International Journal of Image, Graphics and Signal Processing (IJIGSP)
IJIGSP Vol. 15, No. 6, 8 Dec. 2023
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Chilli Dryness and Ripening Stages Assessment Using Machine Vision
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Author(s)
Mahantesh Sajjan
1,*
Lingangouda Kulkarni
2
Basavaraj S. Anami
1
Nijagunadev B. Gaddagimath
3
Liset Sulay Rodriguez Baca
4
Index Terms
Chilli, Machine vision, Ripening, dryness identification, Color features, Texture features
Abstract
The quality of chilli is prime concern for farmers, traders and chilli processing industries. The effective determination of chilli dryness and ripening stages are important factors in determining its quality and chilli shelf life with respect to manual estimation of ripening/dryness that are complex and time consuming. Chilli dryness and ripeness prediction at post-harvest stage by non-destructive machine vision technologies have potential of fair valuation for chilli produce for the chilli stalk holders. Chilli pericarp color values calculated from RGB, HSV and CIE-L*a*b* color space, texture properties using edge-wrinkles parameters are described by histogram of oriented gradients (HOG). LDA(linear discriminant analysis), RF(random-forest) and SVM(support vector machine) classifiers are analysed for performance accuracy for chilli dryness identification and chilli ripening stages using the machine vision. The chilli dryness identification accuracies of 83%, 85.4% and 83.5% are achieved using chilli color and HOG features with LDA, Random Forest and SVM classifiers respectively. Chilli ripening stage identification with combined chilli feature set of {color, HOG, SURF and LBP} using Support Vector Machine (SVM) average classifier accuracy is 90.56% across four chilli ripening stages. This work is simple with rapid, intelligent and high accuracy of chilli dryness and ripening identification by using machine vision approach has prospect in real-time chilli quality monitoring and grading. The results yielded were promising quality measurements compared previous studies.
Cite This Paper
Mahantesh Sajjan, Lingangouda Kulkarni, Basavaraj S. Anami, Nijagunadev B. Gaddagimath, Liset Sulay Rodriguez Baca, "Chilli Dryness and Ripening Stages Assessment Using Machine Vision", International Journal of Image, Graphics and Signal Processing(IJIGSP), Vol.15, No.6, pp. 67-80, 2023. DOI:10.5815/ijigsp.2023.06.06
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