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Non intrusive monitoring of animals in the wild is possible using camera trapping framework, which uses cameras triggered by sensors to take a burst of images of animals in their habitat. However camera trapping framework produces a high…

Computer Vision and Pattern Recognition · Computer Science 2016-03-23 Alexander Gomez , Augusto Salazar , Francisco Vargas

Generative artificial intelligence has transformed the generation of synthetic data, providing innovative solutions to challenges like data scarcity and privacy, which are particularly critical in fields such as medicine. However, the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Eugenio Lomurno , Matteo Matteucci

The task of re-identifying groups of people underdifferent camera views is an important yet less-studied problem.Group re-identification (Re-ID) is a very challenging task sinceit is not only adversely affected by common issues in…

Computer Vision and Pattern Recognition · Computer Science 2019-05-28 Weiyao Lin , Yuxi Li , Hao Xiao , John See , Junni Zou , Hongkai Xiong , Jingdong Wang , Tao Mei

Spatially explicit capture recapture (SECR) models have gained enormous popularity to solve abundance estimation problems in ecology. In this study, we develop a novel Bayesian SECR model that disentangles the process of animal movement…

Applications · Statistics 2018-01-01 Soumen Dey , Mohan Delampady , K. Ullas Karanth , Arjun M. Gopalaswamy

Understanding space usage and resource selection is a primary focus of many studies of animal populations. Usually, such studies are based on location data obtained from telemetry, and resource selection functions (RSF) are used for…

Quantitative Methods · Quantitative Biology 2012-07-16 J. Andrew Royle , Richard B. Chandler

Automatic species classification in camera traps would greatly help the biodiversity monitoring and species analysis in the earth. In order to accelerate the development of automatic species classification task, "Microsoft AI for Earth"…

Computer Vision and Pattern Recognition · Computer Science 2019-07-31 Abulikemu Abuduweili , Xin Wu , Xingchen Tao

The segmentation and classification of animals from camera-trap images is due to the conditions under which the images are taken, a difficult task. This work presents a method for classifying and segmenting mammal genera from camera-trap…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Jhony-Heriberto Giraldo-Zuluaga , Augusto Salazar , Alexander Gomez , Angélica Diaz-Pulido

We present a novel large-scale dataset and comprehensive baselines for end-to-end pedestrian detection and person recognition in raw video frames. Our baselines address three issues: the performance of various combinations of detectors and…

Computer Vision and Pattern Recognition · Computer Science 2017-04-07 Liang Zheng , Hengheng Zhang , Shaoyan Sun , Manmohan Chandraker , Yi Yang , Qi Tian

The standard approach for visual place recognition is to use global image descriptors to retrieve the most similar database images for a given query image. The results can then be further improved with re-ranking methods that re-order the…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Gustav Hanning , Gabrielle Flood , Viktor Larsson

In both terrestrial and marine ecology, physical tagging is a frequently used method to study population dynamics and behavior. However, such tagging techniques are increasingly being replaced by individual re-identification using image…

Computer Vision and Pattern Recognition · Computer Science 2023-01-03 Ørjan Langøy Olsen , Tonje Knutsen Sørdalen , Morten Goodwin , Ketil Malde , Kristian Muri Knausgård , Kim Tallaksen Halvorsen

Existing person re-identification (re-ID) research mainly focuses on pedestrian identity matching across cameras in adjacent areas. However, in reality, it is inevitable to face the problem of pedestrian identity matching across…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Huafeng Li , Yanmei Mao , Yafei Zhang , Guanqiu Qi , Zhengtao Yu

While non-invasive sampling is more and more commonly used in capture-recapture (CR) experiments, it carries a higher risk of misidentifications than direct observations. As a consequence, one must screen the data to retain only the…

Quantitative Methods · Quantitative Biology 2023-04-04 Rémi Fraysse , Rémi Choquet , Carlo Costantini , Roger Pradel

Image Registration (IR) is the process of aligning two (or more) images of the same scene taken at different times, different viewpoints and/or by different sensors. It is an important, crucial step in various image analysis tasks where…

Computer Vision and Pattern Recognition · Computer Science 2017-11-21 Sarit Chicotay , Eli David , Nathan S. Netanyahu

The main contribution of this paper is a simple semi-supervised pipeline that only uses the original training set without collecting extra data. It is challenging in 1) how to obtain more training data only from the training set and 2) how…

Computer Vision and Pattern Recognition · Computer Science 2017-08-23 Zhedong Zheng , Liang Zheng , Yi Yang

Crowd counting is a challenging problem especially in the presence of huge crowd diversity across images and complex cluttered crowd-like background regions, where most previous approaches do not generalize well and consequently produce…

Computer Vision and Pattern Recognition · Computer Science 2020-01-08 Usman Sajid , Guanghui Wang

Matching pedestrians across disjoint camera views, known as person re-identification (re-id), is a challenging problem that is of importance to visual recognition and surveillance. Most existing methods exploit local regions within spatial…

Computer Vision and Pattern Recognition · Computer Science 2017-10-17 Lin Wu , Yang Wang , Xue Li , Junbin Gao

Camera traps are vital for large-scale biodiversity monitoring, yet accurate automated analysis remains challenging due to diverse deployment environments. While the computer vision community has mostly framed this challenge as cross-domain…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Sooyoung Jeon , Hongjie Tian , Lemeng Wang , Zheda Mai , Vidhi Bakshi , Jiacheng Hou , Ping Zhang , Arpita Chowdhury , Jianyang Gu , Wei-Lun Chao

Camera-based animal re-identification (Animal Re-ID) can support wildlife monitoring and precision livestock management in large outdoor environments with limited wireless connectivity. In these settings, inference must run directly on…

Computer Vision and Pattern Recognition · Computer Science 2025-12-10 Yubo Chen , Di Zhao , Yun Sing Koh , Talia Xu

Giant panda (panda) is a highly endangered animal. Significant efforts and resources have been put on panda conservation. To measure effectiveness of conservation schemes, estimating its population size in wild is an important task. The…

Computer Vision and Pattern Recognition · Computer Science 2019-10-01 Wojciech Michal Matkowski , Adams Wai Kin Kong , Han Su , Peng Chen , Rong Hou , Zhihe Zhang

Vehicle re-identification (Vehicle ReID) aims at retrieving vehicle images across disjoint surveillance camera views. The majority of vehicle ReID research is heavily reliant upon supervisory labels from specific human-collected datasets…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Zhigang Chang , Shibao Zheng