基于变差函数的遥感影像纹理特征提取

Extracting Image Texture Characteristics Based on Variogram

遥感影像有着丰富的纹理信息,准确地提取纹理特征对于影像的分割和分类至关重要。基于变差函数的遥感影像纹理特征提取是一种比较实用的且处于探索阶段的影像纹理分析方法。文中通过实例对提取的方法进行了研究,并通过不同变异方向纹理图像的分析比较,阐述了纹理特征准确提取应正确选取的3个因子、不同计算方向对纹理图像生成结果的影响,实验和分析还表明了变差函数法是遥感图像纹理特征提取的一种有效手段。

There is abundant texture information in remote sensing image. Extracting texture feature accurately is very important to image segmentation and classification. It is practical texture analysis method appropriate to extract image texture characteristics based on variogram. The text studies the extraction method by example, analyses and compares texture image with different variations direction, expatiates the influence of texture image by correctly select the three factors, different calculation direction. The experiment and analysis also shows that variogram is an effective means to extract remote sensing image texture characteristics.