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Retrieving 3D models from 2D human sketches has received considerable attention in the areas of graphics, image retrieval, and computer vision. Almost always in state of the art approaches a large amount of "best views" are computed for 3D…

Computer Vision and Pattern Recognition · Computer Science 2015-04-15 Fang Wang , Le Kang , Yi Li

3D scan geometry and CAD models often contain complementary information towards understanding environments, which could be leveraged through establishing a mapping between the two domains. However, this is a challenging task due to strong,…

Computer Vision and Pattern Recognition · Computer Science 2019-08-21 Manuel Dahnert , Angela Dai , Leonidas Guibas , Matthias Nießner

Thinning is the removal of contour pixels/points of connected components in an image to produce their skeleton with retained connectivity and structural properties. The output requirements of a thinning procedure often vary with…

Computer Vision and Pattern Recognition · Computer Science 2017-11-20 Himanshu Jain , Archana Praveen Kumar

We present a novel embedding approach for video instance segmentation. Our method learns a spatio-temporal embedding integrating cues from appearance, motion, and geometry; a 3D causal convolutional network models motion, and a monocular…

Computer Vision and Pattern Recognition · Computer Science 2019-12-20 Anthony Hu , Alex Kendall , Roberto Cipolla

Existing methods for instance segmentation in videos typically involve multi-stage pipelines that follow the tracking-by-detection paradigm and model a video clip as a sequence of images. Multiple networks are used to detect objects in…

Computer Vision and Pattern Recognition · Computer Science 2023-09-04 Ali Athar , Sabarinath Mahadevan , Aljoša Ošep , Laura Leal-Taixé , Bastian Leibe

We present a novel adaptive machine-learning based approach for reconstructing three-dimensional (3D) crystals from coherent diffraction imaging (CDI). We represent the crystals using spherical harmonics (SH) and generate corresponding…

Computational Physics · Physics 2020-12-02 Alexander Scheinker , Reeju Pokharel

We propose a novel approach to jointly perform 3D shape retrieval and pose estimation from monocular images.In order to make the method robust to real-world image variations, e.g. complex textures and backgrounds, we learn an embedding…

Computer Vision and Pattern Recognition · Computer Science 2019-03-28 Kyaw Zaw Lin , Weipeng Xu , Qianru Sun , Christian Theobalt , Tat-Seng Chua

This paper presents an end-to-end convolutional neural network (CNN) for 2D-3D exemplar detection. We demonstrate that the ability to adapt the features of natural images to better align with those of CAD rendered views is critical to the…

Computer Vision and Pattern Recognition · Computer Science 2016-04-19 Francisco Massa , Bryan Russell , Mathieu Aubry

When using Convolutional Neural Networks (CNNs) for segmentation of organs and lesions in medical images, the conventional approach is to work with inputs and outputs either as single slice (2D) or whole volumes (3D). One common…

Image and Video Processing · Electrical Eng. & Systems 2020-11-17 Minh H. Vu , Guus Grimbergen , Tufve Nyholm , Tommy Löfstedt

Monocular depth estimation is vital for scene understanding and downstream tasks. We focus on the supervised setup, in which ground-truth depth is available only at training time. Based on knowledge about the high regularity of real 3D…

Computer Vision and Pattern Recognition · Computer Science 2022-04-06 Vaishakh Patil , Christos Sakaridis , Alexander Liniger , Luc Van Gool

3D reconstruction from a single RGB image is a challenging problem in computer vision. Previous methods are usually solely data-driven, which lead to inaccurate 3D shape recovery and limited generalization capability. In this work, we focus…

Computer Vision and Pattern Recognition · Computer Science 2020-06-18 Yichao Zhou , Shichen Liu , Yi Ma

We present a novel framework named PlaneMVS for 3D plane reconstruction from multiple input views with known camera poses. Most previous learning-based plane reconstruction methods reconstruct 3D planes from single images, which highly rely…

Computer Vision and Pattern Recognition · Computer Science 2024-06-07 Jiachen Liu , Pan Ji , Nitin Bansal , Changjiang Cai , Qingan Yan , Xiaolei Huang , Yi Xu

3D image segmentation plays an important role in biomedical image analysis. Many 2D and 3D deep learning models have achieved state-of-the-art segmentation performance on 3D biomedical image datasets. Yet, 2D and 3D models have their own…

Computer Vision and Pattern Recognition · Computer Science 2018-12-11 Hao Zheng , Yizhe Zhang , Lin Yang , Peixian Liang , Zhuo Zhao , Chaoli Wang , Danny Z. Chen

We propose a supervised machine learning approach for boosting existing signal and image recovery methods and demonstrate its efficacy on example of image reconstruction in computed tomography. Our technique is based on a local nonlinear…

Computer Vision and Pattern Recognition · Computer Science 2013-12-02 Joseph Shtok , Michael Zibulevsky , Michael Elad

Automated three-dimensional (3D) object reconstruction is the task of building a geometric representation of a physical object by means of sensing its surface. Even though new single view reconstruction techniques can predict the surface,…

Computer Vision and Pattern Recognition · Computer Science 2021-01-27 J. Irving Vasquez-Gomez , David Troncoso , Israel Becerra , Enrique Sucar , Rafael Murrieta-Cid

Detecting and identifying objects in satellite images is a very challenging task: objects of interest are often very small and features can be difficult to recognize even using very high resolution imagery. For most applications, this…

Computer Vision and Pattern Recognition · Computer Science 2020-05-28 Damien Grosgeorge , Maxime Arbelot , Alex Goupilleau , Tugdual Ceillier , Renaud Allioux

This paper studies the problem of 3D volumetric reconstruction from two views of a scene with an unknown camera. While seemingly easy for humans, this problem poses many challenges for computers since it requires simultaneously…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Shengyi Qian , Linyi Jin , David F. Fouhey

Convolutional neural networks (CNNs) have demonstrated their superiority in numerous computer vision tasks, yet their computational cost results prohibitive for many real-time applications such as pedestrian detection which is usually…

Computer Vision and Pattern Recognition · Computer Science 2018-01-03 Farzin Ghorban , Javier Marín , Yu Su , Alessandro Colombo , Anton Kummert

Typical convolutional neural networks (CNNs) have several millions of parameters and require a large amount of annotated data to train them. In medical applications where training data is hard to come by, these sophisticated machine…

Computer Vision and Pattern Recognition · Computer Science 2016-12-09 Rahul Venkataramani , Sheshadri Thiruvenkadam , Prasad Sudhakar , Hariharan Ravishankar , Vivek Vaidya

Single particle imaging (SPI) at X-ray free electron lasers (XFELs) is particularly well suited to determine the 3D structure of particles in their native environment. For a successful reconstruction, diffraction patterns originating from a…

Data Analysis, Statistics and Probability · Physics 2021-12-17 Dameli Assalauova , Alexandr Ignatenko , Fabian Isensee , Sergey Bobkov , Darya Trofimova , Ivan A. Vartanyants
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