English
Related papers

Related papers: CrowdSim2: an Open Synthetic Benchmark for Object …

200 papers

This article aims to use graphic engines to simulate a large number of training data that have free annotations and possibly strongly resemble to real-world data. Between synthetic and real, a two-level domain gap exists, involving content…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Yue Yao , Liang Zheng , Xiaodong Yang , Milind Napthade , Tom Gedeon

Synthetic image generation has opened up new opportunities but has also created threats in regard to privacy, authenticity, and security. Detecting fake images is of paramount importance to prevent illegal activities, and previous research…

Computer Vision and Pattern Recognition · Computer Science 2023-02-27 Md Awsafur Rahman , Bishmoy Paul , Najibul Haque Sarker , Zaber Ibn Abdul Hakim , Shaikh Anowarul Fattah

We present a novel procedural framework to generate an arbitrary number of labeled crowd videos (LCrowdV). The resulting crowd video datasets are used to design accurate algorithms or training models for crowded scene understanding. Our…

Computer Vision and Pattern Recognition · Computer Science 2016-07-05 Ernest Cheung , Tsan Kwong Wong , Aniket Bera , Xiaogang Wang , Dinesh Manocha

Acquiring fine-grained object detection annotations in unconstrained images is time-consuming, expensive, and prone to noise, especially in crowdsourcing scenarios. Most prior object detection methods assume accurate annotations; A few…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Zhi Qin Tan , Olga Isupova , Gustavo Carneiro , Xiatian Zhu , Yunpeng Li

Despite all the challenges and limitations, vision-based vehicle speed detection is gaining research interest due to its great potential benefits such as cost reduction, and enhanced additional functions. As stated in a recent survey [1],…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Antonio Hernández Martínez , Javier Lorenzo Díaz , Iván García Daza , David Fernández Llorca

While emerging deep-learning systems have outclassed knowledge-based approaches in many tasks, their application to detection tasks for autonomous technologies remains an open field for scientific exploration. Broadly, there are two major…

Human-Computer Interaction · Computer Science 2015-12-08 Pranav Rajpurkar , Toki Migimatsu , Jeff Kiske , Royce Cheng-Yue , Sameep Tandon , Tao Wang , Andrew Ng

Perceiving pedestrians in highly crowded urban environments is a difficult long-tail problem for learning-based autonomous perception. Speeding up 3D ground truth generation for such challenging scenes is performance-critical yet very…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Shichao Li , Peiliang Li , Qing Lian , Peng Yun , Xiaozhi Chen

State-of-the-art methods for counting people in crowded scenes rely on deep networks to estimate crowd density. While effective, these data-driven approaches rely on large amount of data annotation to achieve good performance, which stops…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Weizhe Liu , Nikita Durasov , Pascal Fua

Crowd density estimation is a well-known computer vision task aimed at estimating the density distribution of people in an image. The main challenge in this domain is the reliance on fine-grained location-level annotations, (i.e. points…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Mattia Litrico , Feng Chen , Michael Pound , Sotirios A Tsaftaris , Sebastiano Battiato , Mario Valerio Giuffrida

Training models to high-end performance requires availability of large labeled datasets, which are expensive to get. The goal of our work is to automatically synthesize labeled datasets that are relevant for a downstream task. We propose…

Computer Vision and Pattern Recognition · Computer Science 2019-04-29 Amlan Kar , Aayush Prakash , Ming-Yu Liu , Eric Cameracci , Justin Yuan , Matt Rusiniak , David Acuna , Antonio Torralba , Sanja Fidler

Object detection in radar imagery with neural networks shows great potential for improving autonomous driving. However, obtaining annotated datasets from real radar images, crucial for training these networks, is challenging, especially in…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Oded Bialer , Yuval Haitman

Recent advances in data-centric artificial intelligence highlight inherent limitations in object recognition datasets. One of the primary issues stems from the semantic gap problem, which results in complex many-to-many mappings between…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Xiaolei Diao , Fausto Giunchiglia

Traffic light detection is essential for self-driving cars to navigate safely in urban areas. Publicly available traffic light datasets are inadequate for the development of algorithms for detecting distant traffic lights that provide…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Harindu Jayarathne , Tharindu Samarakoon , Hasara Koralege , Asitha Divisekara , Ranga Rodrigo , Peshala Jayasekara

Aiming at facilitating a real-world, ever-evolving and scalable autonomous driving system, we present a large-scale dataset for standardizing the evaluation of different self-supervised and semi-supervised approaches by learning from raw…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Jianhua Han , Xiwen Liang , Hang Xu , Kai Chen , Lanqing Hong , Jiageng Mao , Chaoqiang Ye , Wei Zhang , Zhenguo Li , Xiaodan Liang , Chunjing Xu

Crowd simulation is a central topic in several fields including graphics. To achieve high-fidelity simulations, data has been increasingly relied upon for analysis and simulation guidance. However, the information in real-world data is…

Graphics · Computer Science 2020-04-30 Feixiang He , Yuanhang Xiang , Xi Zhao , He Wang

Object counting, whose aim is to estimate the number of objects from a given image, is an important and challenging computation task. Significant efforts have been devoted to addressing this problem and achieved great progress, yet counting…

Computer Vision and Pattern Recognition · Computer Science 2021-05-05 Guangshuai Gao , Qingjie Liu , Yunhong Wang

We present an approach to synthesize highly photorealistic images of 3D object models, which we use to train a convolutional neural network for detecting the objects in real images. The proposed approach has three key ingredients: (1) 3D…

Computer Vision and Pattern Recognition · Computer Science 2019-02-12 Tomas Hodan , Vibhav Vineet , Ran Gal , Emanuel Shalev , Jon Hanzelka , Treb Connell , Pedro Urbina , Sudipta N. Sinha , Brian Guenter

Realistic and controllable simulation is critical for advancing end-to-end autonomous driving, yet existing approaches often struggle to support novel view synthesis under large viewpoint changes or to ensure geometric consistency. We…

Deep learning-based methods for video pedestrian detection and tracking require large volumes of training data to achieve good performance. However, data acquisition in crowded public environments raises data privacy concerns -- we are not…

Computer Vision and Pattern Recognition · Computer Science 2021-08-24 Matteo Fabbri , Guillem Braso , Gianluca Maugeri , Orcun Cetintas , Riccardo Gasparini , Aljosa Osep , Simone Calderara , Laura Leal-Taixe , Rita Cucchiara

Supervised crowd counting relies heavily on costly manual labeling, which is difficult and expensive, especially in dense scenes. To alleviate the problem, we propose a novel unsupervised framework for crowd counting, named CrowdCLIP. The…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Dingkang Liang , Jiahao Xie , Zhikang Zou , Xiaoqing Ye , Wei Xu , Xiang Bai