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Images with different resolutions are ubiquitous in public person re-identification (ReID) datasets and real-world scenes, it is thus crucial for a person ReID model to handle the image resolution variations for improving its generalization…

Computer Vision and Pattern Recognition · Computer Science 2018-10-25 Zijie Zhuang , Haizhou Ai , Long Chen , Chong Shang

We present the first neural relighting approach for rendering high-fidelity personalized hands that can be animated in real-time under novel illumination. Our approach adopts a teacher-student framework, where the teacher learns appearance…

Computer Vision and Pattern Recognition · Computer Science 2023-02-10 Shun Iwase , Shunsuke Saito , Tomas Simon , Stephen Lombardi , Timur Bagautdinov , Rohan Joshi , Fabian Prada , Takaaki Shiratori , Yaser Sheikh , Jason Saragih

Undoing the image formation process and therefore decomposing appearance into its intrinsic properties is a challenging task due to the under-constraint nature of this inverse problem. While significant progress has been made on inferring…

Computer Vision and Pattern Recognition · Computer Science 2015-11-16 Konstantinos Rematas , Tobias Ritschel , Mario Fritz , Efstratios Gavves , Tinne Tuytelaars

Image classification models, including convolutional neural networks (CNNs), perform well on a variety of classification tasks but struggle under conditions of partial occlusion, i.e., conditions in which objects are partially covered from…

Computer Vision and Pattern Recognition · Computer Science 2024-09-18 Kaleb Kassaw , Francesco Luzi , Leslie M. Collins , Jordan M. Malof

Relighting, which synthesizes a novel view under a given lighting condition (unseen in training time), is a must feature for immersive photo-realistic experience. However, real-time relighting is challenging due to high computation cost of…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Euntae Choi , Vincent Carpentier , Seunghun Shin , Sungjoo Yoo

In natural image matting, the goal is to estimate the opacity of the foreground object in the image. This opacity controls the way the foreground and background is blended in transparent regions. In recent years, advances in deep learning…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Sebastian Lutz , Aljosa Smolic

Image hazing aims to render a hazy image from a given clean one, which could be applied to a variety of practical applications such as gaming, filming, photographic filtering, and image dehazing. To generate plausible haze, we study two…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Boyun Li , Yijie Lin , Xiao Liu , Peng Hu , Jiancheng Lv , Xi Peng

From a single picture of a scene, people can typically grasp the spatial layout immediately and even make good guesses at materials properties and where light is coming from to illuminate the scene. For example, we can reliably tell which…

Computer Vision and Pattern Recognition · Computer Science 2020-01-07 Kevin Karsch

Super-resolution reconstruction techniques entail the utilization of software algorithms to transform one or more sets of low-resolution images captured from the same scene into high-resolution images. In recent years, considerable…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Hao Yan , Zixiang Wang , Zhengjia Xu , Zhuoyue Wang , Zhizhong Wu , Ranran Lyu

In this paper we are extracting surface reflectance and natural environmental illumination from a reflectance map, i.e. from a single 2D image of a sphere of one material under one illumination. This is a notoriously difficult problem, yet…

Computer Vision and Pattern Recognition · Computer Science 2016-03-29 Stamatios Georgoulis , Konstantinos Rematas , Tobias Ritschel , Mario Fritz , Luc Van Gool , Tinne Tuytelaars

We introduce InverseFaceNet, a deep convolutional inverse rendering framework for faces that jointly estimates facial pose, shape, expression, reflectance and illumination from a single input image. By estimating all parameters from just a…

Computer Vision and Pattern Recognition · Computer Science 2018-05-17 Hyeongwoo Kim , Michael Zollhöfer , Ayush Tewari , Justus Thies , Christian Richardt , Christian Theobalt

Portrait harmonization aims to composite a subject into a new background, adjusting its lighting and color to ensure harmony with the background scene. Existing harmonization techniques often only focus on adjusting the global color and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Mengwei Ren , Wei Xiong , Jae Shin Yoon , Zhixin Shu , Jianming Zhang , HyunJoon Jung , Guido Gerig , He Zhang

Despite recent success on 2D human pose estimation, 3D human pose estimation still remains an open problem. A key challenge is the ill-posed depth ambiguity nature. This paper presents a novel intermediate feature representation named…

Computer Vision and Pattern Recognition · Computer Science 2017-11-30 Qingfu Wan , Wei Zhang , Xiangyang Xue

Image representations, from SIFT and Bag of Visual Words to Convolutional Neural Networks (CNNs), are a crucial component of almost any image understanding system. Nevertheless, our understanding of them remains limited. In this paper we…

Computer Vision and Pattern Recognition · Computer Science 2014-12-02 Aravindh Mahendran , Andrea Vedaldi

Image harmonization aims at adjusting the appearance of the foreground to make it more compatible with the background. Without exploring background illumination and its effects on the foreground elements, existing works are incapable of…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Zhongyun Hu , Ntumba Elie Nsampi , Xue Wang , Qing Wang

The task of recalibrating the illumination settings in an image to a target configuration is known as relighting. Relighting techniques have potential applications in digital photography, gaming industry and in augmented reality. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-09-16 Densen Puthussery , Hrishikesh P. S. , Melvin Kuriakose , Jiji C.

We propose a novel Retinex image-decomposition network that can be trained in a self-supervised manner. The Retinex image-decomposition aims to decompose an image into illumination-invariant and illumination-variant components, referred to…

Image and Video Processing · Electrical Eng. & Systems 2021-02-09 Kouki Seo , Yuma Kinoshita , Hitoshi Kiya

Human mesh reconstruction from a single image is challenging in the presence of occlusion, which can be caused by self, objects, or other humans. Existing methods either fail to separate human features accurately or lack proper supervision…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Yanjun Wang , Qingping Sun , Wenjia Wang , Jun Ling , Zhongang Cai , Rong Xie , Li Song

In this paper, we revisit the problem of 3D human modeling from two orthogonal silhouettes of individuals (i.e., front and side views). Different from our prior work, a supervised learning approach based on convolutional neural network…

Computer Vision and Pattern Recognition · Computer Science 2023-02-14 Bin Liu , Xiuping Liu , Zhixin Yang , Charlie C. L. Wang

Although human pose estimation for various computer vision (CV) applications has been studied extensively in the last few decades, yet in-bed pose estimation using camera-based vision methods has been ignored by the CV community because it…

Computer Vision and Pattern Recognition · Computer Science 2019-06-06 Shuangjun Liu , Yu Yin , Sarah Ostadabbas
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