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Camera traps are a method for monitoring wildlife and they collect a large number of pictures. The number of images collected of each species usually follows a long-tail distribution, i.e., a few classes have a large number of instances,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-15 Fagner Cunha , Eulanda M. dos Santos , Juan G. Colonna

Deep learning (DL) algorithms are the state of the art in automated classification of wildlife camera trap images. The challenge is that the ecologist cannot know in advance how many images per species they need to collect for model…

Computer Vision and Pattern Recognition · Computer Science 2020-10-19 Saleh Shahinfar , Paul Meek , Greg Falzon

Several unsupervised and self-supervised approaches have been developed in recent years to learn visual features from large-scale unlabeled datasets. Their main drawback however is that these methods are hardly able to recognize visual…

Computer Vision and Pattern Recognition · Computer Science 2022-06-08 Alessandra Alfani , Federico Becattini , Lorenzo Seidenari , Alberto Del Bimbo

Visual animal biometrics is rapidly gaining popularity as it enables a non-invasive and cost-effective approach for wildlife monitoring applications. Widespread usage of camera traps has led to large volumes of collected images, making…

Computer Vision and Pattern Recognition · Computer Science 2020-05-07 Gullal Singh Cheema , Saket Anand

Recent works have shown that combining object detection and tracking tasks, in the case of video data, results in higher performance for both tasks, but they require a high frame-rate as a strict requirement for performance. This is…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Bharti Munjal , Abdul Rafey Aftab , Sikandar Amin , Meltem D. Brandlmaier , Federico Tombari , Fabio Galasso

Accurate pest population monitoring and tracking their dynamic changes are crucial for precision agriculture decision-making. A common limitation in existing vision-based automatic pest counting research is that models are typically…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Xumin Gao , Mark Stevens , Grzegorz Cielniak

Computer vision applications are increasingly popular for wildlife monitoring tasks. While some studies focus on the monitoring of a single species, such as a particular endangered species, others monitor larger functional groups, such as…

Quantitative Methods · Quantitative Biology 2024-07-02 Jess Tam , Justin Kay

Camera trapping is increasingly used to monitor wildlife, but this technology typically requires extensive data annotation. Recently, deep learning has significantly advanced automatic wildlife recognition. However, current methods are…

Computer Vision and Pattern Recognition · Computer Science 2021-10-20 Zhongqi Miao , Ziwei Liu , Kaitlyn M. Gaynor , Meredith S. Palmer , Stella X. Yu , Wayne M. Getz

Photo-trapping cameras are widely employed for wildlife monitoring. Those cameras take photographs when motion is detected to capture images where animals appear. A significant portion of these images are empty - no wildlife appears in the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-25 David de la Rosa , Antonio J Rivera , María J del Jesus , Francisco Charte

Preserving the number and diversity of insects is one of our society's most important goals in the area of environmental sustainability. A prerequisite for this is a systematic and up-scaled monitoring in order to detect correlations and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-29 Danja Brandt , Martin Tschaikner , Teodor Chiaburu , Henning Schmidt , Ilona Schrimpf , Alexandra Stadel , Ingeborg E. Beckers , Frank Haußer

Camera traps are crucial in biodiversity motivated studies, however dealing with large number of images while annotating these data sets is a tedious and time consuming task. To speed up this process, Machine Learning approaches are a…

Computer Vision and Pattern Recognition · Computer Science 2020-08-19 Miroslav Valan , Lukáš Picek

This paper describes the search for an alternative approach to the automatic categorization of camera trap images. First, we benchmark state-of-the-art classifiers using a single model for all images. Next, we evaluate methods combining…

Computer Vision and Pattern Recognition · Computer Science 2024-10-17 Jiří Vyskočil , Lukas Picek

Convolutional Neural Networks (CNNs) serve as the workhorse of deep learning, finding applications in various fields that rely on images. Given sufficient data, they exhibit the capacity to learn a wide range of concepts across diverse…

Computer Vision and Pattern Recognition · Computer Science 2025-02-27 Saorj Kumar , Prince Asiamah , Oluwatoyin Jolaoso , Ugochukwu Esiowu

Automated animal censuses with aerial imagery are a vital ingredient towards wildlife conservation. Recent models are generally based on deep learning and thus require vast amounts of training data. Due to their scarcity and minuscule size,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-18 Xiaochen Zheng , Benjamin Kellenberger , Rui Gong , Irena Hajnsek , Devis Tuia

This paper describes a new type of auto-associative image classifier that uses a shallow architecture with a very quick learning phase. The image is parsed into smaller areas and each area is saved directly for a region, along with the…

Computer Vision and Pattern Recognition · Computer Science 2022-12-21 Kieran Greer

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…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Gihan Jayatilaka , Abhinav Shrivastava , Matthew Gwilliam

Modern inexpensive imaging sensors suffer from inherent hardware constraints which often result in captured images of poor quality. Among the most common ways to deal with such limitations is to rely on burst photography, which nowadays…

Computer Vision and Pattern Recognition · Computer Science 2019-04-01 Filippos Kokkinos , Stamatios Lefkimmiatis

In this study, we consider the problem of detecting cracks from the image of a concrete surface for automated inspection of infrastructure, such as bridges. Its overall accuracy is determined by how accurately thin cracks with sub-pixel…

Computer Vision and Pattern Recognition · Computer Science 2021-01-12 Liang Xu , Taro Hatsutani , Xing Liu , Engkarat Techapanurak , Han Zou , Takayuki Okatani

Photosequencing aims to transform a motion blurred image to a sequence of sharp images. This problem is challenging due to the inherent ambiguities in temporal ordering as well as the recovery of lost spatial textures due to blur. Adopting…

Computer Vision and Pattern Recognition · Computer Science 2019-12-13 Vijay Rengarajan , Shuo Zhao , Ruiwen Zhen , John Glotzbach , Hamid Sheikh , Aswin C. Sankaranarayanan

Active camera relocalization (ACR) is a new problem in computer vision that significantly reduces the false alarm caused by image distortions due to camera pose misalignment in fine-grained change detection (FGCD). Despite the fruitful…

Computer Vision and Pattern Recognition · Computer Science 2022-04-15 Nan Li , Wei Feng , Qian Zhang