基于多阈值大津法直方图分割的SAR数据伪彩色量化方法

Pseudo-Color Quantization of SAR Data Based on Multi-Threshold Otsu Method of Histogram Segmentation

为了减少SAR数据量化引起的辐射信息损失,提高SAR图像的判读效果,提出了基于多阈值大津法直方图分割,对SAR数据直接在HSI彩色空间编码的方法。采用水陆交界地区与丘陵地区SAR数据进行了实验,验证了该编码方法在减少辐射信息损失和提高目视判读效果方面较灰度量化和传统伪彩色量化方法具有优势。

For reducing the losing of radiant information in SAR data quantization and improving the interpreta- tion effect, a method that based on multi-threshold Otsu method of histogram segmentation and encoding the SAR data in HSI color space directly has been proposed. The experiments were carried on with SAR data of an amphibious area and a hill area, and the results proved that compared with gray quantization and traditional pseudo-color quantization, the proposed method had advantages both in reducing the losing of radiant information and improved the visual interpretation effects .