filtering3.slides.printing

filtering3.slides.printing - High-Pass and Band-Pass...

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Unformatted text preview: High-Pass and Band-Pass Filtering High-Pass and Band-Pass Filtering CS 450: Introduction to Digital Signal and Image Processing Bryan Morse BYU Computer Science High-Pass and Band-Pass Filtering Introduction Sharpening Blurring is low-pass filtering, so deblurring is high-pass filtering. I Explicit high-pass filtering I Unsharp Masking I Deconvolution I Edge Detection Tradeoff: I Reduces blur, but I Increases noise High-Pass and Band-Pass Filtering Introduction High-Pass Filtering Ideal: H ( u ) = 1 if u > u c otherwise Gaussian: H ( u ) = 1- e- 1 2 u 2 / uc 2 Butterworth: H ( u ) = 1 1 + ( uc 2 / u 2 ) n High-Pass and Band-Pass Filtering Introduction High-Pass Filters Ideal Butterworth Gaussian High-Pass and Band-Pass Filtering Ideal Filters Ideal Filters and Ringing High-Pass and Band-Pass Filtering Ideal Filters Ideal Filters and Ringing (contd) High-Pass and Band-Pass Filtering Ideal Filters Ideal Filters and Ringing High-Pass and Band-Pass Filtering Gaussian Filters Gaussian High-Pass Filters...
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filtering3.slides.printing - High-Pass and Band-Pass...

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