Combination of Feature Extractions for Classification of Coral Reef Fish Types Using Backpropagation Neural Network

Luther Latumakulita - Sam Ratulangi University, North Sulawesi, Indonesia
I Nyoman Arya Astawa - Politeknik Negeri Bali, Bali, Indonesia
Vitrail Mairi - Sam Ratulangi University, North Sulawesi, Indonesia
Fajar Purnama - Udayana University, Bali, Indonesia
Aji Wibawa - Universitas Negeri Malang, Malang, East Java, Indonesia
Nida Jabari - Palestine Technical University Kadoorie, Palestine
Noorul Islam - Kanpur Institute of Technology, Kanpur, India

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Feature extraction is important to obtain information in digital images, where feature extraction results are used in the classification process. The success of a study to classify digital images is highly dependent on the selection of the feature extraction method used, from several studies providing a combination of feature extraction solutions to produce a more accurate classification.  Classifying the types of marine fish is done by identifying fish based on special characteristics, and it can be through a description of the shape, fish body pattern, color, or other characteristics. This study aimed to classify coral reef fish species based on the characteristics contained in fish images using Backpropagation Neural Network (BPNN) method. Data used in this research was collected directly from Bunaken National Marine Park (BNMP) in Indonesia. The first stage was to extract shape features using the Geometric Invariant Moment (GIM) method, texture features using Gray Level Co-occurrence Matrix (GLCM) method, and color feature extraction using Hue Saturation Value (HSV) method. The third value of feature extraction was used as input for the next stage, namely the classification process using the BPNN method. The test results using 5-fold cross-validation found that the lowest test accuracy was 85%, the highest was 100%, and the average was 96%. This means that the intelligent model derived from the combination of the three feature extraction methods implemented in the BPNN training algorithm is very good for classifying coral reef fish.


BPNN; classification; combination method; coral reef fish; feature extraction.

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