3D object detection plays an important role in a large number of real-world
applications. It requires us to estimate the localizations and the orientations
of 3D objects in real scenes. In this paper, we present a new network
architecture which focuses on utilizing the front view images and frustum point
clouds to generate 3D detection results. On the one hand, a PointSIFT module is
utilized to improve the performance of 3D segmentation. It can capture the
information from different orientations in space and the robustness to
different scale shapes. On the other hand, our network obtains the useful
features and suppresses the features with less information by a SENet module.
This module reweights channel features and estimates the 3D bounding boxes more
effectively. Our method is evaluated on both KITTI dataset for outdoor scenes
and SUN-RGBD dataset for indoor scenes. The experimental results illustrate
that our method achieves better performance than the state-of-the-art methods
especially when point clouds are highly sparse.

本文介绍了一种新型网络架构，利用前视图像和视锥形点云生成三维检测结果，使用 PointSIFT 模块和 SENet 模块来提高三维分割的性能和有效地估计三维边界框，实验结果表明该方法在使用高度稀疏的点云时比现有方法表现更优，广泛应用于室内和室外的实际场景中的三维物体检测。