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- 2018
单张无人机影像水体高光自动检测与补偿方法
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Abstract:
无人机获取地面影像时，水体反射会导致影像中存在较为明显的水体高光，给数据处理带来一定困难并对DOM（digital orthophoto map）质量产生显著影响。提出了一种单张无人机影像水体高光自动检测与补偿方法，先基于高光分量对高光区域进行多尺度检测，再使用Grabcut算法对其边界进行优化；然后根据地物反射的几何与光谱特性建立决策树剔除非水体高光；接着精化高光区域，将附近的细碎高光点纳入到区域内；最后，使用提出的改进Criminisi算法对高光区域进行补偿。使用无人机影像对该方法的有效性进行验证，综合主观目视与PNSR（peak signal to noise ratio）、SSIM（structural similarity index）指数的客观评价结果，本文方法优于Mallick、Shen、Yoon等人的方法；使用Pix4Dmapper对高光处理前后的影像生成DOM，本文方法可以明显提高DOM质量
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