Unformatted text preview: Try a lot of different weights under Filters > Custom (with and without scaling and bias) • Smoothing with Uniform weighting (box filter) • Smoothing with Gaussian weighting – with radius of different sizes - How can this do a 100x100 Gaussian Smooth so quickly? (Separability into 2 1-D smooths) • Edge Detection (Horizontal, Vertical) – then combine (with Opacity) to illustrate Gradient Magnitude • Laplacian • Sharpening 5. Median filter Zoom image up – create white pixel, black pixel over small ROI – right over the top of an edge. Then use Median Filter to clean it up without destroying the edge. 6. Unsharp Masking Reverse-engineer the Unsharp Masking Kernel. 7. The Laplacian Operator Derive the Laplacian Operator as the difference of the differences....
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- Winter '08
- Median filter, Laplacian Operator, 3-point weighted average, simple filter