# Compensation for the setup instability in ptychographic imaging

## TL;DR

This paper introduces a simple, general method to recover high-frequency information in ptychographic imaging degraded by setup vibrations, significantly improving image quality without prior knowledge of the vibrations.

## Contribution

The authors propose a novel subtraction-based technique to compensate for setup vibrations in ptychography, enhancing reconstruction quality without requiring prior vibration data.

## Key findings

- High-frequency components can be recovered using the proposed subtraction method.
- Image quality in ptychography improves significantly with the new approach.
- Method is applicable across various research fields without prior vibration knowledge.

## Abstract

The high-frequency vibration of the imaging system degrades the quality of the reconstruction of ptychography by acting as a low-pass filter on ideal diffraction patterns. In this study, we demonstrate that by subtracting the deliberately blurred diffraction patterns from the recorded patterns and adding the properly amplified subtraction to the original data, the high-frequency components lost by the vibration of the setup can be recovered, and thus the image quality can be distinctly improved. Because no prior knowledge regarding the vibrating properties of the imaging system is needed, the proposed method is general and simple and has applications in several research fields.