Sonar Image Segmentation via Entropy Method Author: Shuyue Jia and Ziyu Huo @ Human Sensor Laboratory, School of Automation Engineering, Northeast Electric Power University, Jilin, China. Date: June of 2018 Read the Original Shipwrecked Sonar Image Gray the Image Denoise the Image: DCT (Discrete Cosine Transform) Denoise Edge Detection (Roberts Operator) Removing Shadow Boundaries Image Localization (Threshold) Remove Ship Boundaries Image Dilate White Pixel (Morphology Dilation) Merge Denoise & Dilation Images 2-D Entropy Segamentation Postprocessing