Howtosignalprocessing
As a function of the angular pattern size, equation for the normalized PSF intensity can be written as: with a=πDsinα/2, in units of λ, where D is the aperture diameter and α the angular point height in the image plane.
What is PSF estimation?
The point spread function (PSF) describes how an imaging system responds to an unresolved point source. In other words, the PSF gives a measure of the amount of blurring that is added to any given object as a result of imperfections in the optics.
How do I get PSF from an image?
To be sure, you can calculate it knowing the optical resolution d = lambda / 2*NA. (NA is the second number written on the objective lens, after the slash after the magnification number.) Then divide d by the pixel spacing in the image and that is the approximate PSF size.
What is PSF and MTF?
A point spread function (PSF) or modulation transfer function (MTF) is a measure of how well focused a satellite imaging sensor is. Every type of camera system has a slight amount of defocus.
What is PSF in image?
The ideal point spread function (PSF) is the three-dimensional diffraction pattern of light emitted from an infinitely small point source in the specimen and transmitted to the image plane through a high numerical aperture (NA) objective.
