Estimating the resolution of real images

TL;DR

This paper introduces a universal method to estimate the resolution of real images by analyzing their Fourier domain, without relying on test objects or threshold criteria, applicable across various imaging modalities.

Contribution

The paper presents a novel Fourier-based approach to estimate image resolution directly from real samples, avoiding traditional test object or threshold-based methods.

Findings

Method accurately estimates resolution in diverse imaging modalities.

Applicable to any image type without test objects.

Does not require predefined threshold criteria.

Abstract

Image resolvability is the primary concern in imaging. This paper reports an estimation of the full width at half maximum of the point spread function from a Fourier domain plot of real sample images by neither using test objects, nor defining a threshold criterion. We suggest that this method can be applied to any type of image, independently of the imaging modality.