基于光线投射算法的医学图像三维重建研究

Study on 3D reconstruction of medical image based on ray casting

医学图像的三维重建是医学图像可视化的关键技术之一,本文通过对体绘制不同重建方法的比较,提出了以光线投射算法为基础的医学图像三维重建的方案;并改变了以往以点进行的采样方式,提出了以段进行采样的采样方式,结合图像合成加速算子,加速了图像的绘制速度。将采样加速与合成加速结合并在GPU上实现绘制,得到绘制速度快、绘制图像质量高的效果。

In this paper,by comparison of different reconstruction algorithms for volume rendering,we put forward Ray Casting algorithm as the scheme of 3D reconstruction of medical image.The image synthesis operator is improved and combined with the section sampling mode to reconstruct the image.Then the images are rendered on GPU.By using improved operator,we not only accelerate the rendering speed,but also improve the quality of rendering images.