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In a noisy environment with weak single levels, quantum illumination can outperform classical illumination in determining the presence and range of a target object even in the limit of sub-optimal measurements based on non-simultaneous,…

Quantum Physics · Physics 2023-08-08 Richard J. Murchie , Jonathan D. Pritchard , John Jeffers

Due to its variety of applications in the real-world, the task of single image-based crowd counting has received a lot of interest in the recent years. Recently, several approaches have been proposed to address various problems encountered…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Vishwanath A. Sindagi , Rajeev Yasarla , Vishal M. Patel

Automatic saliency prediction in 360{\deg} videos is critical for viewpoint guidance applications (e.g., Facebook 360 Guide). We propose a spatial-temporal network which is (1) weakly-supervised trained and (2) tailor-made for 360{\deg}…

Computer Vision and Pattern Recognition · Computer Science 2018-06-06 Hsien-Tzu Cheng , Chun-Hung Chao , Jin-Dong Dong , Hao-Kai Wen , Tyng-Luh Liu , Min Sun

We consider the challenging problem of predicting intrinsic object properties from a single image by exploiting differentiable renderers. Many previous learning-based approaches for inverse graphics adopt rasterization-based renderers and…

Computer Vision and Pattern Recognition · Computer Science 2021-11-02 Wenzheng Chen , Joey Litalien , Jun Gao , Zian Wang , Clement Fuji Tsang , Sameh Khamis , Or Litany , Sanja Fidler

Progress in lighting estimation is tracked by computing existing image quality assessment (IQA) metrics on images from standard datasets. While this may appear to be a reasonable approach, we demonstrate that doing so does not correlate to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Justine Giroux , Mohammad Reza Karimi Dastjerdi , Yannick Hold-Geoffroy , Javier Vazquez-Corral , Jean-François Lalonde

The use of computer generated images to train Deep Neural Networks is a viable alternative to real images when the latter are scarce or expensive. In this paper, we study how the illumination model used by the rendering software affects the…

Computer Vision and Pattern Recognition · Computer Science 2020-06-17 Xin Zhang , Ning Jia , Ioannis Ivrissimtzis

Imaging and perception in photon-limited scenarios is necessary for various applications, e.g., night surveillance or photography, high-speed photography, and autonomous driving. In these cases, cameras suffer from low signal-to-noise…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Bo Zhang , Yuchen Guo , Runzhao Yang , Zhihong Zhang , Jiayi Xie , Jinli Suo , Qionghai Dai

Localizing target objects in images is an important task in computer vision. Often it is the first step towards solving a variety of applications in autonomous driving, maintenance, quality insurance, robotics, and augmented reality. Best…

Computer Vision and Pattern Recognition · Computer Science 2024-11-21 Thomas Pöllabauer

The representation of consistent mixed reality (XR) environments requires adequate real and virtual illumination composition in real-time. Estimating the lighting of a real scenario is still a challenge. Due to the ill-posed nature of the…

Computer Vision and Pattern Recognition · Computer Science 2021-08-19 Bruno Augusto Dorta Marques , Esteban Walter Gonzalez Clua , Anselmo Antunes Montenegro , Cristina Nader Vasconcelos

Intrinsic decomposition is a fundamental mid-level vision problem that plays a crucial role in various inverse rendering and computational photography pipelines. Generating highly accurate intrinsic decompositions is an inherently…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Chris Careaga , Yağız Aksoy

Relative colour constancy is an essential requirement for many scientific imaging applications. However, most digital cameras differ in their image formations and native sensor output is usually inaccessible, e.g., in smartphone camera…

Image and Video Processing · Electrical Eng. & Systems 2022-11-23 Yunfeng Zhao , Stuart Ferguson , Huiyu Zhou , Chris Elliott , Karen Rafferty

In this paper, we propose a color to grayscale image conversion algorithm (C2G) that aims to preserve the perceptual properties of the color image as much as possible. To this end, we propose measures for two perceptual properties based on…

Computer Vision and Pattern Recognition · Computer Science 2016-05-09 Shaodi You , Nick Barnes , Janine Walker

This document presents novel datasets, constructed by employing the iCub robot equipped with an additional depth sensor and color camera. We used the robot to acquire color and depth information for 210 objects in different acquisition…

Robotics · Computer Science 2020-03-05 Murat Kirtay , Ugo Albanese , Lorenzo Vannucci , Guido Schillaci , Cecilia Laschi , Egidio Falotico

In computational imaging, hardware for signal sampling and software for object reconstruction are designed in tandem for improved capability. Examples of such systems include computed tomography (CT), magnetic resonance imaging (MRI), and…

Image and Video Processing · Electrical Eng. & Systems 2022-11-01 Andrew Olsen , Yolanda Hu , Vidya Ganapati

In this paper, we study the importance of pre-training for the generalization capability in the color constancy problem. We propose two novel approaches based on convolutional autoencoders: an unsupervised pre-training algorithm using a…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Firas Laakom , Jenni Raitoharju , Alexandros Iosifidis , Jarno Nikkanen , Moncef Gabbouj

Fine-grained image recognition is a longstanding computer vision challenge that focuses on differentiating objects belonging to multiple subordinate categories within the same meta-category. Since images belonging to the same meta-category…

Computer Vision and Pattern Recognition · Computer Science 2023-09-04 Yifan Pu , Yizeng Han , Yulin Wang , Junlan Feng , Chao Deng , Gao Huang

In the deep-learning community new algorithms are published at an incredible pace. Therefore, solving an image classification problem for new datasets becomes a challenging task, as it requires to re-evaluate published algorithms and their…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Florian Scheidegger , Roxana Istrate , Giovanni Mariani , Luca Benini , Costas Bekas , Cristiano Malossi

In recent years, the fusion of camera data with LiDAR measurements has emerged as a powerful approach to enhance spatial understanding. This study introduces a novel, hardware-agnostic methodology that generates colourised point clouds from…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Pasindu Ranasinghe , Dibyayan Patra , Bikram Banerjee , Simit Raval

We present a deep learning solution for estimating the incident illumination at any 3D location within a scene from an input narrow-baseline stereo image pair. Previous approaches for predicting global illumination from images either…

Computer Vision and Pattern Recognition · Computer Science 2020-05-14 Pratul P. Srinivasan , Ben Mildenhall , Matthew Tancik , Jonathan T. Barron , Richard Tucker , Noah Snavely

Automatic image clustering is a cornerstone of computer vision, yet its application to image enhancement remains limited, primarily due to the difficulty of defining clusters that are meaningful for this specific task. To address this…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Giulia Bonino , Luca Alberto Rizzo