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We address the problem of decomposing an image into albedo and shading. We propose the Fast Fourier Intrinsic Network, FFI-Net in short, that operates in the spectral domain, splitting the input into several spectral bands. Weights in…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Yanlin Qian , Miaojing Shi , Joni-Kristian Kämäräinen , Jiri Matas

When information is spatially repeated in self-similar fractal beam patterns, only a portion of the diffracted beam is needed to reconstruct the kernel data. What is unique to a fractal-encoding scheme is that the image demultiplexing…

Optics · Physics 2025-07-01 Xiaojing Weng , Luat T. Vuong

We introduce FGSSNet, a novel multi-headed feature-guided semantic segmentation (FGSS) architecture designed to improve the generalization ability of wall segmentation on floorplans. FGSSNet features a U-Net segmentation backbone with a…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Hugo Norrby , Gabriel Färm , Kevin Hernandez-Diaz , Fernando Alonso-Fernandez

Fourier ptychography microscopy(FP) is a recently developed computational imaging approach for microscopic super-resolution imaging. By turning on each light-emitting-diode (LED) located on different position on the LED array sequentially…

Optics · Physics 2022-02-22 Delong Yang , Shaohui Zhang , Chuanjian Zheng , Guocheng Zhou , Lei Cao , Yao Hu , Qun Hao

State-of-the-art object detectors usually learn multi-scale representations to get better results by employing feature pyramids. However, the current designs for feature pyramids are still inefficient to integrate the semantic information…

Computer Vision and Pattern Recognition · Computer Science 2018-08-27 Tao Kong , Fuchun Sun , Wenbing Huang , Huaping Liu

Learning multi-scale representations is the common strategy to tackle object scale variation in dense prediction tasks. Although existing feature pyramid networks have greatly advanced visual recognition, inherent design defects inhibit…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Meng'en Qin , Yu Song , Quanling Zhao , Xiaodong Yang , Yingtao Che , Xiaohui Yang

Neural operators aim to learn mappings between infinite-dimensional function spaces, but their performance often degrades on complex or irregular geometries due to the lack of geometry-aware representations. We propose the Finite Element…

Numerical Analysis · Mathematics 2026-02-03 Shiyuan Li , Hossein Salahshoor

Neural fields have emerged as a new paradigm for representing signals, thanks to their ability to do it compactly while being easy to optimize. In most applications, however, neural fields are treated like black boxes, which precludes many…

Computer Vision and Pattern Recognition · Computer Science 2023-02-10 Guandao Yang , Sagie Benaim , Varun Jampani , Kyle Genova , Jonathan T. Barron , Thomas Funkhouser , Bharath Hariharan , Serge Belongie

Learning per-point semantic features from the hierarchical feature pyramid is essential for point cloud semantic segmentation. However, most previous methods suffered from ambiguous region features or failed to refine per-point features…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Peng Xiang , Xin Wen , Yu-Shen Liu , Hui Zhang , Yi Fang , Zhizhong Han

Semantic Segmentation plays a pivotal role in many applications related to medical image and video analysis. However, designing a neural network architecture for medical image and surgical video segmentation is challenging due to the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Negin Ghamsarian , Sebastian Wolf , Martin Zinkernagel , Klaus Schoeffmann , Raphael Sznitman

With the increasing availability of high-resolution remote sensing and aerial imagery, oriented object detection has become a key capability for geographic information updating, maritime surveillance, and disaster response. However, it…

Computer Vision and Pattern Recognition · Computer Science 2026-02-12 Jialin Ma

Convolutional Neural Networks (CNNs) can provide accurate object classification. They can be extended to perform object detection by iterating over dense or selected proposed object regions. However, the runtime of such detectors scales as…

Computer Vision and Pattern Recognition · Computer Science 2014-04-08 Forrest Iandola , Matt Moskewicz , Sergey Karayev , Ross Girshick , Trevor Darrell , Kurt Keutzer

Feature pyramid network (FPN) has been an effective framework to extract multi-scale features in object detection. However, current FPN-based methods mostly suffer from the intrinsic flaw of channel reduction, which brings about the loss of…

Computer Vision and Pattern Recognition · Computer Science 2021-03-22 Yihao Luo , Xiang Cao , Juntao Zhang , Xiang Cao , Jingjuan Guo , Haibo Shen , Tianjiang Wang , Qi Feng

Estimating accurate depth from a single image is challenging because it is an ill-posed problem as infinitely many 3D scenes can be projected to the same 2D scene. However, recent works based on deep convolutional neural networks show great…

Computer Vision and Pattern Recognition · Computer Science 2021-09-24 Jin Han Lee , Myung-Kyu Han , Dong Wook Ko , Il Hong Suh

Single-image super-resolution (SISR) has seen significant advancements through the integration of deep learning. However, the substantial computational and memory requirements of existing methods often limit their practical application.…

Computer Vision and Pattern Recognition · Computer Science 2023-12-22 Xin Xu , Jinman Park , Paul Fieguth

Semantic segmentation for robotic systems can enable a wide range of applications, from self-driving cars and augmented reality systems to domestic robots. We argue that a spherical representation is a natural one for egocentric…

Robotics · Computer Science 2022-10-26 Lukas Bernreiter , Lionel Ott , Roland Siegwart , Cesar Cadena

Automatic building extraction from optical imagery remains a challenge due to, for example, the complexity of building shapes. Semantic segmentation is an efficient approach for this task. The latest development in deep convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2019-11-11 Yilei Shi , Qingyu Li , Xiao Xiang Zhu

Fully Convolutional Neural Networks (FCNNs) with contracting and expanding paths have shown prominence for the majority of medical image segmentation applications since the past decade. In FCNNs, the encoder plays an integral role by…

Image and Video Processing · Electrical Eng. & Systems 2021-10-12 Ali Hatamizadeh , Yucheng Tang , Vishwesh Nath , Dong Yang , Andriy Myronenko , Bennett Landman , Holger Roth , Daguang Xu

This paper proposes an innovative object detector by leveraging deep features learned in high-level layers. Compared with features produced in earlier layers, the deep features are better at expressing semantic and contextual information.…

Computer Vision and Pattern Recognition · Computer Science 2019-12-11 Wenchi Ma , Yuanwei Wu , Feng Cen , Guanghui Wang

For Convolutional Neural Network-based object detection, there is a typical dilemma: the spatial information is well kept in the shallow layers which unfortunately do not have enough semantic information, while the deep layers have a high…

Computer Vision and Pattern Recognition · Computer Science 2020-05-08 Ziming Liu , Guangyu Gao , Lin Sun , Li Fang