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Proceedings Paper

In-line print defect inspection system based on parallelized algorithms
Author(s): Chao Lv; Hongjun Zhou
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Paper Abstract

The core algorithm of an on-line print defects detection system is template matching. In this paper, we introduce a kind of edge-based template matching based on Canny’s edge detection method to find the edge information and do the matching work. Of all the detection algorithms, the most difficult problem is execution time, in order to reduce the execution time and improve the efficiency of execution, we introduce four different ways to solve and compare. They are Pyramidal algorithm, Multicore and Multi-Threading algorithm based on OpenMP, a Parallel algorithm based on Intel AVX Instruction Set, GPU computing based on OpenCL model. Through the results, we can find different characters of different ways, and then choose the best for your own system.

Paper Details

Date Published: 4 March 2015
PDF: 6 pages
Proc. SPIE 9521, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part I, 952108 (4 March 2015); doi: 10.1117/12.2087231
Show Author Affiliations
Chao Lv, Tongji Univ. (China)
Hongjun Zhou, Tongji Univ. (China)


Published in SPIE Proceedings Vol. 9521:
Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part I
Xun Hou; Zhihong Wang; Lingan Wu; Jing Ma, Editor(s)

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