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Related papers: Open-World Object Counting in Videos

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The flexibility and accuracy of methods for automatically counting objects in images and videos are limited by the way the object can be specified. While existing methods allow users to describe the target object with text and visual…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Niki Amini-Naieni , Andrew Zisserman

The goal of this paper is to improve the generality and accuracy of open-vocabulary object counting in images. To improve the generality, we repurpose an open-vocabulary detection foundation model (GroundingDINO) for the counting task, and…

Computer Vision and Pattern Recognition · Computer Science 2025-03-12 Niki Amini-Naieni , Tengda Han , Andrew Zisserman

Our objective is open-world object counting in images, where the target object class is specified by a text description. To this end, we propose CounTX, a class-agnostic, single-stage model using a transformer decoder counting head on top…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Niki Amini-Naieni , Kiana Amini-Naieni , Tengda Han , Andrew Zisserman

Visual object counting is a fundamental computer vision task underpinning numerous real-world applications, from cell counting in biomedicine to traffic and wildlife monitoring. However, existing methods struggle to handle the challenge of…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Corentin Dumery , Noa Etté , Aoxiang Fan , Ren Li , Jingyi Xu , Hieu Le , Pascal Fua

We introduce T-Rex, an interactive object counting model designed to first detect and then count any objects. We formulate object counting as an open-set object detection task with the integration of visual prompts. Users can specify the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-23 Qing Jiang , Feng Li , Tianhe Ren , Shilong Liu , Zhaoyang Zeng , Kent Yu , Lei Zhang

Existing works on visual counting primarily focus on one specific category at a time, such as people, animals, and cells. In this paper, we are interested in counting everything, that is to count objects from any category given only a few…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Viresh Ranjan , Udbhav Sharma , Thu Nguyen , Minh Hoai

We are interested in counting the number of instances of object classes in natural, everyday images. Previous counting approaches tackle the problem in restricted domains such as counting pedestrians in surveillance videos. Counts can also…

Computer Vision and Pattern Recognition · Computer Science 2017-05-10 Prithvijit Chattopadhyay , Ramakrishna Vedantam , Ramprasaath R. Selvaraju , Dhruv Batra , Devi Parikh

Open-vocabulary multi-object tracking (OVMOT) represents a critical new challenge involving the detection and tracking of diverse object categories in videos, encompassing both seen categories (base classes) and unseen categories (novel…

Computer Vision and Pattern Recognition · Computer Science 2024-10-14 Zekun Qian , Ruize Han , Junhui Hou , Linqi Song , Wei Feng

Open-vocabulary object perception has become an important topic in artificial intelligence, which aims to identify objects with novel classes that have not been seen during training. Under this setting, open-vocabulary object detection…

Computer Vision and Pattern Recognition · Computer Science 2024-10-24 Haiji Liang , Ruize Han

Accurately controlling object count in text-to-image generation remains a key challenge. Supervised methods often fail, as training data rarely covers all count variations. Methods that manipulate the denoising process to add or remove…

Computer Vision and Pattern Recognition · Computer Science 2025-06-06 Oz Zafar , Yuval Cohen , Lior Wolf , Idan Schwartz

Object counting aims to estimate the number of objects in images. The leading counting approaches focus on the single category counting task and achieve impressive performance. Note that there are multiple categories of objects in real…

Computer Vision and Pattern Recognition · Computer Science 2021-09-01 Wei Xu , Dingkang Liang , Yixiao Zheng , Zhanyu Ma

Dense object counting or crowd counting has come a long way thanks to the recent development in the vision community. However, indiscernible object counting, which aims to count the number of targets that are blended with respect to their…

Computer Vision and Pattern Recognition · Computer Science 2024-03-07 Cheng-Yen Yang , Hsiang-Wei Huang , Zhongyu Jiang , Hao Wang , Farron Wallace , Jenq-Neng Hwang

Video Instance Segmentation (VIS) aims at segmenting and categorizing objects in videos from a closed set of training categories, lacking the generalization ability to handle novel categories in real-world videos. To address this…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Haochen Wang , Cilin Yan , Shuai Wang , Xiaolong Jiang , XU Tang , Yao Hu , Weidi Xie , Efstratios Gavves

The recent trend in 2D multiple object tracking (MOT) is jointly solving detection and tracking, where object detection and appearance feature (or motion) are learned simultaneously. Despite competitive performance, in crowded scenes, joint…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Weihong Ren , Denglu Wu , Hui Cao , Xi'ai Chen , Zhi Han , Honghai Liu

Visual object counting is a fundamental computer vision task in industrial inspection, where accurate, high-throughput inventory tracking and quality assurance are critical. Moreover, manufactured parts are often too light to reliably…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Corentin Dumery , Noa Etté , Aoxiang Fan , Ren Li , Jingyi Xu , Hieu Le , Pascal Fua

In this paper, we consider the problem of generalised visual object counting, with the goal of developing a computational model for counting the number of objects from arbitrary semantic categories, using arbitrary number of "exemplars",…

Computer Vision and Pattern Recognition · Computer Science 2023-06-05 Chang Liu , Yujie Zhong , Andrew Zisserman , Weidi Xie

We present an architecture and a training recipe that adapts pre-trained open-world image models to localization in videos. Understanding the open visual world (without being constrained by fixed label spaces) is crucial for many real-world…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Georg Heigold , Matthias Minderer , Alexey Gritsenko , Alex Bewley , Daniel Keysers , Mario Lučić , Fisher Yu , Thomas Kipf

Tracking objects with persistence in cluttered and dynamic environments remains a difficult challenge for computer vision systems. In this paper, we introduce $\textbf{TCOW}$, a new benchmark and model for visual tracking through heavy…

Computer Vision and Pattern Recognition · Computer Science 2023-05-05 Basile Van Hoorick , Pavel Tokmakov , Simon Stent , Jie Li , Carl Vondrick

We introduce a dataset of annotations of temporal repetitions in videos. The dataset, OVR (pronounced as over), contains annotations for over 72K videos, with each annotation specifying the number of repetitions, the start and end time of…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Debidatta Dwibedi , Yusuf Aytar , Jonathan Tompson , Andrew Zisserman

Counting the number of items in a visual scene remains a fundamental yet challenging task in computer vision. Traditional approaches to solving this problem rely on domain-specific counting architectures, which are trained using datasets…

Computer Vision and Pattern Recognition · Computer Science 2025-12-18 Kuinan Hou , Jing Mi , Marco Zorzi , Lamberto Ballan , Alberto Testolin
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