360{\deg} cameras can capture complete environments in a single shot, which
makes 360{\deg} imagery alluring in many computer vision tasks. However,
monocular depth estimation remains a challenge for 360{\deg} data, particularly
for high resolutions like 2K (2048x1024) and beyond that are important for
novel-view synthesis and virtual reality applications. Current CNN-based
methods do not support such high resolutions due to limited GPU memory. In this
work, we propose a flexible framework for monocular depth estimation from
high-resolution 360{\deg} images using tangent images. We project the 360{\deg}
input image onto a set of tangent planes that produce perspective views, which
are suitable for the latest, most accurate state-of-the-art perspective
monocular depth estimators. To achieve globally consistent disparity estimates,
we recombine the individual depth estimates using deformable multi-scale
alignment followed by gradient-domain blending. The result is a dense,
high-resolution 360{\deg} depth map with a high level of detail, also for
outdoor scenes which are not supported by existing methods. Our source code and
data are available at this https URL

提出一种基于切线图像的高分辨率 360 度图像单目深度估计方法，通过将输入的 360 度图像投影到切线平面上得到透视视图，以此来支持最新的和最准确的单目深度估计器，采用可变形多尺度对齐和梯度域混合来重新组合单个深度估计，产生具有高分辨率和高细节的稠密 360 度景深图。