mask blur

**Mask blur** is the **edge-feathering technique that smooths mask boundaries to improve blend transitions during inpainting** - it reduces hard seams by creating gradual influence between edited and preserved regions. **What Is Mask blur?** - **Definition**: Applies blur to mask edges so edit strength tapers instead of changing abruptly. - **Blend Behavior**: Soft boundaries help generated textures merge with neighboring pixels. - **Parameterization**: Controlled by blur radius or feather width relative to image resolution. - **Use Cases**: Common in object removal, skin retouching, and style harmonization edits. **Why Mask blur Matters** - **Seam Reduction**: Minimizes visible cut lines at mask borders. - **Realism**: Improves continuity of lighting and texture near transition zones. - **Error Tolerance**: Compensates for slight mask inaccuracies around complex edges. - **Workflow Consistency**: Standard feathering presets improve output reliability. - **Overblur Risk**: Excessive blur can weaken edit specificity and alter protected content. **How It Is Used in Practice** - **Radius Scaling**: Set blur radius proportional to object size and output resolution. - **A/B Comparison**: Compare hard and soft masks on the same seed for boundary diagnostics. - **Task Presets**: Use tighter blur for precise replacement and wider blur for texture cleanup. Mask blur is **a core boundary-smoothing tool for local generative edits** - mask blur should be tuned to scene scale so blending improves without losing edit control.