缨帽变换的遥感图像水边线信息提取方法

A method of extracting shoreline information from remote sensing image based on Tasseled Cap transformation

针对悬浮泥沙含量较大的海域水边线信息提取困难这一问题,该文提出了一种基于缨帽变换的遥感图像水边线信息提取方法。首先,针对悬浮泥沙含量较多,导致传统的水体信息提取方法失效这一问题,提出基于缨帽变换提取水体信息;其次,基于长度、距离和方向等特征知识,开展噪声去除、断线连接研究,提取水边线信息;最后,将水边线信息提取结果与原始图像叠加,进行精度评价。实验结果表明,该方法得到的水边线信息边界清晰,准确性较高,对于泥沙含量较高海域的水边线信息提取较为有效。

Aiming at the problem that it was difficult to extract shoreline information in the higher suspended sediment area,a new method of extracting shoreline information from remote sensing image based on Tasseled Cap transformation had been put forward in this paper.First of all,according to the problem of higher suspended sediment content which leads to the failure of traditional water information extraction method,the paper proposed to extract water information based on Tasseled Cap transformation;Secondly,based on the characteristics of length,distance and direction,noise reduction and broken line connection were studied to extract shoreline information;finally,the results of the shoreline extraction were superimposed on the original image to evaluate the accuracy.The experimental results showed that the shoreline information obtained by this method was clear in boundary and high in accuracy,and the method was more effective for extracting shoreline information in the higher suspended sediment area.