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A Study on the Automatic Inspection System using Invariant Moments Algorithm with the Change of Size and Rotation  

Lee, Yong-Joong (창원기능대학 생산자동화과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.13, no.3, 2004 , pp. 37-43 More about this Journal
Abstract
The purpose of this study is to develop a practical image inspection system that could recognize it correctly, endowing flexibility to the productive field, although the same object for work will be changed in the size and rotated. In this experiment, it selected a fighter, rotating the direction from $30^{\circ}$ to $45^{\circ}$ simultaneously while changing the size from 1/4 to 1/16, as an object inspection without using another hardware for exclusive image processing. The invariant moments, Hu has suggested, was used as feature vector moment descriptor. As a result of the experiment, the image inspection system developed from this research was operated in real-time regardless of the chance of size and rotation for the object inspection, and it maintained the correspondent rates steadily above from 94% to 96%. Accordingly, it is considered as the flexibility can be considerably endowed to the factory automation when the image inspection system developed from this research is applied to the productive field.
Keywords
Image Inspection System; Invariant Moments; Factory Automation; Productive Field; Moment Descriptor;
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