Best PSF for blurred images

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andi shahaj
andi shahaj 2017-6-2
评论： Signal Express 2022-4-19
I want to deconvolute an image that I know to be out of focus and am wondering if anybody knows what a good point spread function is for that.
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Image Analyst
Image Analyst 2022-4-18
@Signal Express, what does this mean to you " I have determined the resolution". Usually, to most everyone else, it means that you have mapped out your contrast at varying bar spacings to get the MTF. Then you have defined some value of MTF that defines resolution for you, like the 10% or 50% point of the peak MTF.
I don't know what MSF is.
You can google "PSF from MTF" and find lots of discussions on how to do it.
Signal Express
Signal Express 2022-4-19
@Image Analyst: Sir, when I say I have determined the resolution, I mean just by observing the USAF chart element that remain distinct and do not blur together when the chart's centre is expanded. I guess that be defined in linepairs per mm.

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Walter Roberson
Walter Roberson 2017-6-2
There is no single point spread function for that purpose.
deblurring is often handled using a gaussian, and there are ways to tune the parameter of the gaussian, but there is no one parameter that is "best" for all situations.

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