自然场景下船舶水线提取算法的研究  

A precise extraction of waterline under natural scene

作　　者：宋涛[1,2] 吴海[1] 侯培国[1] 李雅倩[1] 李海滨[1] 陈琛[1,2] SONG Tao WU Hai HOU Peiguo LI Yaqian LI Haibin CHEN Chen(Key Lab of Industrial Computer Control Engineering of Hebei Province, Yanshan University, Qinhuangdao 066004, China Qinhuangdao Audio-Visual Machinery Research Institute, Qinhuangdao 066000, China)

机构地区：[1]燕山大学工业计算机控制工程河北省重点实验室,河北秦皇岛066004 [2]秦皇岛视听机械研究所,河北秦皇岛066000

出　　处：《光学技术》2017年第1期61-65,共5页Optical Technique

基　　金：河北省自然科学基金(D2014203153);河北省自然科学基金(F2015203212)

摘　　要：水线精确提取是基于机器视觉的水尺计重系统中的技术难题。针对自然场景下采集的图像存在着光照不均匀、场景复杂等问题,通过帧间作差结合图像配准对图像进行预处理;提出一种基于三角隶属函数关系的迭代分割方法;通过线性采样和双线性插值法,提取出完整的水线。实验证明了该水线提取算法的稳定性和准确性。Precise extraction of waterline is a technical problem in draft survey system based on computer vision. In view of natural scene, images might be affected by non-uniform illumination and various scenes etc. The preprocessing of the image is performed though frame difference combined with image registration; An iterative segmentation method is proposed based on triangle membership function; Linear sampling and bilinear interpolation method are utilized to extract waterline completely. A lot of experiments show the robustness and accuracy of the waterline extraction algorithm.

关 键 词：水线提取 图像配准 隶属函数 双线性插值 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]