In Fringe Projection Profilometry (FPP), achieving robust and accurate 3D
reconstruction with a limited number of fringe patterns remains a challenge in
structured light 3D imaging. Conventional methods require a set of fringe
images, but using only one or two patterns complicates phase recovery and
unwrapping. In this study, we introduce SFNet, a symmetric fusion network that
transforms two fringe images into an absolute phase. To enhance output
reliability, Our framework predicts refined phases by incorporating information
from fringe images of a different frequency than those used as input. This
allows us to achieve high accuracy with just two images. Comparative
experiments and ablation studies validate the effectiveness of our proposed
method. The dataset and code are publicly accessible on our project page
this https URL

通过使用 SFNet 模型，我们提出了一种基于两个 fringe 图像的相位恢复方法，实现了高精度的 3D 重建，解决了使用有限数量的 fringe 图案的挑战。

使用深度学习进行增强的条纹到相位框架

Enhanced fringe-to-phase framework using deep learning

We address the problem of semantic correspondence, that is, establishing a
dense flow field between images depicting different instances of the same
object or scene category. We propose to use images annotated with binary
foreground masks and subjected to synthetic geometric deformations to train a
convolutional neural network (CNN) for this task. Using these masks as part of
the supervisory signal provides an object-level prior for the semantic
correspondence task and offers a good compromise between semantic flow methods,
where the amount of training data is limited by the cost of manually selecting
point correspondences, and semantic alignment ones, where the regression of a
single global geometric transformation between images may be sensitive to
image-specific details such as background clutter. We propose a new CNN
architecture, dubbed SFNet, which implements this idea. It leverages a new and
differentiable version of the argmax function for end-to-end training, with a
loss that combines mask and flow consistency with smoothness terms.
Experimental results demonstrate the effectiveness of our approach, which
significantly outperforms the state of the art on standard benchmarks.

研究使用二进制前景掩码并经过合成几何变形的图像来训练卷积神经网络（CNN），以解决语义对应问题，提出了一种新的 CNN 体系结构（称为 SFNet），其实现了这一想法，并展示了在标准基准测试中明显优于现有技术的实验结果。

利用对象级先验学习语义对应关系

Learning Semantic Correspondence Exploiting an Object-level Prior

We address the problem of semantic correspondence, that is, establishing a
dense flow field between images depicting different instances of the same
object or scene category. We propose to use images annotated with binary
foreground masks and subjected to synthetic geometric deformations to train a
convolutional neural network (CNN) for this task. Using these masks as part of
the supervisory signal offers a good compromise between semantic flow methods,
where the amount of training data is limited by the cost of manually selecting
point correspondences, and semantic alignment ones, where the regression of a
single global geometric transformation between images may be sensitive to
image-specific details such as background clutter. We propose a new CNN
architecture, dubbed SFNet, which implements this idea. It leverages a new and
differentiable version of the argmax function for end-to-end training, with a
loss that combines mask and flow consistency with smoothness terms.
Experimental results demonstrate the effectiveness of our approach, which
significantly outperforms the state of the art on standard benchmarks.

通过使用二进制前景蒙版和几何变形训练卷积神经网络（CNN）实现语义对应的密集流场，提出了一种新的 CNN 框架 SFNet，并在各项基准测试中表现出比现有方案更好的泛化性能。