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|a 10.1109/TIP.2024.3386403
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|a eng
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|a Bai, Jiayang
|e verfasserin
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|a GLPanoDepth
|b Global-to-Local Panoramic Depth Estimation
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|c 2024
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|a Date Revised 22.04.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Depth estimation is a fundamental task in many vision applications. With the popularity of omnidirectional cameras, it becomes a new trend to tackle this problem in the spherical space. In this paper, we propose a learning-based method for predicting dense depth values of a scene from a monocular omnidirectional image. An omnidirectional image has a full field-of-view, providing much more complete descriptions of the scene than perspective images. However, fully-convolutional networks that most current solutions rely on fail to capture rich global contexts from the panorama. To address this issue and also the distortion of equirectangular projection in the panorama, we propose Cubemap Vision Transformers (CViT), a new transformer-based architecture that can model long-range dependencies and extract distortion-free global features from the panorama. We show that cubemap vision transformers have a global receptive field at every stage and can provide globally coherent predictions for spherical signals. As a general architecture, it removes any restriction that has been imposed on the panorama in many other monocular panoramic depth estimation methods. To preserve important local features, we further design a convolution-based branch in our pipeline (dubbed GLPanoDepth) and fuse global features from cubemap vision transformers at multiple scales. This global-to-local strategy allows us to fully exploit useful global and local features in the panorama, achieving state-of-the-art performance in panoramic depth estimation
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|a Journal Article
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|a Qin, Haoyu
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|a Lai, Shuichang
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| 700 |
1 |
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|a Guo, Jie
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|a Guo, Yanwen
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|t IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
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|g 33(2024) vom: 24., Seite 2936-2949
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|u http://dx.doi.org/10.1109/TIP.2024.3386403
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