Vision for Robust Robot Manipulation

Advances in Robotics are leading to a new generation of assistant robots working in ordinary, domestic settings. This evolution raises new challenges in the tasks to be accomplished by the robots. This is the case for object manipulation where the detect-approach-grasp loop requires a robust recover...

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المؤلفون الرئيسيون: Ester Martinez-Martin, Angel P. del Pobil
التنسيق: مقال
اللغة:English
منشور في: MDPI AG 2019-04-01
سلاسل:Sensors
الموضوعات:
الوصول للمادة أونلاين:https://www.mdpi.com/1424-8220/19/7/1648
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author Ester Martinez-Martin
Angel P. del Pobil
author_facet Ester Martinez-Martin
Angel P. del Pobil
author_sort Ester Martinez-Martin
collection DOAJ
description Advances in Robotics are leading to a new generation of assistant robots working in ordinary, domestic settings. This evolution raises new challenges in the tasks to be accomplished by the robots. This is the case for object manipulation where the detect-approach-grasp loop requires a robust recovery stage, especially when the held object slides. Several proprioceptive sensors have been developed in the last decades, such as tactile sensors or contact switches, that can be used for that purpose; nevertheless, their implementation may considerably restrict the gripper’s flexibility and functionality, increasing their cost and complexity. Alternatively, vision can be used since it is an undoubtedly rich source of information, and in particular, depth vision sensors. We present an approach based on depth cameras to robustly evaluate the manipulation success, continuously reporting about any object loss and, consequently, allowing it to robustly recover from this situation. For that, a Lab-colour segmentation allows the robot to identify potential robot manipulators in the image. Then, the depth information is used to detect any edge resulting from two-object contact. The combination of those techniques allows the robot to accurately detect the presence or absence of contact points between the robot manipulator and a held object. An experimental evaluation in realistic indoor environments supports our approach.
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spelling doaj.art-8f71a7570a2743d998e26913d901b5bc2022-12-22T03:10:36ZengMDPI AGSensors1424-82202019-04-01197164810.3390/s19071648s19071648Vision for Robust Robot ManipulationEster Martinez-Martin0Angel P. del Pobil1RoViT, University of Alicante, 03690 San Vicente del Raspeig (Alicante), SpainRobInLab, Jaume I University, 12071 Castello de la Plana, SpainAdvances in Robotics are leading to a new generation of assistant robots working in ordinary, domestic settings. This evolution raises new challenges in the tasks to be accomplished by the robots. This is the case for object manipulation where the detect-approach-grasp loop requires a robust recovery stage, especially when the held object slides. Several proprioceptive sensors have been developed in the last decades, such as tactile sensors or contact switches, that can be used for that purpose; nevertheless, their implementation may considerably restrict the gripper’s flexibility and functionality, increasing their cost and complexity. Alternatively, vision can be used since it is an undoubtedly rich source of information, and in particular, depth vision sensors. We present an approach based on depth cameras to robustly evaluate the manipulation success, continuously reporting about any object loss and, consequently, allowing it to robustly recover from this situation. For that, a Lab-colour segmentation allows the robot to identify potential robot manipulators in the image. Then, the depth information is used to detect any edge resulting from two-object contact. The combination of those techniques allows the robot to accurately detect the presence or absence of contact points between the robot manipulator and a held object. An experimental evaluation in realistic indoor environments supports our approach.https://www.mdpi.com/1424-8220/19/7/1648roboticsrobot manipulationdepth vision
spellingShingle Ester Martinez-Martin
Angel P. del Pobil
Vision for Robust Robot Manipulation
Sensors
robotics
robot manipulation
depth vision
title Vision for Robust Robot Manipulation
title_full Vision for Robust Robot Manipulation
title_fullStr Vision for Robust Robot Manipulation
title_full_unstemmed Vision for Robust Robot Manipulation
title_short Vision for Robust Robot Manipulation
title_sort vision for robust robot manipulation
topic robotics
robot manipulation
depth vision
url https://www.mdpi.com/1424-8220/19/7/1648
work_keys_str_mv AT estermartinezmartin visionforrobustrobotmanipulation
AT angelpdelpobil visionforrobustrobotmanipulation