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How can I empirically determine the point-spread function?

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How can I empirically determine the point-spread function? Jeffrey Thalhammer 07 Aug 00:45
Jeffrey Thalhammer
2008-08-07 00:45:41 UTC (over 16 years ago)

How can I empirically determine the point-spread function?

Hello-

This question isn't specifically related to Gimp, but I thought some folks on this list would have the appropriate expertise to answer it. So here goes...

I'm working on software that involves recognizing a certain pattern in extremely blurry images. Thus far, standard deconvolution techniques haven't adequately cleaned up the blur. So instead, I thought I might try it the other way around -- that is, distort the pattern that I'm looking for and then compare the distorted pattern to the actual image.

So basically, I have a series of specimen images taken with a particular camera. For each one, I can precisely define what the image is supposed to look like. So how would I empirically determine the point-spread function or convolution kernel that would best translate my model images into the specimen images?

Or am I asking the wrong question entirely?

Thanks in advance.

-Jeff