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【ICCV Workshop 2021】基于密度图的小目标检测:Coarse-grained Density Map Guided Object Detection in Aerial Images
2022-06-24 00:32:00 【BIT可达鸭】
没找到开源代码
简介:
航拍图像中的目标检测具有挑战性,原因至少有两个:(1)相对于高分辨率的航空图像,大多数目标都是小尺度的;(2)目标位置分布不均匀,使得检测效率低下。
针对上述两个问题,本文提出了一种新的网络,即粗粒度密度图网络(CDMNet)来解决这些问题。具体来说,作者将密度映射格式化为粗粒度的形式,并设计了一个轻量级的双任务密度估计网络。
粗粒度的密度图不仅可以描述对象的分布,还可以聚类对象,以量化规模和减少计算。
此外,作者还提出了一种由密度映射引导的聚类区域生成算法,将输入的图像裁剪成多个子区域,表示聚类,其中对象在合理的尺度上进行调整。
作者还改进了马赛克数据增强,以缓解训练过程中的前景背景和类别不平衡问题。
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