| Issue |
MATEC Web of Conferences
Volume 34, 2015
2015 2nd International Conference on Mechatronics and Mechanical Engineering (ICMME 2015)
|
|
|---|---|---|
| Article Number | 04002 | |
| Number of page(s) | 6 | |
| Section | Control theory and technology | |
| DOI | https://doi.org/10.1051/matecconf/20153404002 | |
| Published online | 11 December 2015 | |
A fast template matching method for LED chip Localization
Huazhong University of Science and Technology, China
a Corresponding author: hesongping@hust.edu.cn
Efficiency determines the profits of the semiconductor producers. So the producers spare no effort to enhance the efficiency of every procedure. The purpose of the paper is to present a method to shorten the time to locate the LED chips on wafer. The method consists of 3 steps. Firstly, image segmentation and blob analyzation are used to predict the positions of potential chips. Then predict the orientations of potential chips based on their dominant orientations. Finally, according to the positions and orientations predicted above, locate the chips precisely based on gradient orientation features. Experiments show that the algorithm is faster than the traditional method we choose to locate the LED chips. Besides, even the orientations of the chips on wafer are of big deviation to the orientation of the template, the efficiency of this method won't be affected.
© Owned by the authors, published by EDP Sciences, 2015
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