SXM Image Analyzer

Thu, 08 Oct 2026 00:00:00 +0000

Description

SXM Image Analyzer is a Streamlit app for quickly viewing and cleaning up scanning probe microscopy (SPM/STM) images saved in the Nanonis .sxm format, with no local installation needed. Upload a .sxm file (up to 200 MB) to see the image and its acquisition metadata right away.

Open the app directly via the site link.

Features

Original image

View the raw topography image as recorded.
Download the unfiltered image (PNG), the scan metadata (TXT) and the STM data grid (NPZ) for further analysis in Python.

Processing

Use the Process tab to enhance the image interactively:

FFT filtering with Gaussian, Blackman–Harris or exponential windows and an adjustable width (σ), to remove high-frequency noise.
Unsharp masking with adjustable radius and amount, to sharpen molecular and atomic features.
Image transforms: contrast inversion and cosine transform.

The processed image, processed raw image and metadata can be downloaded.

Analysis (coming soon)

Dedicated analysis modes for specific adsorbates are under development: chitosan, RNA, proteins, chlorophyll and glycolipids.

Tutorial

A step-by-step notebook showing how to load .sxm files and apply these filters in Python is available on GitHub.

Image Processing | My CV