(BIM) technology is currently applied in a broad range of applications and research for facility management(FM), while the BIM-based mobile FM is difficult owing to various factors and environments. For example, the mobile applications usually require frequent cross-equipment compatibility. This paper proposes a reasonable BIM-based FM cross-platform framework and develops a mobile application on the basis of an existing BIM-based FM system. The developed mobile application is applied in a case study of a metro station project in Guangzhou to verify its effectiveness in FM practice. It helps maintenance staff in viewing BIMs, accessing related information, and updating maintenance records in a unique platform. The test results demonstrate that the proposed BIM-based cross-platform framework meet the FM application requirements and supports the extension of FM functions. | Xiao Xiao Che Xiangjiu | 2016 | Computer Aided Drafting,Design and Manufacturing2016，26，2： | 2 |
| 2 | G^1 continuity conditions of adjacent NURBS surfaces显示文摘 | Che Xiangjiu Liang Xuezhang Li Qiang | 2005 | Computer Aided Geometric Design2005，22，4： | 1 |
| 3 | Improvement of Escape Time Algorithm by No-Escape-Point显示文摘 | Shuai Liu Xiangjiu Che Zhengxuan Wang | 2011 | Journal of Computers2011，，8： | 1 |
| 4 | G 1 continuity conditions of adjacent NURBS surfaces显示文摘 | Xiangjiu Che Xuezhang Liang Qiang Li | 2005 | Computer Aided Geometric Design2005，，4： | 1 |
| 5 | A new method of mesh simplification for 3-Dimension terrain using Laplace operator显示文摘This paper proposes a new method to simplify mesh in 3D terrain.The 3D terrain is presented by digital elevation model.First,Laplace operator is introduced to calculate sharp degree of mesh point,which indicates the variation trend of the terrain.Through setting a critical value of sharp degree,feature points are selected.Second,critical mesh points are extracted by an recursive process,and constitute the simplified mesh.Third,the algorithm of linear-square interpolation is employed to restore the characteristics of the terrain.Last,the terrain is rendered with color and texture.The experimental results demonstrate that this method can compress data by 16% and the error is lower than 10%. | Zuo Wenpin Che Xiangjiu | 2012 | Computer Aided Drafting,Design and Manufacturing2012，22，1： | 1 |
| 6 | GPU-based 3D model rendering of chinese ink painting显示文摘In computer graphics, non-photorealistic rendering(NPR) is an important branch. NPR technology is to achieve a variety of artistic effects through the computer, such as oil painting, cartoon, watercolor and other effects. The purpose of this paper is to automatically convert the 3D model into two-dimensional Chinese ink painting effect on graphics processing unit(GPU), and has improved the traditional algorithm that has some lacks of rendering effect. The algorithm is divided into two major steps: contour line rendering, and interior rendering. For contour line rendering, on the basis of the traditional extraction of contours, this paper adds self-bold, particle diffusion and other steps. For interior rendering, on the basis of the traditional layered rendering of diffuse lighting, two methods are added. The first method is based on the mean filtering, and the filter kernel is stratified by the principle of percentage-closer soft shadows(PCSS). The second method is Noise texture mapping, to obtain an ink diffusion effect. | Deng Siyu Che Xiangjiu | 2017 | Computer Aided Drafting,Design and Manufacturing2017，27，1： | 0 |
| 7 | Fast B-spline surface extraction algorithm of seismic volume data on GPU显示文摘In the process of seismic data interpretation,the extraction of a horizon or a fault is generally needed.In this paper we present a fast extraction method.First select some feature points interactively,then reconstruct the surface according to the selected feature points by using B-spline interpolation curve or surface.In order to solve the error-drawing problem appeared in the process of interactive rendering,which is caused by the change of sampling interval as the view point changes,we combine shear-warp and splatting algorithm to render the surface.The rendering of seismic data and specific surface in our work are achieved on GPU platform using CUDA programming language,which make it able to meet the requirements of real-time rendering. | LIN Senqiao CHE Xiangjiu GUO Xiaoxin | 2013 | Computer Aided Drafting,Design and Manufacturing2013，23，1： | 0 |
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