Radar image local point-surface contrast product ship detection method

• Main Authors: LI GUANGXIN, SHI XIAOFEI, CHEN FANGYUAN, DENG ZHIYU, ZHANG XINPENG, NI KUIYUAN, LYU MIAO, SHEN ZIYANG
• Format: Patent
• Language: Chinese; English
• Published: 10.09.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention provides a radar image local point-surface contrast product ship detection method comprising the following steps: obtaining a radar image, and carrying out mean shift filtering on the radar image to obtain a to-be-processed image; constructing a difference enhancement factor for the to-be-processed image to enhance the edges of a ship target and the background, and obtaining a first enhanced image; constructing a point contrast weight and a surface contrast weight, obtaining a local point-surface contrast product based on the point contrast weight and the surface contrast weight, and processing the first enhanced image based on the local point-surface contrast product so as to enhance the contrast of the target and the background, and obtaining a second enhanced image; and performing linear stretching on the second enhanced image to increase the gap between the ship target and a non-ship target, thereby obtaining the ship target. 本发明提供一种雷达图像局部点面对比度积舰船检测方法，包括：获取雷达图像，并对所述雷达图像进行均值漂移滤波得到待处理图像；构建部差异性