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Unsharp Mask
opencv - Python unsharp mask - Stack Overflow
UNSHARP_MASK
Adobe Photoshop CC for Photographers Tutorial | The Unsharp Mask Filter - YouTube
Spatial Filters - Unsharp Filter
Diagnostics | Free Full-Text | Enhancement of Chest Radiograph in Emergency Intensive Care Unit by Means of Reverse Anisotropic Diffusion-Based Unsharp Masking Model