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Chp 6: Convolution/ Restoration - Coggle Diagram
Chp 6: Convolution/ Restoration
Image Restoration
Image Degradation/Restoration Model
Types (Due to)
1@ Superimposed Interface patterns
2@ Geometric Distortion
3@ Noise
4@ Image Burring
Can be performed in either
1! Spatial domain
2! Other domain
Convolution
Mathematically Represented in 2 ways
What's Mask/Filter?
4 Steps
Correlation VS Convolution
Image Filtering
Spatial domain Filtering
Linear & NON Linear
Operations?
1....Mean
Calcluation
Effects
2.... Median
3.....Max
4......Min
5.....Weighted mean
Sliding Neighborhood Operations
Noise
Test
Formula
4 main noise types
1% Gaussian Noise
Fix it?
2% Salt & Pepper noise
Fit it?
3% Periodic Noise
Fit it?
4% Speckled Noise
Fix it?
Median Filtering
e.g good for?
Image smoothing
Weighted smoothing Filter
Strange things that happens on spatial filtering
How to fix it?
1# Ignore the Edges
DIS
2# Pad with 0
DIS