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The annotation of polarimetric synthetic aperture radar (PolSAR) images is a labor-intensive and time-consuming process. Therefore, classifying PolSAR images with limited labels is a challenging task in remote sensing domain. In recent…

Computer Vision and Pattern Recognition · Computer Science 2024-08-09 Yuchen Wang , Ziyi Guo , Haixia Bi , Danfeng Hong , Chen Xu

We have developed a nonlocal algorithm for estimating polarimetric synthetic aperture radar (PolSAR) covariance matrices on single-look complex (SLC) format resolution. The algorithm is inspired by recent work with guided nonlocal means…

Image and Video Processing · Electrical Eng. & Systems 2022-02-16 Jørgen A. Agersborg , Stian Normann Anfinsen , Jane Uhd Jepsen

This paper addresses the problem of geometric scene parsing, i.e. simultaneously labeling geometric surfaces (e.g. sky, ground and vertical plane) and determining the interaction relations (e.g. layering, supporting, siding and affinity)…

Computer Vision and Pattern Recognition · Computer Science 2016-04-11 Zhanglin Peng , Ruimao Zhang , Xiaodan Liang , Xiaobai Liu , Liang Lin

Semantic image segmentation is an important computer vision task that is difficult because it consists of both recognition and segmentation. The task is often cast as a structured output problem on an exponentially large output-space, which…

Computer Vision and Pattern Recognition · Computer Science 2017-09-07 Payman Yadollahpour

Random Ferns -- as a less known example of Ensemble Learning -- have been successfully applied in many Computer Vision applications ranging from keypoint matching to object detection. This paper extends the Random Fern framework to the…

Computer Vision and Pattern Recognition · Computer Science 2022-02-09 Pengchao Wei , Ronny Hänsch

In this letter, we propose a novel technique for obtaining scattering components from Polarimetric Synthetic Aperture Radar (PolSAR) data using the geodesic distance on the unit sphere. This geodesic distance is obtained between an…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Debanshu Ratha , Avik Bhattacharya , Alejandro C. Frery

Spectro-polarimetric imaging provides multidimensional optical information acquisition capabilities, offering significant potential for diverse applications. Current spectro-polarimetric imaging systems typically suffer from large physical…

Image and Video Processing · Electrical Eng. & Systems 2025-09-18 Jingyue Ma , Zhenming Yu , Zhengyang Li , Liang Lin , Liming Cheng , Jiayu Di , Tongshuo Zhang , Ning Zhan , Kun Xu

Deep learning is an effective end-to-end method for Polarimetric Synthetic Aperture Radar(PolSAR) image classification, but it lacks the guidance of related mathematical principle and is essentially a black-box model. In addition, existing…

Computer Vision and Pattern Recognition · Computer Science 2025-02-24 Junfei Shi , Mengmeng Nie , Weisi Lin , Haiyan Jin , Junhuai Li , Rui Wang

Deep learning has been extensively utilized for PolSAR image classification. However, most existing methods transform the polarimetric covariance matrix into a real- or complex-valued vector to comply with standard deep learning frameworks…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Junfei Shi , Yuke Li , Mengmeng Nie , Fang Liu , Haiyan Jin , Junhuai Li , Weisi Lin

As a representation learning method, nearest regularized subspace(NRS) algorithm is an effective tool to obtain both accuracy and speed for PolSAR image classification. However, existing NRS methods use the polarimetric feature vector but…

Image and Video Processing · Electrical Eng. & Systems 2023-02-08 Junfei Shi , Haiyan Jin

In this work we explore the performance of DCNNs on semantic segmentation using spaceborne polarimetric synthetic aperture radar (PolSAR) datasets. The semantic segmentation task using PolSAR data can be categorized as weakly supervised…

Image and Video Processing · Electrical Eng. & Systems 2024-11-20 Sheng Sun , Armando Marino , Wenze Shui , Zhongwen Hu

We present an approach for polarimetric Synthetic Aperture Radar (SAR) image region boundary detection based on the use of B-Spline active contours and a new model for polarimetric SAR data: the GHP distribution. In order to detect the…

Computer Vision and Pattern Recognition · Computer Science 2012-07-18 Alejandro C. Frery , Julio Jacobo-Berlles , Juliana Gambini , Marta Mejail

In this paper we present a differential approach to photo-polarimetric shape estimation. We propose several alternative differential constraints based on polarisation and photometric shading information and show how to express them in a…

Computer Vision and Pattern Recognition · Computer Science 2017-08-28 Silvia Tozza , William A. P. Smith , Dizhong Zhu , Ravi Ramamoorthi , Edwin R. Hancock

This paper presents a structured dictionary-based model for hyperspectral data that incorporates both spectral and contextual characteristics of a spectral sample, with the goal of hyperspectral image classification. The idea is to…

Computer Vision and Pattern Recognition · Computer Science 2013-08-07 Ali Soltani-Farani , Hamid R. Rabiee , Seyyed Abbas Hosseini

A Polarimetric Synthetic Aperture Radar (PolSAR) sensor is able to collect images in different polarization states, making it a rich source of information for target characterization. PolSAR images are inherently affected by speckle.…

Image and Video Processing · Electrical Eng. & Systems 2022-02-16 Adugna G. Mullissa , Claudio Persello , Johannes Reiche

In this paper, we investigated the semantic segmentation of Polarimetric Synthetic Aperture Radar (PolSAR) using Complex-Valued Neural Network (CVNN). Although the coherency matrix is more widely used as the input of CVNN, the Pauli vector…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 José Agustin Barrachina , Chengfang Ren , Christèle Morisseau , Gilles Vieillard , Jean-Philippe Ovarlez

We introduce a novel deep learning-based framework to interpret 3D urban scenes represented as textured meshes. Based on the observation that object boundaries typically align with the boundaries of planar regions, our framework achieves…

Computer Vision and Pattern Recognition · Computer Science 2022-12-27 Weixiao Gao , Liangliang Nan , Bas Boom , Hugo Ledoux

Automatic colourisation of grey-scale images is an ill-posed multi-modal problem. Where full-reference images exist, objective performance measures rely on pixel-difference techniques such as MSE and PSNR. These measures penalise any…

Computer Vision and Pattern Recognition · Computer Science 2020-11-04 Seán Mullery , Paul F. Whelan

Efficient and accurate polarimetric synthetic aperture radar (PolSAR) image classification with a limited number of prior labels is always full of challenges. For general supervised deep learning classification algorithms, the…

Computer Vision and Pattern Recognition · Computer Science 2020-01-22 Dongling Xiao , Chang Liu , Qi Wang , Chao Wang , Xin Zhang

Understanding the context of complex and cluttered scenes is a challenging problem for semantic segmentation. However, it is difficult to model the context without prior and additional supervision because the scene's factors, such as the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Hiroaki Aizawa , Yukihiro Domae , Kunihito Kato