Advances in Deep Concealed Scene Understanding
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Concealed scene understanding (CSU) is a hot computer vision topic aiming to perceive objects with camouflaged properties. The current boom in its advanced techniques and novel applications makes it timely to provide an up-to-date survey to enable researchers to understand the global picture of the CSU field, including both current achievements and major challenges. This paper makes four contributions: (1) For the first time, we present a comprehensive survey of the deep learning techniques oriented at CSU, including a background with its taxonomy, task-unique challenges, and a review of its developments in the deep learning era via surveying existing datasets and deep techniques. (2) For a quantitative comparison of the state-of-the-art, we contribute the largest and latest benchmark for Concealed Object Segmentation (COS). (3) To evaluate the transferability of deep CSU in practical scenarios, we re-organize the largest concealed defect segmentation dataset termed CDS2K with the hard cases from diversified industrial scenarios, on which we construct a comprehensive benchmark. (4) We discuss open problems and potential research directions for this community. Our code and datasets are available at https://github.com/DengPingFan/CSU, which will be updated continuously to watch and summarize the advancements in this rapidly evolving field.
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