Results 211 to 220 of about 11,876 (259)

Improving accuracy of automatic optical inspection with machine learning

Frontiers of Computer Science, 2021
Electronic devices require the printed circuit board (PCB) to support the whole structure, but the assembly of PCBs suffers from welding problem of the electronic components such as surface mounted devices (SMDs) resistors. The automated optical inspection (AOI) machine, widely used in industrial production, can take the image of PCBs and examine the ...
Xinyu Tong 0001, Ziao Yu, Xiaohua Tian, Houdong Ge, Xinbing Wang   +4 more
openaire   +1 more source

Automatic optical inspection (AOI)

40th Conference Proceedings on Electronic Components and Technology, 2002
The benefits of AOI are described, and an overview and technological tradeoffs of the AOI of the thin-film microchip module (TFMCM) are presented. It is noted that AOI has been proven to be essential in the production of electronic products such as printed circuit boards (PCBs) and photomasks. Because the structure and the production process of TF MCMs
O. Hecht, G. Dishon
openaire   +1 more source

Optical filter selection for automatic visual inspection

IEEE Winter Conference on Applications of Computer Vision, 2014
The color of a material is one of the most frequently used features in automated visual inspection systems. While this is sufficient for many “easy” tasks, mixed and organic materials usually require more complex features. Spectral signatures, especially in the near infrared range, have been proven useful in many cases.
Matthias Richter 0003, Jürgen Beyerer
openaire   +2 more sources

Automatic inspection with optical position sensors

Optics and Lasers in Engineering, 1992
Abstract The aim of this paper is to present the optical position sensors (PSD) based on a lateral photoeffect with respect to its characteristics. The optical triangulation (OT) being exploited as the sensing technique will be examined. Three experiments employing PSD and OT techniques for monitoring surface profiles in mechanical, photographic ...
F. Francini, G. Longobardi, P.K. Buah-Bassuah   +2 more
openaire   +1 more source

Automatic optical inspection system for IC molding surface

Journal of Intelligent Manufacturing, 2014
Success or failure of an IC product hinges on the quality of molding process which protects chips from the harm done by external force and moisture. Defects such as cracks, dilapidations or voids may be embedding on the molding surface while a chip was being molded. Human inspection often neglects a very tiny crack or a low-contrast void.
Ssu-Han Chen, Der-Baau Perng
openaire   +1 more source

Research of repeatable positioning accuracy of automatic optical inspection

2015 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2015
It is very important that the beginning positioning in the inspection of PCB board in automated optical inspection. The accuracy of the original position influence the later checking result of the components in the PCB board, it is crucial to do research the positioning accuracy repeatedly. There are many factors affect the position accuracy.
Hao Wu, Xiangrong Xu
openaire   +1 more source

Optical teat inspection for automatic milking systems

Computers and Electronics in Agriculture, 1995
Abstract Automatic milking systems require methods of ensuring that cows are clean before milking. This paper investigates the feasibility of a sensor to detect dirt on a teat based on the optical reflectivity of the teat. A fibre optic sensor and fast scanning monochromator were used to make a series of measurements of the visible and near infrared ...
C. Bull, T. Mottram, H. Wheeler
openaire   +1 more source

AI-based Automatic Optical Inspection of Glass Bubble Defects

Proceedings of the 2020 2nd International Conference on Management Science and Industrial Engineering, 2020
Automatic Optical Inspection (AOI) offers a range of solutions to meet the requirements of every production facility, attracting significant interest of manufacturers of various industries. One important AOI application in the glass industry is to detect bubble defects in spherical glass, especially those used for making high-end lenses.
Jing-Wein Wang, Chih-Chiang Wang 0001, Tsung-Chieh Cheng   +2 more
openaire   +1 more source

Automatic inspection technique for optical surface flaws

SPIE Proceedings, 1991
Industrial inspection of optical component surface flaws requires objective, high efficient and fast measurement methods and instruments. In this paper, a novel method, which is practical for on- line inspecting optical component surface flaws in manufacturing industry, is discribed.
GuoGuang Yang, Wenliang Gao, Shangyi Cheng   +2 more
openaire   +1 more source

An Automatic Optical Inspection System for Assembly and Evaluation of an Optical Encoder

Journal of Testing and Evaluation, 2014
Abstract This study presented an automatic optical inspection system for the assembly and evaluation of an optical encoder, and the system analyzed the output signal quality of the light transmission grating linear encoder. The reference grating was affixed to the side architecture of the detection system in order to maintain the correct
Chern-Sheng Lin, Guo-An Tzeng, Yun-Long Lay, Shiaw-Wu Chen, Chuen-Lin Tien   +4 more
openaire   +1 more source