基于多媒体技术的快速并行体绘制

A Fast Parallel Volume Render Algorithm based on Multimedia Technology

体绘制的成像速度一直是影响其发展的关键因素。我们提出了一种基于多媒体单指令多数据(single instruction multiple data,SIMD)技术的加速算法。在保证成像质量的前提下,通过采用MMX、SSE、SSE2指令,分别加速光线扫描、采样和坐标变换等部分,使得光线跟踪算法的成像速度提高了3～6倍。实验表明,该算法具有成像速度快、成像稳定等显著优势,具有很高的应用价值。

Rendering speed is a key factor in the development of Volume Rendering. An accelerated volume rendering algorithm based on multimedia single instruction multiple data（SIMD） technology was presented in this paper. We separated Volume Rendering into the parts of my scanning, sampling and coordinate transform, and then accelerated them by MMX, SSE and SSE2 instructions. The speed was three to six times faster than the traditional algorithm. Compared to the traditional algorithm, the new algorithm has the advantages of fast rendering speed and stable imaging quality. So it has great value in the application of imaging processing.