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arXiv 1809.04696cs.CV
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几何图像合成

Geometric Image Synthesis

University of Tübingen(蒂宾根大学);Heidelberg University(海德堡大学);MPI for Intelligent Systems(马克斯·普朗克智能系统研究所)

Hassan Abu Alhaija, Siva Karthik Mustikovela, Andreas Geiger, Carsten Rother

摘要:

从3D场景生成自然图像的任务一直是计算机图形学的长期目标。另一方面,深度神经网络的最新发展允许可训练的模型,这些模型可以在很少或不了解场景结构的情况下产生看起来自然的图像。虽然生成的图像通常由逼真的局部图案组成,但生成的图像的整体结构通常不一致。在这项工作中,我们提出了一种可训练的,几何感知的图像生成方法,利用各种类型的场景信息,包括几何和分割,创建逼真的自然图像,匹配所需的场景结构。我们的几何一致性图像合成方法是一种深度神经网络,称为几何图像合成(GIS)框架,它保留了可训练方法的优点,例如,可区分性和自适应性,但同时,向现代图形渲染引擎的通用性,控制和质量输出迈出了一步。我们利用GIS框架插入车辆在户外驾驶场景,以及从Linemod数据集生成新的对象视图。我们定性地表明,我们的网络能够在训练集之外推广到新的场景几何形状,对象形状和分割。此外,我们定量地表明,GIS框架可以用来合成大量的训练数据,证明有利于训练实例分割模型。

英文摘要:

The task of generating natural images from 3D scenes has been a long standing goal in computer graphics. On the other hand, recent developments in deep neural networks allow for trainable models that can produce natural-looking images with little or no knowledge about the scene structure. While the generated images often consist of realistic looking local patterns, the overall structure of the generated images is often inconsistent. In this work we propose a trainable, geometry-aware image generation method that leverages various types of scene information, including geometry and segmentation, to create realistic looking natural images that match the desired scene structure. Our geometrically-consistent image synthesis method is a deep neural network, called Geometry to Image Synthesis (GIS) framework, which retains the advantages of a trainable method, e.g., differentiability and adaptiveness, but, at the same time, makes a step towards the generalizability, control and quality output of modern graphics rendering engines. We utilize the GIS framework to insert vehicles in outdoor driving scenes, as well as to generate novel views of objects from the Linemod dataset. We qualitatively show that our network is able to generalize beyond the training set to novel scene geometries, object shapes and segmentations. Furthermore, we quantitatively show that the GIS framework can be used to synthesize large amounts of training data which proves beneficial for training instance segmentation models.

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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