Implicit representation priors meet Riemannian geometry for Bayesian
robotic grasping
- URL: http://arxiv.org/abs/2304.08805v2
- Date: Wed, 19 Apr 2023 07:50:24 GMT
- Title: Implicit representation priors meet Riemannian geometry for Bayesian
robotic grasping
- Authors: Norman Marlier, Julien Gustin, Olivier Br\"uls, Gilles Louppe
- Abstract summary: In this study, we explore the use of implicit representations to construct scene-dependent priors.
Results from both simulation and physical benchmarks showcase the high success rate and promising potential of this approach.
- Score: 5.533353383316288
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Robotic grasping in highly noisy environments presents complex challenges,
especially with limited prior knowledge about the scene. In particular,
identifying good grasping poses with Bayesian inference becomes difficult due
to two reasons: i) generating data from uninformative priors proves to be
inefficient, and ii) the posterior often entails a complex distribution defined
on a Riemannian manifold. In this study, we explore the use of implicit
representations to construct scene-dependent priors, thereby enabling the
application of efficient simulation-based Bayesian inference algorithms for
determining successful grasp poses in unstructured environments. Results from
both simulation and physical benchmarks showcase the high success rate and
promising potential of this approach.
Related papers
- Diffusion posterior sampling for simulation-based inference in tall data settings [53.17563688225137]
Simulation-based inference ( SBI) is capable of approximating the posterior distribution that relates input parameters to a given observation.
In this work, we consider a tall data extension in which multiple observations are available to better infer the parameters of the model.
We compare our method to recently proposed competing approaches on various numerical experiments and demonstrate its superiority in terms of numerical stability and computational cost.
arXiv Detail & Related papers (2024-04-11T09:23:36Z) - Simulation-based Bayesian inference for robotic grasping [6.218934678555297]
General robotic grippers are challenging to control because of their rich nonsmooth contact dynamics and the many sources of uncertainties due to the environment or sensor noise.
In this work, we demonstrate how to compute 6-DoF grasp poses using simulation-based Bayesian inference.
arXiv Detail & Related papers (2023-03-10T11:56:56Z) - Inference and Sampling for Archimax Copulas [29.864637081333097]
Archimax copulas are a family of distributions endowed with a precise representation that allows simultaneous modeling of the bulk and the tails of a distribution.
We build on the representation of Archimax copulas and develop a non-parametric inference method and sampling algorithm.
We experimentally compare to state-of-the-art density modeling techniques, and the results suggest that the proposed method effectively extrapolates to the tails while scaling to higher dimensional data.
arXiv Detail & Related papers (2022-05-27T14:55:40Z) - Assembly Planning from Observations under Physical Constraints [65.83676649042623]
The proposed algorithm uses a simple combination of physical stability constraints, convex optimization and Monte Carlo tree search to plan assemblies.
It is efficient and, most importantly, robust to the errors in object detection and pose estimation unavoidable in any real robotic system.
arXiv Detail & Related papers (2022-04-20T16:51:07Z) - Deep Equilibrium Assisted Block Sparse Coding of Inter-dependent
Signals: Application to Hyperspectral Imaging [71.57324258813675]
A dataset of inter-dependent signals is defined as a matrix whose columns demonstrate strong dependencies.
A neural network is employed to act as structure prior and reveal the underlying signal interdependencies.
Deep unrolling and Deep equilibrium based algorithms are developed, forming highly interpretable and concise deep-learning-based architectures.
arXiv Detail & Related papers (2022-03-29T21:00:39Z) - Robust Bayesian Inference for Simulator-based Models via the MMD
Posterior Bootstrap [13.448658162594604]
We propose a novel algorithm based on the posterior bootstrap and maximum mean discrepancy estimators.
This leads to a highly-parallelisable Bayesian inference algorithm with strong properties.
The approach is then assessed on a range of examples including a g-and-k distribution and a toggle-switch model.
arXiv Detail & Related papers (2022-02-09T22:12:19Z) - Simulation-based Bayesian inference for multi-fingered robotic grasping [6.677646909984405]
Multi-fingered robotic grasping is an undeniable stepping stone to universal picking and dexterous manipulation.
Yet, multi-fingered grippers remain challenging to control because of their rich nonsmooth contact dynamics or because of noise.
We propose a novel simulation-based approach for full Bayesian inference based on a deep neural network surrogate of the likelihood-to-evidence ratio.
arXiv Detail & Related papers (2021-09-29T08:44:36Z) - Pathwise Conditioning of Gaussian Processes [72.61885354624604]
Conventional approaches for simulating Gaussian process posteriors view samples as draws from marginal distributions of process values at finite sets of input locations.
This distribution-centric characterization leads to generative strategies that scale cubically in the size of the desired random vector.
We show how this pathwise interpretation of conditioning gives rise to a general family of approximations that lend themselves to efficiently sampling Gaussian process posteriors.
arXiv Detail & Related papers (2020-11-08T17:09:37Z) - Supporting Optimal Phase Space Reconstructions Using Neural Network
Architecture for Time Series Modeling [68.8204255655161]
We propose an artificial neural network with a mechanism to implicitly learn the phase spaces properties.
Our approach is either as competitive as or better than most state-of-the-art strategies.
arXiv Detail & Related papers (2020-06-19T21:04:47Z) - Efficiently Sampling Functions from Gaussian Process Posteriors [76.94808614373609]
We propose an easy-to-use and general-purpose approach for fast posterior sampling.
We demonstrate how decoupled sample paths accurately represent Gaussian process posteriors at a fraction of the usual cost.
arXiv Detail & Related papers (2020-02-21T14:03:16Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.