细节信息容量与MTF相关分析

Correlation Analysis between Image Detail Information Capacity and MTF

文章从信息容量的角度出发,对图像宏观质量做出评价,再通过研究图像的细节信息容量参数,对在宏观上质量相当的图像做出更进一步的评价,挑选出边缘清晰、纹理等细节信息丰富的图像。然后将该评价参数与Ealing仪测得的调制传递函数(MTF)值的变化趋势作曲线回归分析,实验结果表明,细节信息容量与数字成像系统的MTF值的变化有着很好的正相关关系,这对评价数字成像系统MTF变化情况具有较好的实际应用价值。

Image Information Capacity is used to evaluate the image quality, and it can reflect the image quality in a whole. But it can not tell us whether the edges or the texture of the image is clear, so the concept of Image Detail Information Capacity was introduced. With this evaluation parameter, the image contains more detail information can be told from several images. Curvilinear regression analysis was used to analysis the relationship between Image Detail Information Capacity and MTF. Experimental result shows that they are high correlation with each other.＂ So using this image evaluation parameter, the Digital Imaging System＇s change of MTF can be measured.