Title
Depth Image-Based Deep Learning of Grasp Planning for Textureless Planar-Faced Objects in Vision-Guided Robotic Bin-Picking.
Abstract
Bin-picking of small parcels and other textureless planar-faced objects is a common task at warehouses. A general color image-based vision-guided robot picking system requires feature extraction and goal image preparation of various objects. However, feature extraction for goal image matching is difficult for textureless objects. Further, prior preparation of huge numbers of goal images is impractical at a warehouse. In this paper, we propose a novel depth image-based vision-guided robot bin-picking system for textureless planar-faced objects. Our method uses a deep convolutional neural network (DCNN) model that is trained on 15,000 annotated depth images synthetically generated in a physics simulator to directly predict grasp points without object segmentation. Unlike previous studies that predicted grasp points for a robot suction hand with only one vacuum cup, our DCNN also predicts optimal grasp patterns for a hand with two vacuum cups (left cup on, right cup on, or both cups on). Further, we propose a surface feature descriptor to extract surface features (center position and normal) and refine the predicted grasp point position, removing the need for texture features for vision-guided robot control and sim-to-real modification for DCNN model training. Experimental results demonstrate the efficiency of our system, namely that a robot with 7 degrees of freedom can pick randomly posed textureless boxes in a cluttered environment with a 97.5% success rate at speeds exceeding 1000 pieces per hour.
Year
DOI
Venue
2020
10.3390/s20030706
SENSORS
Keywords
Field
DocType
deep learning,bin picking,grasp planning,textureless,visual servoing
Computer vision,Robot control,GRASP,Convolutional neural network,Electronic engineering,Feature extraction,Visual servoing,Artificial intelligence,Deep learning,Engineering,Robot,Color image
Journal
Volume
Issue
ISSN
20
3.0
1424-8220
Citations 
PageRank 
References 
1
0.36
0
Authors
7
Name
Order
Citations
PageRank
Ping Jiang110.36
Yoshiyuki Ishihara210.36
Nobukatsu Sugiyama310.36
Junji Oaki410.36
Seiji Tokura510.36
Atsushi Sugahara622.44
Akihito Ogawa722.09