基于曲线拟合函数和GPU的地形无缝渲染

发布时间：2018-05-20 00:10

本文选题：曲线拟合 + 最小二乘法　；参考：《计算机应用研究》2017年09期

【摘要】：针对大规模地形实时渲染时不同层次细节过渡产生的画面不连续性问题,以及计算机实时调度大量数据而造成帧速较低的问题,提出了一种基于曲线拟合函数和GPU加速的地形实时绘制方法。根据采样数据点采用最小二乘法构造曲线拟合函数,通过曲线函数控制不同层次网格顶点的布局,从而消除因层次细节变化产生的裂缝。同时根据分辨率不同构建金字塔模型,针对不同层次细节区域数据进行有损或无损压缩,依据视点运动预测实时解压相应数据。实验表明,该方法在地形实时渲染阶段,在保证了较高帧速率的同时,利用视点运动预测保证了帧速率变化小,有效地消除了裂缝,增强了画面效果。
[Abstract]:In view of the problem of discontinuity in the transition of different layers of detail during real-time rendering of large scale terrain and the problem of low frame rate caused by the real-time scheduling of large amounts of data by computer, a real-time rendering method based on curve fitting function and GPU acceleration is proposed. The least squares method is used to construct the curve according to the sampling data points. The fitting function is used to control the layout of the vertex of different levels of grid through the curve function, thus eliminating the cracks caused by the changes in the level of detail. At the same time, the Pyramid model is constructed according to the difference of resolution. At the stage of real-time terrain rendering, while ensuring the higher frame rate, using the view point motion prediction to ensure that the rate of frame rate change is small, effectively eliminate the cracks and enhance the effect of the picture.
【作者单位】：太原理工大学计算机科学与技术学院;
【基金】：虚拟现实技术与系统国家重点实验室开放基金资助项目(BUAA-VR-15KF-17)
【分类号】：P208;TP391.41

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