PointSee: Image Enhances Point Cloud
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Abstract (arXiv)
There is a trend to fuse multi-modal information for 3D object detection (3OD). However, the challenging problems of low lightweightness, poor flexibility of plug-and-play, and inaccurate alignment of features are still not well-solved, when designing multi-modal fusion newtorks. We propose PointSee, a lightweight, flexible and effective multi-modal fusion solution to facilitate various 3OD networks by semantic feature enhancement of LiDAR point clouds assembled with scene images. Beyond the existing wisdom of 3OD, PointSee consists of a hidden module (HM) and a seen module (SM): HM decorates LiDAR point clouds using 2D image information in an offline fusion manner, leading to minimal or even no adaptations of existing 3OD networks; SM further enriches the LiDAR point clouds by acquiring point-wise representative semantic features, leading to enhanced performance of existing 3OD networks. Besides the new architecture of PointSee, we propose a simple yet efficient training strategy, to ease the potential inaccurate regressions of 2D object detection networks. Extensive experiments on the popular outdoor/indoor benchmarks show numerical improvements of our PointSee over twenty-two state-of-the-arts.
Key facts. Cited by 5 papers in the map (data through 7 Oct 2026). Builds on 57 of its 78 references that are in the map. First posted on arXiv 3 Nov 2022.
Builds on
57 of 78 references.
References · 57
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38 more
- 2017VoxelNet: End-to-End Learning for Point Cloud Based 3D Object Detectioncited by 1,323
- 2019Objects as Pointscited by 1,172
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50 most cited of 57 All 57 (JSON)
Built on by
Citing papers per year: 2023: 2; 2024: 1; 2025: 2.
5 papers.
- 2023PointGame: Geometrically and Adaptively Masked Auto-Encoder on Point Cloudscited by 4
- 2023PointSmile: Point Self-supervised Learning via Curriculum Mutual Informationcited by 2
- 2025SIM-Net: A Multimodal Fusion Network Using Inferred 3D Object Shape Point Clouds from RGB Images for 2D Classificationcited by 2
- 2024PointCG: Self-supervised Point Cloud Learning via Joint Completion and Generationcited by 0
- 2025PVNet: Point-Voxel Interaction LiDAR Scene Upsampling Via Diffusion Modelscited by 0
- 2025PVNet: Point-Voxel Interaction LiDAR Scene Upsampling Via Diffusion Models23 Aug 2025
- 2025SIM-Net: A Multimodal Fusion Network Using Inferred 3D Object Shape Point Clouds from RGB Images for 2D Classification23 Jun 2025
- 2024PointCG: Self-supervised Point Cloud Learning via Joint Completion and Generation9 Nov 2024
- 2023PointGame: Geometrically and Adaptively Masked Auto-Encoder on Point Clouds23 Mar 2023
- 2023PointSmile: Point Self-supervised Learning via Curriculum Mutual Information30 Jan 2023