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Deep optical images are often crowded with overlapping objects. This is especially true in the cores of galaxy clusters, where images of dozens of galaxies may lie atop one another. Accurate measurements of cluster properties require…

Instrumentation and Methods for Astrophysics · Physics 2015-12-03 Yuanyuan Zhang , Timothy A. McKay , Emmanuel Bertin , Tesla Jeltema , Christopher J. Miller , Eli Rykoff , Jeeseon Song

We seek to improve crowd counting as we perceive limits of currently prevalent density map estimation approach on both prediction accuracy and time efficiency. We leverage multilevel pixelation of density map as it helps improve SNR of…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Zhuojun Chen , Junhao Cheng , Yuchen Yuan , Dongping Liao , Yizhou Li , Jiancheng Lv

Crowd counting, which has been widely adopted for estimating the number of people in safety-critical scenes, is shown to be vulnerable to adversarial examples in the physical world (e.g., adversarial patches). Though harmful, adversarial…

Computer Vision and Pattern Recognition · Computer Science 2022-09-12 Shunchang Liu , Jiakai Wang , Aishan Liu , Yingwei Li , Yijie Gao , Xianglong Liu , Dacheng Tao

Image reconstruction from noisy sensor measurements is challenging and many methods have been proposed for it. Yet, most approaches focus on learning robust natural image priors while modeling the scene's noise statistics. In extremely…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Erez Yosef , Raja Giryes

Scene perception is essential for driving decision-making and traffic safety. However, fog, as a kind of common weather, frequently appears in the real world, especially in the mountain areas, making it difficult to accurately observe the…

Computer Vision and Pattern Recognition · Computer Science 2021-12-09 Jing You , Shaocheng Jia , Xin Pei , Danya Yao

In this paper, a novel Unified Multi-Task Learning Framework of Real-Time Drone Supervision for Crowd Counting (MFCC) is proposed, which utilizes an image fusion network architecture to fuse images from the visible and thermal infrared…

Computer Vision and Pattern Recognition · Computer Science 2023-12-21 Siqi Gu , Zhichao Lian

When capturing and storing images, devices inevitably introduce noise. Reducing this noise is a critical task called image denoising. Deep learning has become the de facto method for image denoising, especially with the emergence of…

Computer Vision and Pattern Recognition · Computer Science 2023-03-24 Haoyu Chen , Jinjin Gu , Yihao Liu , Salma Abdel Magid , Chao Dong , Qiong Wang , Hanspeter Pfister , Lei Zhu

Image denoising has achieved unprecedented progress as great efforts have been made to exploit effective deep denoisers. To improve the denoising performance in realworld, two typical solutions are used in recent trends: devising better…

Image and Video Processing · Electrical Eng. & Systems 2022-04-06 Yunhao Zou , Ying Fu

Deep neural networks provide state-of-the-art performance for image denoising, where the goal is to recover a near noise-free image from a noisy observation. The underlying principle is that neural networks trained on large datasets have…

Information Theory · Computer Science 2019-04-09 Reinhard Heckel , Wen Huang , Paul Hand , Vladislav Voroninski

State-of-the-art methods for counting people in crowded scenes rely on deep networks to estimate crowd density in the image plane. While useful for this purpose, this image-plane density has no immediate physical meaning because it is…

Computer Vision and Pattern Recognition · Computer Science 2019-07-19 Weizhe Liu , Krzysztof Lis , Mathieu Salzmann , Pascal Fua

We propose a novel crowd counting approach that leverages abundantly available unlabeled crowd imagery in a learning-to-rank framework. To induce a ranking of cropped images , we use the observation that any sub-image of a crowded scene…

Computer Vision and Pattern Recognition · Computer Science 2018-03-09 Xialei Liu , Joost van de Weijer , Andrew D. Bagdanov

Research in neural networks in the field of computer vision has achieved remarkable accuracy for point estimation. However, the uncertainty in the estimation is rarely addressed. Uncertainty quantification accompanied by point estimation…

Computer Vision and Pattern Recognition · Computer Science 2020-04-23 Min-hwan Oh , Peder A. Olsen , Karthikeyan Natesan Ramamurthy

Reliable point cloud data is essential for perception tasks \textit{e.g.} in robotics and autonomous driving applications. Adverse weather causes a specific type of noise to light detection and ranging (LiDAR) sensor data, which degrades…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Alvari Seppänen , Risto Ojala , Kari Tammi

Images and video frames captured by cameras placed throughout smart cities are often transmitted over the network to a server to be processed by deep neural networks for various tasks. Transmission of raw images, i.e., without any form of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Arian Bakhtiarnia , Błażej Leporowski , Lukas Esterle , Alexandros Iosifidis

Image-to-image translation is a common task in computer vision and has been rapidly increasing the impact on the field of medical imaging. Deep learning-based methods that employ conditional generative adversarial networks (cGANs), such as…

Image and Video Processing · Electrical Eng. & Systems 2024-02-05 Wentao Chen , Xichen Xu , Jie Luo , Weimin Zhou

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

In this paper, we address a new image forensics task, namely the detection of fake flood images generated by ClimateGAN architecture. We do so by proposing a hybrid deep learning architecture including both a detection and a localization…

Computer Vision and Pattern Recognition · Computer Science 2022-05-17 Jun Wang , Omran Alamayreh , Benedetta Tondi , Mauro Barni

State-of-the-art crowd counting models follow an encoder-decoder approach. Images are first processed by the encoder to extract features. Then, to account for perspective distortion, the highest-level feature map is fed to extra components…

Computer Vision and Pattern Recognition · Computer Science 2022-10-24 Yiming Ma , Victor Sanchez , Tanaya Guha

Neural networks struggle with image classification when biases are learned and misleads correlations, affecting their generalization and performance. Previous methods require attribute labels (e.g. background, color) or utilizes Generative…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Donggeun Ko , Dongjun Lee , Namjun Park , Wonkyeong Shim , Jaekwang Kim

In recent years, deep neural networks have been utilized in a wide variety of applications including image generation. In particular, generative adversarial networks (GANs) are able to produce highly realistic pictures as part of tasks such…

Image and Video Processing · Electrical Eng. & Systems 2020-04-20 Hyunsuk Ko , Dae Yeol Lee , Seunghyun Cho , Alan C. Bovik
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