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WingkeungM / RFFS-Net

Code for "Beyond single receptive field: A receptive field fusion-and-stratification network for airborne laser scanning point cloud classification" in ISPRS Journal of Photogrammetry and Remote Sensing (ISPRS Journal Ph & RS).
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一个关于数据集处理的问题 #5

Closed xsf777 closed 1 year ago

xsf777 commented 2 years ago

论文中提到你是讲数据集均匀分块进行处理，但是代码中确却是在随机的区域采样​4096个点，这是为什么​？​

WingkeungM commented 2 years ago

First, the limit of memory can only accept some points as the input of the network, so we choose to input 4096 or 2048 points to feed the network. Second, the block processing is to sample 4096 or 2048 points from each block. If sampling from the global area, it will lead to poor correlation between points.