【摘要】 体绘制流程中,梯度在数据分类和明暗计算中都要用到,因此快速准确的梯度估算对高质量的体绘制算法至关重要。在分析了现有估算算法的基础上,通过构造等势面来计算梯度,并将其应用于光线投射法中,取得了较好的效果。更多还原

【Abstract】 During volume rendering, gradient will be used both on the procedure Classification and Shading. So rapidity and accuracy of gradient estimation is important to high quality rendering algorithm. This paper analyzes several methods of gradient estimation, then introduces a new method to compute gradient through potential function. At last, we implicate the method in the rendering of raycasting principle,and the result shows it is efficacious for reconstruction.更多还原