Modeling Study On The Relationship Between The Mtf And Image Quality Parameters

How to find the change degree of satellite optical system from remote sensing image is an active researching topic in the satellite optical system developing field. It is very important to supervise and control the on-obit satellite and develop the next generation satellite. Now the research focus on the measure MTF directly from remote sensing image through finding special ground object such as bridge, glacier, etc, fitting the line expend function, using .Fourier transform to get MTF. But how to rid of some disadvantages become the hotspots and difficulties. There are a lot of work to make the technique mature. We suppose an idea that building up a data relation model between image quality assessment parameters and optical system assessment parameter MTF. Through model we can use image quality assessment parameters to get MTF indirectly. These parameters can be calculated easily. We proposed some method to build up the model.Our work including: Understand the physical meaning of MTF, Select image quality assessment parameter , Curve fitting based on basic numeric analysis method, curve fitting based on Neural Network.. We bridled model first and then verify the model.