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PlaneSegNet: Fast and Robust Plane Estimation Using a Single-stage Instance Segmentation CNN
PlaneSegNet: Fast and Robust Plane Estimation Using a Single-stage Instance Segmentation CNN
Yaxu Xie, Jason Raphael Rambach, Fangwen Shu, Didier Stricker
IEEE. IEEE International Conference on Robotics and Automation (ICRA-2021) May 30-June 5 Xi'an China IEEE 2021 .
- Abstract:
- Instance segmentation of planar regions in indoor scenes benefits visual SLAM and other applications such as augmented reality (AR) where scene understanding is required. Existing methods built upon two-stage frameworks show satisfactory accuracy but are limited by low frame rates. In this work, we propose a real-time deep neural architecture that estimates piece-wise planar regions from a single RGB image. Our model employs a variant of a fast single-stage CNN architecture to segment plane instances. Considering the par- ticularity of the target detected, we propose Fast Feature Non- maximum Suppression (FF-NMS) to reduce the suppression errors resulted from overlapping bounding boxes of planes. We also utilize a Residual Feature Augmentation module in the Feature Pyramid Network (FPN). Our method achieves significantly higher frame-rates and comparable segmentation accuracy against two-stage methods. We automatically label over 70,000 images as ground truth from the Stanford 2D-3D- Semantics dataset. Moreover, we incorporate our method with a state-of-the-art planar SLAM and validate its benefits.