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Related papers: Endmember Extraction from Hyperspectral Images Usi…

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Multi-modal large language models (MLLMs) have achieved remarkable success in image- and region-level remote sensing (RS) image understanding tasks, such as image captioning, visual question answering, and visual grounding. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Ruizhe Ou , Yuan Hu , Fan Zhang , Jiaxin Chen , Yu Liu

Data augmentation is an effective way to improve the performance of deep networks. Unfortunately, current methods are mostly developed for high-level vision tasks (e.g., classification) and few are studied for low-level vision tasks (e.g.,…

Image and Video Processing · Electrical Eng. & Systems 2020-04-24 Jaejun Yoo , Namhyuk Ahn , Kyung-Ah Sohn

We show that simple patch-based models, such as epitomes, can have superior performance to the current state of the art in semantic segmentation and label super-resolution, which uses deep convolutional neural networks. We derive a new…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Nikolay Malkin , Anthony Ortiz , Caleb Robinson , Nebojsa Jojic

Hyperspectral imaging has attracted significant attention to identify spectral signatures for image classification and automated pattern recognition in computer vision. State-of-the-art implementations of snapshot hyperspectral imaging rely…

Computer Vision and Pattern Recognition · Computer Science 2022-04-06 Maksim Makarenko , Arturo Burguete-Lopez , Qizhou Wang , Fedor Getman , Silvio Giancola , Bernard Ghanem , Andrea Fratalocchi

In this work we investigate a novel approach to handle the challenges of face recognition, which includes rotation, scale, occlusion, illumination etc. Here, we have used thermal face images as those are capable to minimize the affect of…

Computer Vision and Pattern Recognition · Computer Science 2010-07-06 Mrinal Kanti Bhowmik , Debotosh Bhattacharjee , Mita Nasipuri , Dipak Kumar Basu , Mahantapas Kundu

Diffusion Probabilistic Models (DPMs) suffer from inefficient inference due to their slow sampling and high memory consumption, which limits their applicability to various medical imaging applications. In this work, we propose a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Fahim Ahmed Zaman , Mathews Jacob , Amanda Chang , Kan Liu , Milan Sonka , Xiaodong Wu

Subspace clustering is a powerful unsupervised approach for hyperspectral image (HSI) analysis, but its high computational and memory costs limit scalability. Superpixel segmentation can improve efficiency by reducing the number of data…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Xianlu Li , Nicolas Nadisic , Shaoguang Huang , Aleksandra Pizurica

Diffusion models have recently received increasing research attention for their remarkable transfer abilities in semantic segmentation tasks. However, generating fine-grained segmentation masks with diffusion models often requires…

Computer Vision and Pattern Recognition · Computer Science 2024-01-23 Koichi Namekata , Amirmojtaba Sabour , Sanja Fidler , Seung Wook Kim

Neural Radiance Field (NeRF)-based segmentation methods focus on object semantics and rely solely on RGB data, lacking intrinsic material properties. This limitation restricts accurate material perception, which is crucial for robotics,…

Image and Video Processing · Electrical Eng. & Systems 2025-08-07 Fabian Perez , Sara Rojas , Carlos Hinojosa , Hoover Rueda-Chacón , Bernard Ghanem

Image transmission through multimode optical fibers has been an area of immense interests driven by the demand for miniature endoscopes in biomedicine and higher speed and capacity in telecommunications. Conventionally, a complex-valued…

Optics · Physics 2020-07-15 Tianrui Zhao , Sebastien Ourselin , Tom Vercauteren , Wenfeng Xia

Achieving accurate material segmentation for 3-channel RGB images is challenging due to the considerable variation in a material's appearance. Hyperspectral images, which are sets of spectral measurements sampled at multiple wavelengths,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Yuwen Heng , Yihong Wu , Jiawen Chen , Srinandan Dasmahapatra , Hansung Kim

Optimal extraction is a key step in processing the raw images of spectra as registered by two-dimensional detector arrays to a one-dimensional format. Previously reported algorithms reconstruct models for a mean one-dimensional spatial…

Instrumentation and Methods for Astrophysics · Physics 2015-06-18 M. Zechmeister , G. Anglada-Escudé , A. Reiners

Unsupervised estimation of the dimensionality of hyperspectral microspectroscopy datasets containing pure and mixed spectral features, and extraction of their representative endmember spectra, remains a challenge in biochemical data mining.…

Large Language Models (LLM) have revolutionized Natural Language Processing (NLP), improving state-of-the-art and exhibiting emergent capabilities across various tasks. However, their application in extracting information from visually rich…

Computation and Language · Computer Science 2024-06-25 Vincent Perot , Kai Kang , Florian Luisier , Guolong Su , Xiaoyu Sun , Ramya Sree Boppana , Zilong Wang , Zifeng Wang , Jiaqi Mu , Hao Zhang , Chen-Yu Lee , Nan Hua

Topological alignments and snakes are used in image processing, particularly in locating object boundaries. Both of them have their own advantages and limitations. To improve the overall image boundary detection system, we focused on…

Computer Vision and Pattern Recognition · Computer Science 2011-06-03 Ashraf A. Aly , Safaai Bin Deris , Nazar Zaki

To segment 4K or 6K ultra high-resolution images needs extra computation consideration in image segmentation. Common strategies, such as down-sampling, patch cropping, and cascade model, cannot address well the balance issue between…

Computer Vision and Pattern Recognition · Computer Science 2025-02-24 Tiancheng Shen , Yuechen Zhang , Lu Qi , Jason Kuen , Xingyu Xie , Jianlong Wu , Zhe Lin , Jiaya Jia

This work proposes a variational inference (VI) framework for hyperspectral unmixing in the presence of endmember variability (HU-EV). An EV-accounted noisy linear mixture model (LMM) is considered, and the presence of outliers is also…

Machine Learning · Computer Science 2024-07-23 Yuening Li , Xiao Fu , Junbin Liu , Wing-Kin Ma

Cameras digitize real-world scenes as pixel intensity values with a limited value range given by the available bits per pixel (bpp). High Dynamic Range (HDR) cameras capture those luminance values in higher resolution through an increase in…

Computer Vision and Pattern Recognition · Computer Science 2023-06-22 Axel Gödrich , Daniel König , Gabriel Eilertsen , Michael Teutsch

Spectral imaging enables spatially-resolved identification of materials in remote sensing, biomedicine, and astronomy. However, acquisition times require balancing spectral and spatial resolution with signal-to-noise. Hyperspectral imaging…

Computer Vision and Pattern Recognition · Computer Science 2020-03-17 Nguyen Tran , Rupali Mankar , David Mayerich , Zhu Han

We present an efficient subpixel refinement method usinga learning-based approach called Linear Predictors. Two key ideas are shown in this paper. Firstly, we present a novel technique, called Symbolic Linear Predictors, which makes the…

Computer Vision and Pattern Recognition · Computer Science 2018-05-01 Vincent Lui , Jonathon Geeves , Winston Yii , Tom Drummond