Image filtering

Image filtering

Reading

What is an image?

Images as functions

Images as functions

What is a digital image?

Image processing

Image processing

Image processing

Noise

Ideal noise reduction

Ideal noise reduction

Practical noise reduction

Mean filtering

Slide 16

Mean filtering

Effect of mean filters

Cross-correlation filtering

Mean kernel

Gaussian Filtering

Mean vs. Gaussian filtering

Filtering an impulse

Convolution

Continuous Filters

Median filters

Comparison: salt and pepper noise

Comparison: Gaussian noise