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This paper presents a sparse representation-based classification approach with a novel dictionary construction procedure. By using the constructed dictionary sophisticated prior knowledge about the spatial nature of the image can be…

计算机视觉与模式识别 · 计算机科学 2017-08-22 Ribana Roscher , Björn Waske

Hyperspectral unmixing, the process of estimating a common set of spectral bases and their corresponding composite percentages at each pixel, is an important task for hyperspectral analysis, visualization and understanding. From an…

计算机视觉与模式识别 · 计算机科学 2014-11-18 Feiyun Zhu , Ying Wang , Bin Fan , Gaofeng Meng , Shiming Xiang , Chunhong Pan

The problem of foreground material signature extraction in an intimate (nonlinear) mixing setting is considered. It is possible for a foreground material signature to appear in combination with multiple background material signatures. We…

信号处理 · 电气工程与系统科学 2023-03-22 Jarrod Hollis , Raviv Raich , Jinsub Kim , Barak Fishbain , Shai Kendler

Hyperspectral unmixing aims at identifying a set of elementary spectra and the corresponding mixture coefficients for each pixel of an image. As the elementary spectra correspond to the reflectance spectra of real materials, they are often…

计算机视觉与模式识别 · 计算机科学 2020-02-17 Adrien Lagrange , Mathieu Fauvel , Stéphane May , Nicolas Dobigeon

We propose to bridge the gap between semi-supervised and unsupervised image recognition with a flexible method that performs well for both generalized category discovery (GCD) and image clustering. Despite the overlap in motivation between…

计算机视觉与模式识别 · 计算机科学 2025-03-19 Gihan Jayatilaka , Abhinav Shrivastava , Matthew Gwilliam

Open-set few-shot hyperspectral image (HSI) classification aims to classify image pixels by using few labeled pixels per class, where the pixels to be classified may be not all from the classes that have been seen. To address the open-set…

计算机视觉与模式识别 · 计算机科学 2025-08-26 Chun Liu , Chen Zhang , Zhuo Li , Zheng Li , Wei Yang

A common class of problems in remote sensing is scene classification, a fundamentally important task for natural hazards identification, geographic image retrieval, and environment monitoring. Recent developments in this field rely…

计算机视觉与模式识别 · 计算机科学 2022-01-21 Suhas Kotha , Anirudh Koul , Siddha Ganju , Meher Kasam

The Hyperspectral image (HSI) classification is a standard remote sensing task, in which each image pixel is given a label indicating the physical land-cover on the earth's surface. The achievements of image semantic segmentation and deep…

计算机视觉与模式识别 · 计算机科学 2020-02-10 Divinah Nyasaka , Jing Wang , Haron Tinega

Hyperspectral images provide much more information than conventional imaging techniques, allowing a precise identification of the materials in the observed scene, but because of the limited spatial resolution, the observations are usually…

图像与视频处理 · 电气工程与系统科学 2019-03-29 Lucas Drumetz , Travis R. Meyer , Jocelyn Chanussot , Andrea L. Bertozzi , Christian Jutten

Recently, the hyperspectral sensors have improved our ability to monitor the earth surface with high spectral resolution. However, the high dimensionality of spectral data brings challenges for the image processing. Consequently, the…

计算机视觉与模式识别 · 计算机科学 2022-10-28 Asma Elmaizi , Hasna Nhaila , Elkebir Sarhrouni , Ahmed Hammouch , Chafik Nacir

Label information plays an important role in supervised hyperspectral image classification problem. However, current classification methods all ignore an important and inevitable problem---labels may be corrupted and collecting clean labels…

计算机视觉与模式识别 · 计算机科学 2019-04-03 Junjun Jiang , Jiayi Ma , Zheng Wang , Chen Chen , Xianming Liu

Cell detection is an essential task in cell image analysis. Recent deep learning-based detection methods have achieved very promising results. In general, these methods require exhaustively annotating the cells in an entire image. If some…

计算机视觉与模式识别 · 计算机科学 2021-07-22 Kazuma Fujii , Daiki Suehiro , Kazuya Nishimura , Ryoma Bise

In recent years, significant progress has been made in the field of learning from positive and unlabeled examples (PU learning), particularly in the context of advancing image and text classification tasks. However, applying PU learning to…

图像与视频处理 · 电气工程与系统科学 2024-05-08 Yan Zhang , Chun Li , Zhaoxia Liu , Ming Li

Recently, self-supervised learning has attracted attention due to its remarkable ability to acquire meaningful representations for classification tasks without using semantic labels. This paper introduces a self-supervised learning…

计算机视觉与模式识别 · 计算机科学 2022-02-09 Hyungtae Lee , Heesung Kwon

Hyperspectral image classification, a task that assigns pre-defined classes to each pixel in a hyperspectral image of remote sensing scenes, often faces challenges due to the neglect of correlations between spectrally similar pixels. This…

计算机视觉与模式识别 · 计算机科学 2025-04-04 Peifu Liu , Tingfa Xu , Jie Wang , Huan Chen , Huiyan Bai , Jianan Li

Most image-text retrieval work adopts binary labels indicating whether a pair of image and text matches or not. Such a binary indicator covers only a limited subset of image-text semantic relations, which is insufficient to represent…

计算机视觉与模式识别 · 计算机科学 2022-10-21 Zheng Li , Caili Guo , Zerun Feng , Jenq-Neng Hwang , Ying Jin , Yufeng Zhang

Hyperspectral imaging provides detailed information about the scanned objects, as it captures their spectral characteristics within a large number of wavelength bands. Classification of such data has become an active research topic due to…

计算机视觉与模式识别 · 计算机科学 2019-07-30 Jakub Nalepa , Lukasz Tulczyjew , Michal Myller , Michal Kawulok

Learning binary classifiers from positive and unlabeled data (PUL) is vital in many real-world applications, especially when verifying negative examples is difficult. Despite the impressive empirical performance of recent PUL methods,…

机器学习 · 计算机科学 2024-10-14 Xinrui Wang , Wenhai Wan , Chuanxin Geng , Shaoyuan LI , Songcan Chen

Continual learning aims to learn new tasks incrementally using less computation and memory resources instead of retraining the model from scratch whenever new task arrives. However, existing approaches are designed in supervised fashion…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Jiangpeng He , Fengqing Zhu

Urban material recognition in remote sensing imagery is a highly relevant, yet extremely challenging problem due to the difficulty of obtaining human annotations, especially on low resolution satellite images. To this end, we propose an…

计算机视觉与模式识别 · 计算机科学 2021-05-18 Arthita Ghosh , Max Ehrlich , Larry Davis , Rama Chellappa