CV in a Nutshell (||) Yi Li - PowerPoint Presentation

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CV in a Nutshell (||) Yi Li
CV in a Nutshell (||) Yi Li

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httpuserscecsanueduau yiliCVinNutshellhtm Outline Paper discussion Image Processing overview Diffusion Process Image Processing filtering Filter Banks Image Processing filtering ID: 789020 Download

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image processing filter filtering processing image filtering filter paper active diffusion banks discussion pass reconstruction transform smoothing arma concepts

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Slide1

CV in a Nutshell (||)

Yi Li

http://users.cecs.anu.edu.au/~

yili/CVinNutshell.htm

Slide2

Outline

Paper discussion

Image Processing (overview)

Diffusion Process

Image Processing (filtering)

Filter Banks

Image Processing (filtering)

Noise Removal

Slide3

Paper discussion

Edge detection and Smoothing

Diffusion

Homogenous

Isotropic

flux

Diffusion as PDE

whiteboard

Slide4

Paper discussion

Active Contours without Edges

Active shape

Snake

Active appearance

PDE

Slide5

Useful Concepts in SP

ARMA model

AR

MA

ARMA

Filtering / Filter banks

Slide6

Filtering

Fourier

transform

Matrix-vector form

High pass, low pass, and band

pass

Nyquist

frequency

Filter

banks

Downsample

and

upsample

Perfect reconstruction

JPEG

compression

Slide7

Image Processing (1)

Histogram

Equalization

Color space conversion

RGB / HSV / LAB

Coding and Compression

Reconstruction

Medical imaging

Slide8

Image Processing (2)

Processing

Sharpening

?

Smoothing?

Extracting useful information

Edge?

Boundary?

Texture analysis / synthesis?

Understanding?

Slide9

Useful Concepts in IP

Toeplitz

matrix

Sampling

Transform

DFT

Cosine

Haar

Slide10

Motion deblurring

Y=

Ax

Conjugate gradient descent

Trick: using convolution to solve the system effectively.

Slide11

Q/A

Shom More....
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