Convolutional neural network model for the qualitative evaluation of geometric shape of carrot root

Authors

• Piotr Rybacki Poznan University of Life Sciences, Poland
• Zuzanna Sawinska Poznan University of Life Sciences, Poland https://orcid.org/0000-0002-7030-3221
• Miroslava Kačániová Slovak University of Agriculture, Slovakia https://orcid.org/0000-0002-4460-0222
• Przemysław Ł. Kowalczewski Poznań University of Life Sciences, Poland https://orcid.org/0000-0002-0153-4624
• Andrzej Osuch Poznań University of Life Sciences, Poland https://orcid.org/0000-0001-5616-5697
• Karol Durczak Poznań University of Life Sciences, Poland https://orcid.org/0000-0003-4811-005X

DOI: https://doi.org/10.23986/afsci.135986

Abstract

The main objective of the study is the development of an automatic carrot root classification model, marked as CR-NET, with the use of a Convolutional Neural Network (CNN). CNN with a constant architecture was built, consisting
of an alternating arrangement of five Conv2D, MaxPooling2D and Dropout classes, for which in the Python 3.9
programming language a calculation algorithm was developed. It was found that the classification process of the carrot root images was carried out with an accuracy of 89.06%, meaning that 50 images were misclassified. The highest number of 21 erroneously classified photographs were from the extra class, of which 15 to the first class, thus not resulting in significant loss. However, assuming the number of refuse as the classification basis, the model accuracy greatly increases to 98.69%, as only 6 photographs were erroneously assigned.