• Title/Summary/Keyword: Bayes discriminant function

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Development of Algorithms for Sorting Peeled Garlic Using Machnie Vison (I) - Comparison of sorting accuracy between Bayes discriminant function and neural network - (기계시각을 이용한 박피 마늘 선별 알고리즘 개발 (I) - 베이즈 판별함수와 신경회로망에 의한 설별 정확도 비교 -)

  • 이상엽;이수희;노상하;배영환
    • Journal of Biosystems Engineering
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    • v.24 no.4
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    • pp.325-334
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    • 1999
  • The aim of this study was to present a groundwork for development of a sorting system of peeled garlics using machine vision. Images of various garlic samples such as sound, partially defective, discolored, rotten and un-peeled were obtained with a B/W machine vision system. Sorting factors which were based on normalized histogram and statistical analysis(STEPDISC Method) had good separability for various garlic samples. Bayes discriminant function and neural network sorting algorithms were developed with the sample images and were experimented on various garlic samples. It was showed that garlic samples could be classified by sorting algorithm with average sorting accuracies of 88.4% by Bayes discriminant function and 93.2% by neural network.

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A Novel Method for a Reliable Classifier using Gradients

  • Han, Euihwan;Cha, Hyungtai
    • IEIE Transactions on Smart Processing and Computing
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    • v.6 no.1
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    • pp.18-20
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    • 2017
  • In this paper, we propose a new classification method to complement a $na{\ddot{i}}ve$ Bayesian classifier. This classifier assumes data distribution to be Gaussian, finds the discriminant function, and derives the decision curve. However, this method does not investigate finding the decision curve in much detail, and there are some minor problems that arise in finding an accurate discriminant function. Our findings also show that this method could produce errors when finding the decision curve. The aim of this study has therefore been to investigate existing problems and suggest a more reliable classification method. To do this, we utilize the gradient to find the decision curve. We then compare/analyze our algorithm with the $na{\ddot{i}}ve$ Bayesian method. Performance evaluation indicates that the average accuracy of our classification method is about 10% higher than $na{\ddot{i}}ve$ Bayes.