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Recently multi-view crowd counting using deep neural networks has been proposed to enable counting in large and wide scenes using multiple cameras. The current methods project the camera-view features to the average-height plane of the 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-10-31 Qi Zhang , Antoni B. Chan

The mainstream crowd counting methods usually utilize the convolution neural network (CNN) to regress a density map, requiring point-level annotations. However, annotating each person with a point is an expensive and laborious process.…

Computer Vision and Pattern Recognition · Computer Science 2022-09-09 Dingkang Liang , Xiwu Chen , Wei Xu , Yu Zhou , Xiang Bai

To better address challenging issues of the irregularity and inhomogeneity inherently present in 3D point clouds, researchers have been shifting their focus from the design of hand-craft point feature towards the learning of 3D point…

Computer Vision and Pattern Recognition · Computer Science 2022-11-21 Xiang Li , Mingyang Wang , Congcong Wen , Lingjing Wang , Nan Zhou , Yi Fang

Point cloud segmentation (PCS) aims to make per-point predictions and enables robots and autonomous driving cars to understand the environment. The range image is a dense representation of a large-scale outdoor point cloud, and segmentation…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Bike Chen , Chen Gong , Antti Tikanmäki , Juha Röning

In this paper, we focus on the crowd localization task, a crucial topic of crowd analysis. Most regression-based methods utilize convolution neural networks (CNN) to regress a density map, which can not accurately locate the instance in the…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Dingkang Liang , Wei Xu , Yingying Zhu , Yu Zhou

Due to domain shift, a large performance drop is usually observed when a trained crowd counting model is deployed in the wild. While existing domain-adaptive crowd counting methods achieve promising results, they typically regard each crowd…

Computer Vision and Pattern Recognition · Computer Science 2023-04-03 Yongtuo Liu , Dan Xu , Sucheng Ren , Hanjie Wu , Hongmin Cai , Shengfeng He

Crowd counting remains a challenging task because the presence of drastic scale variation, density inconsistency, and complex background can seriously degrade the counting accuracy. To battle the ingrained issue of accuracy degradation, we…

Computer Vision and Pattern Recognition · Computer Science 2020-12-21 Mingjie Wang , Hao Cai , Xianfeng Han , Jun Zhou , Minglun Gong

Fine-grained visual classification aims to recognize images belonging to multiple sub-categories within a same category. It is a challenging task due to the inherently subtle variations among highly-confused categories. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Tian Zhang , Dongliang Chang , Zhanyu Ma , Jun Guo

Humans perform co-saliency detection by first summarizing the consensus knowledge in the whole group and then searching corresponding objects in each image. Previous methods usually lack robustness, scalability, or stability for the first…

Computer Vision and Pattern Recognition · Computer Science 2021-10-04 Ni Zhang , Junwei Han , Nian Liu , Ling Shao

Occlusion is one of the fundamental challenges in crowd counting. In the community, various data-driven approaches have been developed to address this issue, yet their effectiveness is limited. This is mainly because most existing crowd…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Runling Long , Yunlong Wang , Jia Wan , Xiang Deng , Xinting Zhu , Weili Guan , Antoni B. Chan , Liqiang Nie

In this paper, we propose a method for image-set classification based on convex cone models. Image set classification aims to classify a set of images, which were usually obtained from video frames or multi-view cameras, into a target…

Computer Vision and Pattern Recognition · Computer Science 2019-03-18 Naoya Sogi , Rui Zhu , Jing-Hao Xue , Kazuhiro Fukui

It is a challenging task to accurately perform semantic segmentation due to the complexity of real picture scenes. Many semantic segmentation methods based on traditional deep learning insufficiently captured the semantic and appearance…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Haitong Tang , Shuang He , Mengduo Yang , Xia Lu , Qin Yu , Kaiyue Liu , Hongjie Yan , Nizhuan Wang

The mainstream crowd counting methods regress density map and integrate it to obtain counting results. Since the density representation to one head accords to its adjacent distribution, it embeds the same category objects with variant…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Qi Wang , Juncheng Wang , Junyu Gao , Yuan Yuan , Xuelong Li

Deep neural networks have faced many problems in hyperspectral image classification, including the ineffective utilization of spectral-spatial joint information and the problems of gradient vanishing and overfitting that arise with…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Guandong Li , Mengxia Ye

RGB-D semantic segmentation can be advanced with convolutional neural networks due to the availability of Depth data. Although objects cannot be easily discriminated by just the 2D appearance, with the local pixel difference and geometric…

Computer Vision and Pattern Recognition · Computer Science 2023-02-24 Jun Yang , Lizhi Bai , Yaoru Sun , Chunqi Tian , Maoyu Mao , Guorun Wang

Region of Interest (ROI) crowd counting can be formulated as a regression problem of learning a mapping from an image or a video frame to a crowd density map. Recently, convolutional neural network (CNN) models have achieved promising…

Computer Vision and Pattern Recognition · Computer Science 2017-07-26 Feng Xiong , Xingjian Shi , Dit-Yan Yeung

Previous work generally believes that improving the spatial invariance of convolutional networks is the key to object counting. However, after verifying several mainstream counting networks, we surprisingly found too strict pixel-level…

Computer Vision and Pattern Recognition · Computer Science 2022-08-19 Zhi-Qi Cheng , Qi Dai , Hong Li , JingKuan Song , Xiao Wu , Alexander G. Hauptmann

Automatic detection of shadow regions in an image is a difficult task due to the lack of prior information about the illumination source and the dynamic of the scene objects. To address this problem, in this paper, a deep-learning based…

Computer Vision and Pattern Recognition · Computer Science 2018-10-16 Sorour Mohajerani , Parvaneh Saeedi

We propose a framework for online Change Point Detection (CPD) from multi-entity, multivariate time series data, motivated by applications in crowd monitoring where traditional sensing methods (e.g., video surveillance) may be infeasible.…

Signal Processing · Electrical Eng. & Systems 2025-09-24 Bahar Kor , Bipin Gaikwad , Abani Patra , Eric L. Miller

The task of crowd counting in varying density scenes is an extremely difficult challenge due to large scale variations. In this paper, we propose a novel dual path multi-scale fusion network architecture with attention mechanism named…

Computer Vision and Pattern Recognition · Computer Science 2019-02-05 Liang Zhu , Zhijian Zhao , Chao Lu , Yining Lin , Yao Peng , Tangren Yao