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- 2018
基于有效区域约束的GPU-CPU协同影像快拼方法
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Abstract:
提出了一种以有效区域约束的Voronoi图为拼接线网络，利用GPU-CPU协同处理航空影像快速拼接方法。首先，基于成像有效区域生成有效区域约束的Voronoi图拼接线网络，解决了传统Voronoi图拼接线网络在低重叠度条件下拼接后影像局部区域不被覆盖的问题，然后利用GPU-CPU协同处理将正射纠正嵌入到影像拼接的过程中，并且只对每张影像的有效区域进行纠正，再通过选择配置优化和存储层次性优化进一步提高拼接效率。实验表明，对237张高分辨率航空影像进行快速正射纠正和拼接，本文算法较传统先纠正再拼接的方法效率提高近20倍，同时保证很高的拼接精度，可以满足应急测绘要求
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