TY - JOUR
T1 - Efficient sensory-grounded grasp pose quality mapping for gripper design and online grasp planning
AU - Eizicovits, Danny
AU - Berman, Sigal
N1 - Funding Information:
This research was funded by the European Commission in the 7th Framework Programme (CROPS GA no. 246252). The authors thank Prof. Yael Edan from Ben-Gurion University and Bart van Tuijl from Wageningen University for their valuable comments.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - The gentle grasping and manipulation of objects in dense un-structured environments, such as the agricultural, food processing, or home environments constitute a formidable challenge for robotic systems. Knowledge regarding wrist poses (wrist positions and orientations) that may lead to successful grasps is especially important in such environments for both gripper design and online grasp planning. Graspability maps store grasp quality grades at different wrist poses in object-centered coordinates. Previously graspability maps were derived based on object models in a lengthy, offline process and thus had limited usability. We have developed geometry-based grasp quality measures related to classical grasp quality measures, which can be determined directly from a 3D point cloud. This facilitates embedding agent perception capabilities within the grasp quality determination. Additionally by scanning the object's surface for finger contact points rather than scanning the volume of the bounding box about the object, and by using parallel computation, graspability map computation-time is considerably reduced, facilitating online computation of multiple measures. We validate the developed measures in a physical environment, show that computation-time can be reduced by more than 90% with very low reduction in map quality, and show the applicability of the developed methods for both simple and complex objects.
AB - The gentle grasping and manipulation of objects in dense un-structured environments, such as the agricultural, food processing, or home environments constitute a formidable challenge for robotic systems. Knowledge regarding wrist poses (wrist positions and orientations) that may lead to successful grasps is especially important in such environments for both gripper design and online grasp planning. Graspability maps store grasp quality grades at different wrist poses in object-centered coordinates. Previously graspability maps were derived based on object models in a lengthy, offline process and thus had limited usability. We have developed geometry-based grasp quality measures related to classical grasp quality measures, which can be determined directly from a 3D point cloud. This facilitates embedding agent perception capabilities within the grasp quality determination. Additionally by scanning the object's surface for finger contact points rather than scanning the volume of the bounding box about the object, and by using parallel computation, graspability map computation-time is considerably reduced, facilitating online computation of multiple measures. We validate the developed measures in a physical environment, show that computation-time can be reduced by more than 90% with very low reduction in map quality, and show the applicability of the developed methods for both simple and complex objects.
KW - Graspability map
KW - Grasping
KW - Robotic manipulators
UR - http://www.scopus.com/inward/record.url?scp=84902155940&partnerID=8YFLogxK
U2 - 10.1016/j.robot.2014.03.011
DO - 10.1016/j.robot.2014.03.011
M3 - Article
AN - SCOPUS:84902155940
SN - 0921-8890
VL - 62
SP - 1208
EP - 1219
JO - Robotics and Autonomous Systems
JF - Robotics and Autonomous Systems
IS - 8
ER -