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arXiv 2302.06556cs.CVcs.LG
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VA-DepthNet:单图像深度预测的变分方法

VA-DepthNet: A Variational Approach to Single Image Depth Prediction

ETH Zürich(苏黎世联邦理工学院);UESTC(电子科技大学);University of Würzburg(维尔茨堡大学);KU Leuven(鲁汶大学)

Ce Liu, Suryansh Kumar, Shuhang Gu, Radu Timofte, Luc Van Gool

摘要:

我们介绍了VA-DepthNet,一个简单,有效,准确的深度神经网络方法的单图像深度预测(SIDP)问题。建议的方法主张使用经典的一阶变分约束这个问题。虽然用于SIDP的最先进的深度神经网络方法在监督设置中从图像学习场景深度,但它们通常忽略刚性场景空间中的宝贵不变性和先验,例如场景的规则性。本文的主要贡献是揭示了SIDP任务的神经网络设计中的经典和有理有据的变分约束的好处。结果表明,施加一阶变分约束的场景空间与流行的编码器-解码器为基础的网络架构设计提供了良好的结果监督SIDP任务。所施加的一阶变分约束使得网络知道场景空间中的深度梯度,即,规律性本文通过对几个基准数据集(如KITTI、NYU Depth V2和SUN RGB-D)进行广泛的评估和消融分析,证明了所提出方法的实用性。与现有技术相比,测试时的VA-DepthNet在深度预测精度方面显示出相当大的改进,并且在场景空间中的高频区域也是准确的。在撰写本文时,我们的方法-标记为VA-DepthNet,在KITTI深度预测评估集基准上进行测试时,显示了最先进的结果,并且是性能最好的已发布方法。

英文摘要:

We introduce VA-DepthNet, a simple, effective, and accurate deep neural network approach for the single-image depth prediction (SIDP) problem. The proposed approach advocates using classical first-order variational constraints for this problem. While state-of-the-art deep neural network methods for SIDP learn the scene depth from images in a supervised setting, they often overlook the invaluable invariances and priors in the rigid scene space, such as the regularity of the scene. The paper's main contribution is to reveal the benefit of classical and well-founded variational constraints in the neural network design for the SIDP task. It is shown that imposing first-order variational constraints in the scene space together with popular encoder-decoder-based network architecture design provides excellent results for the supervised SIDP task. The imposed first-order variational constraint makes the network aware of the depth gradient in the scene space, i.e., regularity. The paper demonstrates the usefulness of the proposed approach via extensive evaluation and ablation analysis over several benchmark datasets, such as KITTI, NYU Depth V2, and SUN RGB-D. The VA-DepthNet at test time shows considerable improvements in depth prediction accuracy compared to the prior art and is accurate also at high-frequency regions in the scene space. At the time of writing this paper, our method -- labeled as VA-DepthNet, when tested on the KITTI depth-prediction evaluation set benchmarks, shows state-of-the-art results, and is the top-performing published approach.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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