基于OpenMP的正射影像纠正

An ortho-rectificaiton method based on OpenMP

针对正射影像纠正计算密集的特点,提出一种基于OpenMP的正射纠正方法,对正射影像纠正过程中的两个关键步骤:投影计算和双线性重采样进行并行加速。采用数码航空影像和对应的地形数据进行试验,并且利用双核和四核计算机进行并行性能评价。试验结果表明,基于OpenMP的正射纠正能够有效提高正射影像纠正的效率。

Aiming at the computationally intensive orthophoto, it proposes an OpenMP-based image orthorectification method, which falls into two key steps： projection calculation and bilinear resampling have carried out a parallel speedup. Papers using digital aerial imagery and terrain data corresponding tested, and the use of dual-core and quad-core parallel computer performance evaluation results show that OpenMP-based ortho-rectification can effectively improve the efficiency of orthophoto rectified.