Self-supervised Learning for Efficient Object Detection
Abstract: Self-supervised learning has become a prominent approach in pre-training Convolutional Neural Networks for computer vision. These methods are able to achieve state-of-the-art representation learning with unlabeled datasets. In this thesis, we apply Self-supervised Learning to the object detection problem. Previous methods have used large networks that are not suitable for embedded applications, so our goal was to train lightweight networks that can reach the accuracy of supervised learning. We used MoCo as a baseline for pre-training a ResNet-18 encoder and finetuned it on the COCO object detection task using a RetinaNet object detector. We evaluated our method based on the COCO evaluation metric with several additions to the baseline method. Our results show that lightweight networks can be trained by self-supervised learning and reach the accuracy of the supervised learning pre-training.
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