数字遥感图像清晰度评价研究

Research on definition evaluation of digital remote sensing images

清晰度作为衡量数字图像质量的重要指标,现有的评价方法仍不够成熟。经对当前主要的图像清晰度评价方法分析研究,提出一种基于边缘对比度的遥感图像清晰度评价方法,并进行了实验数据分析。结果表明,该评价方法客观、高效,既能够对不同模糊程度的同一图像内容进行清晰度评价,也能在一定程度上对不同内容的遥感图像进行评价,具有很高的实用性。

Definition is an important index to evaluate digital image quality,but the existing evaluation methods are still not mature enough. Through analyzing and researching the main methods for the image definition evaluation,a definition evaluation method of remote sensing images is put forward according to the edge contrast degree,and the experiment data is analyzed in this paper. The result shows that the evaluation method is objective and efficient,and can evaluate the contents in a same picture with the different illegibility degree and the remote sensing images with different contents. It has high practicability.