Unsupervised Image-generation Enhanced Adaptation for Object Detection in Thermal images

• URL: http://arxiv.org/abs/2002.06770v3
• Date: Mon, 1 Nov 2021 00:49:45 GMT
• Title: Unsupervised Image-generation Enhanced Adaptation for Object Detection in Thermal images
• Authors: Peng Liu, Fuyu Li, Wanyi Li
• Abstract summary: This paper proposes an unsupervised image-generation enhanced adaptation method for object detection in thermal images. To reduce the gap between visible domain and thermal domain, the proposed method manages to generate simulated fake thermal images. Experiments demonstrate the effectiveness and superiority of the proposed method.
• Score: 4.810743887667828
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Object detection in thermal images is an important computer vision task and has many applications such as unmanned vehicles, robotics, surveillance and night vision. Deep learning based detectors have achieved major progress, which usually need large amount of labelled training data. However, labelled data for object detection in thermal images is scarce and expensive to collect. How to take advantage of the large number labelled visible images and adapt them into thermal image domain, is expected to solve. This paper proposes an unsupervised image-generation enhanced adaptation method for object detection in thermal images. To reduce the gap between visible domain and thermal domain, the proposed method manages to generate simulated fake thermal images that are similar to the target images, and preserves the annotation information of the visible source domain. The image generation includes a CycleGAN based image-to-image translation and an intensity inversion transformation. Generated fake thermal images are used as renewed source domain. And then the off-the-shelf Domain Adaptive Faster RCNN is utilized to reduce the gap between generated intermediate domain and the thermal target domain. Experiments demonstrate the effectiveness and superiority of the proposed method.

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