Tuan-Tang Le

Mr. Tuan-Tang Le

orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 August 2019 in Sensors
Verified
Journal Article
Open access
PDF file
TLTuan-Tang Le
Tuan-Tang Le
CLChyi-Yeu Lin
Chyi-Yeu Lin
Random bin-picking is a prominent, useful, and challenging industrial robotics application. However, many industrial and real-world objects are planar and have oriented surface points that are not sufficiently compact and discriminative for those methods using geometry information, especially depth discontinuities. This study solves the above-mentioned problems by proposing a novel and robust solution for random bin-picking for planar objects in a cluttered environment. Different from other research that has mainly focused on 3D information, this study first applies an instance segmentation-based deep learning approach using 2D image data for classifying and localizing the target object while generating a mask for each instance. The presented approach, moreover, serves as a pioneering method to extract 3D point cloud data based on 2D pixel values for building the appropriate coordinate system on the planar object plane. The experimental results showed that the proposed method reached an accuracy rate of 100% for classifying two-sided objects in the unseen dataset, and 3D appropriate pose prediction was highly effective, with average translation and rotation errors less than 0.23 cm and 2.26°, respectively. Finally, the system success rate for picking up objects was over 99% at an average processing time of 0.9 s per step, fast enough for continuous robotic operation without interruption. This showed a promising higher successful pickup rate compared to previous approaches to random bin-picking problems. Successful implementation of the proposed approach for USB packs provides a solid basis for other planar objects in a cluttered environment. With remarkable precision and efficiency, this study shows significant commercialization potential.

1 July 2021 in Robotics and Autonomous Systems
Verified
Journal Article
Closed access
TLTuan-Tang Le
Tuan-Tang Le
Trung-Son LeTrung-Son Le
Trung-Son Le
YCYu-Ru Chen
Yu-Ru Chen
JVJoel Vidal
Joel Vidal
CLChyi-Yeu Lin
Chyi-Yeu Lin

1 October 2019
Verified
Conference Paper
Closed access
EPEduardo Jr Piedad
Eduardo Jr Piedad
TLTuan-Tang Le
Tuan-Tang Le
KAKimberly Aying
Kimberly Aying
FPFhenyl Kristel Pama
Fhenyl Kristel Pama
ITIanny Tabale
Ianny Tabale
Traffic congestion is an undesirable problem for big cities especially in third world countries. Better policy planning and decision-making from the authority comes from well-conducted practical research. In this study, a Vehicle Count System (VCS) using deep learning Mask R-CNN is developed to classify and count vehicles passing in a target street. A novel time interval image capture (TIIC) system is employed to the VCS instead of the typical real-time video streaming to avoid big data storage cost. To determine the effectiveness of the developed VCS, its output is compared to that of conventional method from manual recording of the passing vehicles. Four vehicle types – cars, motorbikes, trucks and buses are present in the 1800 real traffic images gathered from an actual field. As an initial stage, the developed tool performs satisfactorily in classifying and counting car-type vehicle with 97.62% accuracy in a 10-hour testing. However, it fails to recognize motorbikes probably due to its relatively smaller pixel size compared to other vehicle types. The presence of jeeps confused the VCS. The real image dataset can be used as basis for further development. The newly developed TIIC system can also be used in future research as a promising tool to replace real-time video streaming.