An Unsupervised Domain Adaptation Scheme for Single-Stage Artwork Recognition in Cultural Sites

• URL: http://arxiv.org/abs/2008.01882v3
• Date: Mon, 21 Dec 2020 20:37:19 GMT
• Title: An Unsupervised Domain Adaptation Scheme for Single-Stage Artwork Recognition in Cultural Sites
• Authors: Giovanni Pasqualino and Antonino Furnari and Giovanni Signorello and Giovanni Maria Farinella
• Abstract summary: We consider the problem of Unsupervised Domain Adaptation for object detection in cultural sites. We create a new dataset containing both synthetic and real images of 16 different artworks. We propose a new method which builds on RetinaNet and feature alignment that we called DA-RetinaNet.
• Score: 20.99718135562034
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recognizing artworks in a cultural site using images acquired from the user's point of view (First Person Vision) allows to build interesting applications for both the visitors and the site managers. However, current object detection algorithms working in fully supervised settings need to be trained with large quantities of labeled data, whose collection requires a lot of times and high costs in order to achieve good performance. Using synthetic data generated from the 3D model of the cultural site to train the algorithms can reduce these costs. On the other hand, when these models are tested with real images, a significant drop in performance is observed due to the differences between real and synthetic images. In this study we consider the problem of Unsupervised Domain Adaptation for object detection in cultural sites. To address this problem, we created a new dataset containing both synthetic and real images of 16 different artworks. We hence investigated different domain adaptation techniques based on one-stage and two-stage object detector, image-to-image translation and feature alignment. Based on the observation that single-stage detectors are more robust to the domain shift in the considered settings, we proposed a new method which builds on RetinaNet and feature alignment that we called DA-RetinaNet. The proposed approach achieves better results than compared methods on the proposed dataset and on Cityscapes. To support research in this field we release the dataset at the following link https://iplab.dmi.unict.it/EGO-CH-OBJ-UDA/ and the code of the proposed architecture at https://github.com/fpv-iplab/DA-RetinaNet.

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