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Imaging the atmosphere using ground-based sky cameras is a popular approach to study various atmospheric phenomena. However, it usually focuses on the daytime. Nighttime sky/cloud images are darker and noisier, and thus harder to analyze.…

Computer Vision and Pattern Recognition · Computer Science 2017-05-31 Soumyabrata Dev , Florian M. Savoy , Yee Hui Lee , Stefan Winkler

In this paper we present a method for line segment detection in images, based on a semi-supervised framework. Leveraging the use of a consistency loss based on differently augmented and perturbed unlabeled images with a small amount of…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Johanna Engman , Karl Åström , Magnus Oskarsson

The increasing demand for autonomous machines in construction environments necessitates the development of robust object detection algorithms that can perform effectively across various weather and environmental conditions. This paper…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Maghsood Salimi , Mohammad Loni , Sara Afshar , Antonio Cicchetti , Marjan Sirjani

Self-supervised prediction is a powerful mechanism to learn representations that capture the underlying structure of the data. Despite recent progress, the self-supervised video prediction task is still challenging. One of the critical…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Hafez Farazi , Sven Behnke

We propose and analyze a constrained level-set method for semi-automatic image segmentation. Our level-set model with constraints on the level-set function enables us to specify which parts of the image lie inside respectively outside the…

Numerical Analysis · Mathematics 2014-12-11 Vladimír Klement , Tomáš Oberhuber , Daniel Ševčovič

We propose and analyze a constrained level-set method for semi-automatic image segmentation. Our level-set model with constraints on the level-set function enables us to specify which parts of the image lie inside respectively outside the…

Numerical Analysis · Mathematics 2015-01-07 Vladimír Klement , Tomáš Oberhuber , Daniel Ševčovič

Sparse decomposition has been widely used for different applications, such as source separation, image classification, image denoising and more. This paper presents a new algorithm for segmentation of an image into background and foreground…

Computer Vision and Pattern Recognition · Computer Science 2016-07-28 Shervin Minaee , Yao Wang

Background modeling techniques are used for moving object detection in video. Many algorithms exist in the field of object detection with different purposes. In this paper, we propose an improvement of moving object detection based on…

Computer Vision and Pattern Recognition · Computer Science 2014-10-24 Mikaël A. Mousse , Eugène C. Ezin , Cina Motamed

Deep learning has proved particularly useful for semantic segmentation, a fundamental image analysis task. However, the standard deep learning methods need many training images with ground-truth pixel-wise annotations, which are usually…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Denis Baručić , Jan Kybic

Unsupervised video segmentation plays an important role in a wide variety of applications from object identification to compression. However, to date, fast motion, motion blur and occlusions pose significant challenges. To address these…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Yuan-Ting Hu , Jia-Bin Huang , Alexander G. Schwing

This paper introduces a fast and efficient segmentation technique for 2D images and 3D point clouds of building facades. Facades of buildings are highly structured and consequently most methods that have been proposed for this problem aim…

Computer Vision and Pattern Recognition · Computer Science 2016-06-22 Raghudeep Gadde , Varun Jampani , Renaud Marlet , Peter V. Gehler

Semantic segmentation is a key computer vision task that has been actively researched for decades. In recent years, supervised methods have reached unprecedented accuracy, however they require many pixel-level annotations for every new…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Nir Zabari , Yedid Hoshen

Mapping standing dead trees is critical for assessing forest health, monitoring biodiversity, and mitigating wildfire risks, for which aerial imagery has proven useful. However, dense canopy structures, spectral overlaps between living and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-06 Anis Ur Rahman , Einari Heinaro , Mete Ahishali , Samuli Junttila

Image semantic segmentation is parsing image into several partitions in such a way that each region of which involves a semantic concept. In a weakly supervised manner, since only image-level labels are available, discriminating objects…

Computer Vision and Pattern Recognition · Computer Science 2019-06-10 Mohammad Kamalzare , Reza Kahani , Alireza Talebpour , Ahmad Mahmoudi-Aznaveh

Image segmentation as a clustering problem is to identify pixel groups on an image without any preliminary labels available. It remains a challenge in machine vision because of the variations in size and shape of image segments.…

Computer Vision and Pattern Recognition · Computer Science 2020-07-07 Xin Zhong , Frank Y. Shih , Xiwang Guo

We propose a novel unsupervised image segmentation algorithm, which aims to segment an image into several coherent parts. It requires no user input, no supervised learning phase and assumes an unknown number of segments. It achieves this by…

Computer Vision and Pattern Recognition · Computer Science 2016-03-09 Aleksandar Dimitriev , Matej Kristan

Eye image segmentation is a critical step in eye tracking that has great influence over the final gaze estimate. Segmentation models trained using supervised machine learning can excel at this task, their effectiveness is determined by the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Viet Dung Nguyen , Reynold Bailey , Gabriel J. Diaz , Chengyi Ma , Alexander Fix , Alexander Ororbia

Citrus segmentation is a key step of automatic citrus picking. While most current image segmentation approaches achieve good segmentation results by pixel-wise segmentation, these supervised learning-based methods require a large amount of…

Computer Vision and Pattern Recognition · Computer Science 2021-05-05 Heqing Huang , Tongbin Huang , Zhen Li , Zhiwei Wei , Shilei Lv

A common approach for moving objects segmentation in a scene is to perform a background subtraction. Several methods have been proposed in this domain. However, they lack the ability of handling various difficult scenarios such as…

Computer Vision and Pattern Recognition · Computer Science 2018-08-06 Long Ang Lim , Hacer Yalim Keles

Over-segmentation of an image into superpixels has become a useful tool for solving various problems in image processing and computer vision. Reflection symmetry is quite prevalent in both natural and man-made objects and is an essential…

Computer Vision and Pattern Recognition · Computer Science 2018-08-13 Rajendra Nagar , Shanmuganathan Raman