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High-density object counting in surveillance scenes is challenging mainly due to the drastic variation of object scales. The prevalence of deep learning has largely boosted the object counting accuracy on several benchmark datasets.…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Muming Zhao , Jian Zhang , Chongyang Zhang , Wenjun Zhang

Visual counting, a task that predicts the number of objects from an image/video, is an open-set problem by nature, i.e., the number of population can vary in $[0,+\infty)$ in theory. However, the collected images and labeled count values…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Haipeng Xiong , Hao Lu , Chengxin Liu , Liang Liu , Zhiguo Cao , Chunhua Shen

Crowd counting is a challenging task due to the issues such as scale variation and perspective variation in real crowd scenes. In this paper, we propose a novel Cascaded Residual Density Network (CRDNet) in a coarse-to-fine approach to…

Computer Vision and Pattern Recognition · Computer Science 2021-07-30 Kun Zhao , Luchuan Song , Bin Liu , Qi Chu , Nenghai Yu

Object detection in remote sensing images (RSIs) often suffers from several increasing challenges, including the large variation in object scales and the diverse-ranging context. Prior methods tried to address these challenges by expanding…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Xinhao Cai , Qiuxia Lai , Yuwei Wang , Wenguan Wang , Zeren Sun , Yazhou Yao

The problem of counting crowds in varying density scenes or in different density regions of the same scene, named as pan-density crowd counting, is highly challenging. Previous methods are designed for single density scenes or do not fully…

Computer Vision and Pattern Recognition · Computer Science 2020-01-10 Yukun Tian , Yiming Lei , Junping Zhang , James Z. Wang

Camouflaged object detection is an emerging and challenging computer vision task that requires identifying and segmenting objects that blend seamlessly into their environments due to high similarity in color, texture, and size. This task is…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Leena Alghamdi , Muhammad Usman , Hafeez Anwar , Abdul Bais , Saeed Anwar

Recent research on remote sensing object detection has largely focused on improving the representation of oriented bounding boxes but has overlooked the unique prior knowledge presented in remote sensing scenarios. Such prior knowledge can…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Yuxuan Li , Qibin Hou , Zhaohui Zheng , Ming-Ming Cheng , Jian Yang , Xiang Li

As a common method in the field of computer vision, spatial attention mechanism has been widely used in semantic segmentation of remote sensing images due to its outstanding long-range dependency modeling capability. However, remote sensing…

Image and Video Processing · Electrical Eng. & Systems 2025-01-24 Xiaowen Ma , Rongrong Lian , Zhenkai Wu , Renxiang Guan , Tingfeng Hong , Mengjiao Zhao , Mengting Ma , Jiangtao Nie , Zhenhong Du , Siyang Song , Wei Zhang

Counting people or objects with significantly varying scales and densities has attracted much interest from the research community and yet it remains an open problem. In this paper, we propose a simple but an efficient and effective…

Computer Vision and Pattern Recognition · Computer Science 2019-04-18 Lei Liu , Jie Jiang , Wenjing Jia , Saeed Amirgholipour , Michelle Zeibots , Xiangjian He

Human pose estimation is a fundamental yet challenging task in computer vision. Although deep learning techniques have made great progress in this area, difficult scenarios (e.g., invisible keypoints, occlusions, complex multi-person…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Yabo Xiao , Dongdong Yu , Xiaojuan Wang , Tianqi Lv , Yiqi Fan , Lingrui Wu

We define the object detection from imagery problem as estimating a very large but extremely sparse bounding box dependent probability distribution. Subsequently we identify a sparse distribution estimation scheme, Directed Sparse Sampling,…

Computer Vision and Pattern Recognition · Computer Science 2017-07-24 Lachlan Tychsen-Smith , Lars Petersson

In this paper, we consider the problem of crowd counting in images. Given an image of a crowded scene, our goal is to estimate the density map of this image, where each pixel value in the density map corresponds to the crowd density at the…

Computer Vision and Pattern Recognition · Computer Science 2019-03-07 Mohammad Asiful Hossain , Mehrdad Hosseinzadeh , Omit Chanda , Yang Wang

Semantic Scene Completion (SSC) aims to simultaneously predict the volumetric occupancy and semantic category of a 3D scene. It helps intelligent devices to understand and interact with the surrounding scenes. Due to the high-memory…

Computer Vision and Pattern Recognition · Computer Science 2019-08-02 Pingping Zhang , Wei Liu , Yinjie Lei , Huchuan Lu , Xiaoyun Yang

Recent work has shown that depth estimation from a stereo pair of images can be formulated as a supervised learning task to be resolved with convolutional neural networks (CNNs). However, current architectures rely on patch-based Siamese…

Computer Vision and Pattern Recognition · Computer Science 2018-03-26 Jia-Ren Chang , Yong-Sheng Chen

Visual counting, a task that aims to estimate the number of objects from an image/video, is an open-set problem by nature, i.e., the number of population can vary in [0, inf) in theory. However, collected data and labeled instances are…

Computer Vision and Pattern Recognition · Computer Science 2020-06-02 Haipeng Xiong , Hao Lu , Chengxin Liu , Liang Liu , Chunhua Shen , Zhiguo Cao

Dense panoptic prediction is a key ingredient in many existing applications such as autonomous driving, automated warehouses or remote sensing. Many of these applications require fast inference over large input resolutions on affordable or…

Computer Vision and Pattern Recognition · Computer Science 2023-04-19 Josip Šarić , Marin Oršić , Siniša Šegvić

Due to the more dramatic multi-scale variations and more complicated foregrounds and backgrounds in optical remote sensing images (RSIs), the salient object detection (SOD) for optical RSIs becomes a huge challenge. However, different from…

Computer Vision and Pattern Recognition · Computer Science 2022-05-19 Yuhan Lin , Han Sun , Ningzhong Liu , Yetong Bian , Jun Cen , Huiyu Zhou

Deep convolutional neural networks (DCNNs) have achieved great success in monocular depth estimation (MDE). However, few existing works take the contributions for MDE of different levels feature maps into account, leading to inaccurate…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Yifang Xu , Chenglei Peng , Ming Li , Yang Li , Sidan Du

Scene text detection methods based on deep learning have achieved remarkable results over the past years. However, due to the high diversity and complexity of natural scenes, previous state-of-the-art text detection methods may still…

Computer Vision and Pattern Recognition · Computer Science 2018-11-22 Enze Xie , Yuhang Zang , Shuai Shao , Gang Yu , Cong Yao , Guangyao Li

3D dense captioning, as an emerging vision-language task, aims to identify and locate each object from a set of point clouds and generate a distinctive natural language sentence for describing each located object. However, the existing…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Yufeng Zhong , Long Xu , Jiebo Luo , Lin Ma