# 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.

## Key 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.

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Source: https://tomesphere.com/paper/1703.00992