Tag Archives: Robotics

3D Rotations using Rodrigues Rotation Formula

The problem we are addressing here is the rotation of a general 3D vector about a given axis of rotation denoted by by radians. The Rodrigues Rotation Formula is as follows: Example: for a sanity check we can consider that … Continue reading

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Quaternions – How to generate and operate them in Python?

Python Package There are several python libraries (modules) that you can install. Here, I am going to use pyquaternion Installation This package can be installed as follows pip install pyquaternion Usage After installing the package, use it as follows:  Forming … Continue reading

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Importance Sampling – A Tutorial

Problem: Compute an expectation over a probability density function , given only samples generated from a different probability density function . We call and the target distribution and proposal distribution respectively. Solution: Draw samples from Calculate the probability of each … Continue reading

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arXiv.org 18-10-2017

Robotics on arXiv.org Submissions on 18-10-2017 [1]  arXiv:1710.06425 [pdf, other] link Title: Domain Randomization and Generative Models for Robotic Grasping Authors: Joshua Tobin, Wojciech Zaremba, Pieter Abbeel Subjects: Robotics (cs.RO); Learning (cs.LG) [2]  arXiv:1710.06280 [pdf, other] link Title: Interactively Picking … Continue reading

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Slerp: Spherical linear interpolation in quaternion space

in my previous post, I explained the simple Lerp method for calculating linear interpolation in the quaternion space. I also mentioned that while normalizing the output could help to get an optimized result, the velocity curve is not constant. To … Continue reading

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Robotics on arXiv 7/18/2017

Robotics on arXiv.org Submissions on 18-07-2017 [1]  arXiv:1707.05303 [pdf, other] link Title: Aggressive Deep Driving: Model Predictive Control with a CNN Cost Model Authors: Paul Drews, Grady Williams, Brian Goldfain, Evangelos A. Theodorou, James M. Rehg Comments: 11 pages, 7 … Continue reading

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Robotics on arXiv – 6/July/2017

Robotics on arXiv.org Submissions on 06-07-2017 [1]  arXiv:1707.01152 [pdf, other] link Title: Improving Foot-Mounted Inertial Navigation Through Real-Time Motion Classification Authors: Brandon Wagstaff, Valentin Peretroukhin, Jonathan Kelly Comments: To appear in proceedings of 2017 International Conference on Indoor Positioning an … Continue reading

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Robotics on arXiv.org 5/July/2017

Robotics on arXiv.org Submissions on 05-07-2017 [1]  arXiv:1707.00893 [pdf, other] link Title: Optimization Beyond the Convolution: Generalizing Spatial Relations with End-to-End Metric Learning Authors: Philipp Jund, Andreas Eitel, Nichola Abdo, Wolfram Burgard Comments: Submitted to CoRL 2017. Supplementary Video: this … Continue reading

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Robotics on arXiv – 7/4/2017

Robotics on arXiv.org Submissions on 04-07-2017 [1]  arXiv:1707.00484 [pdf, other] link Title: A Projected Inverse Dynamics Approach for Dual-arm Cartesian Impedance Control Authors: Hsiu-Chin Lin, Joshua Smith, Keyhan Kouhkiloui Babarahmati, Niels Dehio, Michael Mistry Comments: Under review Subjects: Robotics (cs.RO) … Continue reading

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Robotics on arXiv.org Submissions on 30-06-2017 [1]  arXiv:1706.09829 [pdf, other] link Title: Towards Monocular Vision based Obstacle Avoidance through Deep Reinforcement Learning Authors: Linhai Xie, Sen Wang, Andrew Markham, Niki Trigoni Comments: Accepted by RSS 2017 workshop New Frontiers for … Continue reading

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