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1 – 2 of 2Ye Su, Ye Yutang, Xie Yu, Yi Maoli, Zhang Jing, Luo Ying and Du Chunlei
– This paper aims to solve the issue of target positioning in auto stiffener bonder (ASB) systems for flexible printed circuits.
Abstract
Purpose
This paper aims to solve the issue of target positioning in auto stiffener bonder (ASB) systems for flexible printed circuits.
Design/methodology/approach
The proposed approach uses Phong’s bidirectional reflectance distribution function (BRDF) model to simulate the reflection of light off a target in ASB systems to predict the current pose of the target based on image brightness, update the template, decrease the initial errors in the template and narrow down the search range.
Findings
The experimental results indicate that the proposed approach can predict the inclination angle of the target with precision, presenting angle prediction errors of less than three degrees. Furthermore, with larger inclined angles, the overall matching errors were less than 1.5 pixels. Comparisons with the unmodified matching algorithm revealed that the proposed approach resulted in 65 per cent less calculation time for the algorithm and 14 per cent higher overall work efficiency in the ASB system.
Originality/value
The edge-based perspective shape matching algorithm was modified using the Phong BRDF model and enhanced algorithm efficiency with the target pose prediction method while ensuring the precision and robustness of the system. The proposed approach has high potential value and can be expanded to recognition systems for objects with varying inclination angles and highly reflective surfaces.
Details
Keywords
UNLIKE many other journals that seem to wallow in doom and gloom, we have been saying for a long time that the recession is receding. In so saying, we are not repeating in parrot…
Abstract
UNLIKE many other journals that seem to wallow in doom and gloom, we have been saying for a long time that the recession is receding. In so saying, we are not repeating in parrot fashion the opinion of Government speakers. It is based on our own observation of the world scene.