GalileoSharp
NASA-Grade Image Sharpening
Sharpen photos with five real image processing algorithms used in scientific and space imaging — Unsharp Mask, Laplacian, Fourier, Richardson-Lucy deconvolution, and Wavelet. Compare results with a before/after split view, process whole folders in batch, and keep everything on your device. No account, no internet, no tracking.
Five Real Sharpening Algorithms
Unsharp Mask
The classic darkroom technique, digitized. Subtracts a blurred copy from the original to boost edge contrast. Fast, predictable, and great for everyday photos.
Laplacian
Second-derivative edge enhancement. Emphasizes fine detail and texture by amplifying intensity transitions — ideal for line work and structural detail.
Fourier
Frequency-domain sharpening. Transforms the image into frequency space and boosts high frequencies directly — the approach used in scientific image restoration.
Richardson-Lucy
Iterative deconvolution made famous by the Hubble Space Telescope repair era. Reverses blur by estimating the original scene — the heavyweight for astrophotography.
Wavelet
Multi-scale decomposition that sharpens detail at selected scales while leaving smooth areas untouched — the planetary imaging community's favorite.
Batch Processing
Apply your chosen algorithm and settings to a whole set of images in one pass. Perfect for astrophotography stacks and photo shoots.
Features
Before / After Split View
Drag the divider across your image to compare the original and sharpened result side by side before saving.
100% On-Device
All processing happens locally. No account, no internet connection, no analytics — your photos never leave your phone.
Tunable Parameters
Adjust strength, radius, and iterations per algorithm to dial in exactly the amount of sharpening your image needs.
Save to Downloads
Sharpened images are written to your Downloads folder only when you tap save — originals are never modified.
Screenshots
Unsharp Mask
Laplacian
Fourier
Richardson-Lucy
Wavelet
Download
Version: 1.0.0
Requires: Android 8.0+ (API 26)
Price: Free
Google Play listing coming soon.
Direct APK download:
Download APK v1.0.0Security & Privacy
- ✓ No account required — all processing stays on your device
- ✓ No analytics, no telemetry, no user tracking
- ✓ Fully offline — no network calls
- ✓ Minimal permissions — media access only, to open and save images