| dc.description.abstract |
Injera is Ethiopian most common cultural food. This cultural food is prepared
usually teff flour and sometimes prepared barley, corn, rice, sorghum, wheat, and a mixture
of those flours. However, currently, a person mixes bad things with teff flour and other
flour to make a high profit. A mixture of bad things with teff flour and other flour Injera has
different problems like health problems for the user, loss of cultural identity, and marketing
problems. Identification of Injera is difficult using naked eyes due to their visual
similarities. Various researches have been done on food recognition and detection using
different techniques. However, the previous researchers did not use image enhancement
and color space conversion techniques. And also, the dataset used in different classes is
less similar. In this study, we have performed Injera mixture identification using machine
learning and computer vision approach. We prepared a combinational ratio of Injera
datasets using traditional fermentation techniques. We captured hot Injera before 1 hour
and cold Injera after 24 hours using Samsung Galaxy S5. In this study, we have used Grey
Level Co-occurrence Matrix (GLCM), Convolutional Neural Network (CNN), and a
combination of GLCM and CNN as a feature extraction and Support Vector Machine
(SVM) and Random Forest (RF) as a classifier to design Injera mixture identification
system. We have examined different combination ratios of hot and cold (after 24 hours)
frontside and backside Injera. The proposed hybrid CNN and GLCM features trained with
SVM and RF classifiers achieved the highest accuracy obtained in this work. From the
experimental results, we registered an accuracy of 10:90 frontside hot Injera, 10:90
backside hot Injera, 10:90 frontside cold Injera, 10:90 backside cold Injera, 20:80
frontside hot Injera, 20:80 backside hot Injera, 20:80 frontside cold Injera, 20:80 backside
cold Injera is 87%, 86%, 93%, 92%, 91%, 95%, 98%, and 98% for SVM and 88%, 87%,
91%, 91%, 93%, 94%, 98%, and 98% for RF respectively on combined features.
Keywords: CNN, GLCM, Feature Extraction, SVM, Random Forest, Thresholding. |
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