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For active optical imaging, the use of single-photon detectors can greatly improve the detection sensitivity of the system. However, the traditional maximum-likelihood based imaging method needs a long acquisition time to capture clear…

In this paper, we introduce a method for estimating blind spots for sensor setups of autonomous or automated vehicles and/or robotics applications. In comparison to previous methods that rely on geometric approximations, our presented…

Robotics · Computer Science 2024-02-15 Marc Uecker , J. Marius Zöllner

The goal of this paper is to estimate the viewpoint for a novel object. Standard viewpoint estimation approaches generally fail on this task due to their reliance on a 3D model for alignment or large amounts of class-specific training data…

Computer Vision and Pattern Recognition · Computer Science 2020-06-08 Mohamed El Banani , Jason J. Corso , David F. Fouhey

Accurately calibrating light field camera is essential to its applications. Rapid progress has been made in this area in the past decades. In this paper, detailed analysis was first performed towards the state of the art projection models…

Computer Vision and Pattern Recognition · Computer Science 2021-03-11 Dongyang Jin , Saiping Zhang , Xiao Huo , Wei Zhang , Fuzheng Yang

Visual information, captured for example by cameras, can effectively reflect the sizes and locations of the environmental scattering objects, and thereby can be used to infer communications parameters like propagation directions, receiver…

Signal Processing · Electrical Eng. & Systems 2022-07-26 Weihua Xu , Feifei Gao , Xiaoming Tao , Jianhua Zhang , Ahmed Alkhateeb

A simple method of constructing the 3D surface of non-transparent micro-objects by extending the depth-of-field on the whole attainable surface is presented. The series of images of a sample are recorded by the sequential movement of the…

Instrumentation and Detectors · Physics 2009-04-15 V. V. Berejnov

We present a novel method to infer, in closed-form, a general 3D spatial occupancy and orientation of a collection of rigid objects given 2D image detections from a sequence of images. In particular, starting from 2D ellipses fitted to…

Computer Vision and Pattern Recognition · Computer Science 2015-07-21 Cosimo Rubino , Marco Crocco , Alessandro Perina , Vittorio Murino , Alessio Del Bue

This work proposes a process for efficiently training a point-wise object detector that enables localizing objects and computing their 6D poses in cluttered and occluded scenes. Accurate pose estimation is typically a requirement for robust…

Computer Vision and Pattern Recognition · Computer Science 2019-02-22 Jean-Philippe Mercier , Chaitanya Mitash , Philippe Giguère , Abdeslam Boularias

We present a superpixel method for full spatial phase and amplitude control of a light beam using a digital micromirror device (DMD) combined with a spatial filter. We combine square regions of nearby micromirrors into superpixels by low…

Optics · Physics 2015-06-19 Sebastianus A. Goorden , Jacopo Bertolotti , Allard P. Mosk

In this paper, we propose an iterative self-training framework for sim-to-real 6D object pose estimation to facilitate cost-effective robotic grasping. Given a bin-picking scenario, we establish a photo-realistic simulator to synthesize…

Robotics · Computer Science 2022-07-22 Kai Chen , Rui Cao , Stephen James , Yichuan Li , Yun-Hui Liu , Pieter Abbeel , Qi Dou

In this article we purpose a novel method for planar pose estimation of mobile robots. This method is based on an analytic solution (which we derived) for the projection of 3D straight lines, onto the mirror of Non-Central Catadioptric…

Robotics · Computer Science 2016-07-11 Andre Mateus , Pedro Miraldo , Pedro U. Lima

Current deep models provide remarkable object detection in terms of object classification and localization. However, estimating object rotation with respect to other visual objects in the visual context of an input image still lacks deep…

Computer Vision and Pattern Recognition · Computer Science 2023-03-02 Saghir Alfasly , Zaid Al-huda , Saifullah Bello , Ahmed Elazab , Jian Lu , Chen Xu

To navigate in an environment safely and autonomously, robots must accurately estimate where obstacles are and how they move. Instead of using expensive traditional 3D sensors, we explore the use of a much cheaper, faster, and higher…

Robotics · Computer Science 2023-05-30 Siddharth Ancha , Gaurav Pathak , Ji Zhang , Srinivasa Narasimhan , David Held

Real-time object pose estimation is necessary for many robot manipulation algorithms. However, state-of-the-art methods for object pose estimation are trained for a specific set of objects; these methods thus need to be retrained to…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Qiao Gu , Brian Okorn , David Held

The existing techniques for measuring high-dimensional pure states of light in the orbital angular momentum (OAM) basis either involve a large number of single-pixel data acquisitions and substantial postselection errors that increase with…

Optics · Physics 2020-05-11 Girish Kulkarni , Suman Karan , Anand K. Jha

We present a framework for evaluating 6-DoF instance-level object pose estimators, focusing on those that require a single RGB (not RGB-D) image as input. Besides gaining intuition about how accurate these estimators are, we are interested…

Robotics · Computer Science 2025-12-03 Eric C. Joyce , Qianwen Zhao , Nathaniel Burgdorfer , Long Wang , Philippos Mordohai

The accuracy of monocular 3D human pose estimation depends on the viewpoint from which the image is captured. While freely moving cameras, such as on drones, provide control over this viewpoint, automatically positioning them at the…

Computer Vision and Pattern Recognition · Computer Science 2020-06-19 Sena Kiciroglu , Helge Rhodin , Sudipta N. Sinha , Mathieu Salzmann , Pascal Fua

We present a method for the real-time estimation of the full 3D pose of one or more human hands using a single commodity RGB camera. Recent work in the area has displayed impressive progress using RGBD input. However, since the introduction…

Computer Vision and Pattern Recognition · Computer Science 2017-12-12 Paschalis Panteleris , Iason Oikonomidis , Antonis Argyros

Understanding the geometry and pose of objects in 2D images is a fundamental necessity for a wide range of real world applications. Driven by deep neural networks, recent methods have brought significant improvements to object pose…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Jogendra Nath Kundu , Rahul M. V. , Aditya Ganeshan , R. Venkatesh Babu

Unmanned vehicles often need to locate targets with high precision during work. In the unmanned material handling workshop, the unmanned vehicle needs to perform high-precision pose estimation of the workpiece to accurately grasp the…

Computer Vision and Pattern Recognition · Computer Science 2020-09-18 Xianqi He , Zirui Li , Xufeng Yin , Jianwei Gong , Cheng Gong