Geometric Control of a Constrained System

2021 ◽  
Author(s):  
Hadi Hajieghrary
Keyword(s):  
Geometric Control ◽  
Constrained System

Autonomous Satellite Rendezvous and Proximity Operations via Geometric Control Methods

2021 ◽  
Author(s):  
Alexander A. Soderlund ◽  
Sean Phillips ◽  
Anonto Zaman ◽  
Christopher D. Petersen
Keyword(s):  
Geometric Control ◽  
Control Methods ◽  
Proximity Operations

scholarly journals Quantum annealing in a kinetically constrained system

2005 ◽  
Vol 72 (2) ◽  
Author(s):  
Arnab Das ◽  
Bikas K. Chakrabarti ◽  
Robin B. Stinchcombe
Keyword(s):  
Quantum Annealing ◽  
Constrained System

scholarly journals Orientation-Constrained System for Lamp Detection in Buildings Based on Computer Vision

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1516 ◽  
Author(s):  
Francisco Troncoso-Pastoriza ◽  
Pablo Eguía-Oller ◽  
Rebeca Díaz-Redondo ◽  
Enrique Granada-Álvarez ◽  
Aitor Erkoreka
Keyword(s):  
Computer Vision ◽  
Optimization Methods ◽  
Geometric Information ◽  
Constrained System ◽  
Building Information Modelling ◽  
Correct Model ◽  
Reprojection Error ◽  
Localization Errors ◽  
Building Information ◽  
Error Filtering

Computer vision is used in this work to detect lighting elements in buildings with the goal of improving the accuracy of previous methods to provide a precise inventory of the location and state of lamps. Using the framework developed in our previous works, we introduce two new modifications to enhance the system: first, a constraint on the orientation of the detected poses in the optimization methods for both the initial and the refined estimates based on the geometric information of the building information modelling (BIM) model; second, an additional reprojection error filtering step to discard the erroneous poses introduced with the orientation restrictions, keeping the identification and localization errors low while greatly increasing the number of detections. These enhancements are tested in five different case studies with more than 30,000 images, with results showing improvements in the number of detections, the percentage of correct model and state identifications, and the distance between detections and reference positions.

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