摘要： 提出基于图形处理单元(GPU)的遥感影像IHS融合算法，利用图形硬件的可编程渲染器和其处理数据的并行性，把IHS的正反变换映射到GPU中进行计算。应用RTT和MRT技术实现IHS正反变换中3个分量的并行渲染输出，加速计算过程。实验结果表明，在数据量较大时，该算法的处理速度比基于CPU的算法速度更快。

关键词: 图形处理单元, 渲染到纹理, 多渲染目标

Abstract: This paper designs a remote sensing image data fusion algorithm based on Graphics Processing Unit(GPU) using the programmability of GPU which is a parallel vector processor, and both the IHS and the inverse IHS transform computation are mapped into GPU. It realizes parallel rendering and output of the three components of the IHS and the inverse IHS transform useing Render To Texture(RTT) and Multiple Render Targets(MTR) method to speed up the computation. Result shows that this algorithm on GPU is much faster than the previous CPU-based algorithm for large IHS transform.

Key words: Graphics Processing Unit(GPU), Render To Texture(RTT), Multiple Render Targets(MRT)

中图分类号: 

• TP391