Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Automatic Estimation of Artemia Hatching Rate Using an Object Discrimination Method

  • Kim, Sung (Marine Ecosystem Research Division, KIOST) ;
  • Cho, Hong-Yeon (Marine Environments & Conservation Research Division, KIOST)
  • Received : 2013.08.06
  • Accepted : 2013.09.11
  • Published : 2013.09.30
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Abstract

Digital image processing is a process to analyze a large volume of information on digital images. In this study, Artemia hatching rate was measured by automatically classifying and counting cysts and larvae based on color imaging data from cyst hatching experiments using an image processing technique. The Artemia hatching rate estimation consists of a series of processes; a step to convert the scanned image data to a binary image data, a process to detect objects and to extract their shape information in the converted image data, an analysis step to choose an optimal discriminant function, and a step to recognize and classify the objects using the function. The function to classify Artemia cysts and larvae is optimally estimated based on the classification performance using the areas and the plan-form factors of the detected objects. The hatching rate using the image data obtained under the different experimental conditions was estimated in the range of 34-48%. It was shown that the maximum difference is about 19.7% and the average root-mean squared difference is about 10.9% as the difference between the results using an automatic counting (this study) and a manual counting were compared. This technique can be applied to biological specimen analysis using similar imaging information.

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