[PDF] [PDF] Chapter3 Image Transforms

[PDF] Chapter3 Image Transforms

3 2 The Fourier Transform and Properties h bl f • 3 3 Other Separable Image Transforms • 3 4 Hotelling Transform Digital Image Processing Prof zhengkai Liu 

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Chapter3 Image Transforms

•Preview

31G lI d i dCl ifi i

3 1G enera l I ntro d uct i on an d Cl ass ifi cat i on • 3.2 The Fourier Transform and Properties hbl f • 3.3 Ot h er Separa bl e Image Trans f orms • 3.4 Hotelling Transform

Digital Image Processing

Prof.zhengkai Liu Dr.Rong Zhang1

Chapter3 Image Transforms

Preview

General steps of operation in frequency domain

,')7 ),(vuH

General

steps of operation in frequency domain 3RVW ),(vuF ),(),(vuHvuF 3RVW

SURFHVVLQJ

f y x g y x f y x g

Digital Image Processing

Prof.zhengkai Liu Dr.Rong Zhang2

Chapter3 Image Transforms

Preview

Lowpass filterLowpass

filter

And highpass filter

Digital Image Processing

Prof.zhengkai Liu Dr.Rong Zhang3

Chapter3 Image Transforms

Preview

Directly display DFT coefficientsDirectly

display DFT coefficients

Digital Image Processing

Prof.zhengkai Liu Dr.Rong Zhang4

Chapter3 Image Transforms

Preview

Display DFT coefficients after log operateDisplay

DFT coefficients after log operate

Digital Image Processing

Prof.zhengkai Liu Dr.Rong Zhang5

Chapter3 Image Transforms

PreviewRotational properties of DFT

Digital Image Processing

Prof.zhengkai Liu Dr.Rong Zhang6

Chapter3 Image Transforms

PreviewExamples of DFT

Digital Image Processing

Prof.zhengkai Liu Dr.Rong Zhang7

Chapter3 Image TransformsChapter3

Image

Transforms

Preview

Blurred image and its DFT

Preview

Blurred

image and its DFT

Digital Image Processing

Prof.zhengkai Liu Dr.Rong Zhang8

Chapter3 Image TransformsChapter3

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