Oil Painting Filter
Kuwahara oil-painting filter: edge-preserving painterly effect, sector-based averaging, radius control.
Apply the Kuwahara filter to produce a painterly, oil-painting-style result. Unlike Gaussian blur, Kuwahara smooths within the most uniform quadrant of each neighborhood. Preserving edges and yielding that classic painted-abstraction look.
How to Use Oil Painting Filter
- Upload an image: Upload one of the formats listed by the tool (PNG, JPG, WebP) and wait for the local preview.
- Adjust settings and process: Adjust the available controls, then run the selected image processing workflow in your browser.
- Review and download: Review the result, then download it in one of the formats offered by this tool.
Frequently asked questions
What is the Kuwahara filter?
Kuwahara is a non-linear smoothing filter that averages pixels within the most uniform quadrant of a local neighborhood. It blurs smooth regions while preserving edges, producing a painterly effect.
What is the difference vs Gaussian blur?
Gaussian blur smooths edges; Kuwahara preserves them. That's why Kuwahara produces the distinctive oil-painting look instead of a defocused appearance.
What is generalized Kuwahara?
The generalized version divides the neighborhood into N overlapping sectors (8 or 16) instead of just 4 quadrants, producing smoother, more natural output.