A computer vision system for oocyte counting using images captured by smartphone |
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Affiliation: | 1. Federal Institute of Education, Science and Technology of Mato Grosso do Sul, Mato Grosso do Sul, Aquidauana, Brazil;2. Federal Institute of Education, Science and Technology of Mato Grosso do Sul, Mato Grosso do Sul, Campo Grande, Brazil;3. Dom Bosco Catholic University, Tamandaré Avenue, Campo Grande – MS, 79117-010, Brazil;4. Federal University of Mato Grosso do Sul, Costa e Silva Avenue, Campo Grande – MS, 79070-900, Brazil;5. State University of Mato Grosso do Sul, Dom Antonio Barbosa Avenue, Campo Grande – MS, 79115-898, Brazil |
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Abstract: | This work proposes a computer vision procedure for counting Twospot astyanax (Astyanax bimaculatus) oocytes in Petri dishes using images captured by smartphone. First, the proposed procedure uses simple linear iterative clustering (SLIC) to divide the images into groups of pixels (superpixels). Then, based on their color and space characteristics, the images are classified into light background, dark background, dirt, or oocyte by a machine learning algorithm. Five different types of machine learning algorithms were tested: support vector machines (SVM), decision trees using the algorithm J48 and random forest, k-nearest neighbors (k-NN), and Naive Bayes. To train the algorithms, 8.578 superpixels were classified by an expert into oocyte (n = 354), dirtiness (n = 651), dark background (n = 3.622), and light background (n = 3.951). Of the five learning algorithms, SVM obtained the best result with 97% correct oocyte recognition. Given the wide availability of smartphones, we therefore conclude that the presented procedure can be a valuable tool in future experiments and studies on fertilization and hatching success in Twospot astyanax. |
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Keywords: | Computer vision Fish reproductive process Fish oocyte count Smartphone images |
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