iDet3D: Towards Efficient Interactive Object Detection for LiDAR Point Clouds

• URL: http://arxiv.org/abs/2312.15449v1
• Date: Sun, 24 Dec 2023 09:59:46 GMT
• Title: iDet3D: Towards Efficient Interactive Object Detection for LiDAR Point Clouds
• Authors: Dongmin Choi, Wonwoo Cho, Kangyeol Kim, Jaegul Choo
• Abstract summary: We propose iDet3D, an efficient interactive 3D object detector. iDet3D supports a user-friendly 2D interface, which can ease the cognitive burden of exploring 3D space. We show that our method can construct precise annotations in a few clicks.
• Score: 39.261055567560724
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Accurately annotating multiple 3D objects in LiDAR scenes is laborious and challenging. While a few previous studies have attempted to leverage semi-automatic methods for cost-effective bounding box annotation, such methods have limitations in efficiently handling numerous multi-class objects. To effectively accelerate 3D annotation pipelines, we propose iDet3D, an efficient interactive 3D object detector. Supporting a user-friendly 2D interface, which can ease the cognitive burden of exploring 3D space to provide click interactions, iDet3D enables users to annotate the entire objects in each scene with minimal interactions. Taking the sparse nature of 3D point clouds into account, we design a negative click simulation (NCS) to improve accuracy by reducing false-positive predictions. In addition, iDet3D incorporates two click propagation techniques to take full advantage of user interactions: (1) dense click guidance (DCG) for keeping user-provided information throughout the network and (2) spatial click propagation (SCP) for detecting other instances of the same class based on the user-specified objects. Through our extensive experiments, we present that our method can construct precise annotations in a few clicks, which shows the practicality as an efficient annotation tool for 3D object detection.

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