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arXiv 2512.13147cs.CV

StarryGazer:利用单目深度估计模型进行领域无关的单张深度图像补全

StarryGazer: Leveraging Monocular Depth Estimation Models for Domain-Agnostic Single Depth Image Completion

IPAI, Seoul National University(IPAI,首尔国立大学);Department of Electrical and Computer Engineering, ASRI, Seoul National University(电气与计算机工程系,ASRI,首尔国立大学)

Sangmin Hong, Suyoung Lee, Kyoung Mu Lee

AI总结:

StarryGazer通过利用大单目深度估计模型,无需真实深度数据,从单张稀疏深度图和RGB图像生成密集深度图,提升补全效果。

摘要:

深度补全问题涉及从单张稀疏深度图和RGB图像预测密集深度图。已提出无监督深度补全方法用于各种数据集,其中真实深度数据不可用且监督方法无法应用。然而,这些模型需要辅助数据来估计深度值,这与现实场景相去甚远。单目深度估计(MDE)模型可以从单张图像生成合理的相对深度图,但没有工作将稀疏深度图与MDE结合用于深度补全;对深度图进行简单的仿射变换会产生高误差,因为MDE在估计物体间深度差异时不够准确。我们引入了StarryGazer,一个领域无关的框架,该框架利用大MDE模型的力量,从单张稀疏深度图和RGB图像预测密集深度图,而无需依赖真实深度数据。首先,我们使用预训练的MDE模型生成相对深度图。这些图像被分割并随机重新缩放,形成合成对,用于生成密集的伪真实数据和对应的稀疏深度。一个改进网络通过这些合成对进行训练,结合相对深度图和RGB图像以提高模型的准确性和鲁棒性。StarryGazer在各种数据集上优于现有无监督方法和转换MDE结果,证明了我们的框架在利用MDE模型的同时,能够适当利用稀疏深度信息来修复误差。

英文摘要:

The problem of depth completion involves predicting a dense depth image from a single sparse depth map and an RGB image. Unsupervised depth completion methods have been proposed for various datasets where ground truth depth data is unavailable and supervised methods cannot be applied. However, these models require auxiliary data to estimate depth values, which is far from real scenarios. Monocular depth estimation (MDE) models can produce a plausible relative depth map from a single image, but there is no work to properly combine the sparse depth map with MDE for depth completion; a simple affine transformation to the depth map will yield a high error since MDE are inaccurate at estimating depth difference between objects. We introduce StarryGazer, a domain-agnostic framework that predicts dense depth images from a single sparse depth image and an RGB image without relying on ground-truth depth by leveraging the power of large MDE models. First, we employ a pre-trained MDE model to produce relative depth images. These images are segmented and randomly rescaled to form synthetic pairs for dense pseudo-ground truth and corresponding sparse depths. A refinement network is trained with the synthetic pairs, incorporating the relative depth maps and RGB images to improve the model's accuracy and robustness. StarryGazer shows superior results over existing unsupervised methods and transformed MDE results on various datasets, demonstrating that our framework exploits the power of MDE models while appropriately fixing errors using sparse depth information.

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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