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CV in a Nutshell (||) Yi Li inNutshell.htm.

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Presentation on theme: "CV in a Nutshell (||) Yi Li inNutshell.htm."— Presentation transcript:

1 CV in a Nutshell (||) Yi Li inNutshell.htm

2 Outline Paper discussion Image Processing (overview) – Diffusion Process Image Processing (filtering) – Filter Banks Image Processing (filtering) – Noise Removal

3 Paper discussion Edge detection and Smoothing – Diffusion Homogenous Isotropic flux – Diffusion as PDE whiteboard

4 Paper discussion Active Contours without Edges – Active shape – Snake – Active appearance – PDE

5 Useful Concepts in SP ARMA model – AR – MA – ARMA Filtering / Filter banks

6 Filtering Fourier transform – Matrix-vector form High pass, low pass, and band pass – Nyquist frequency Filter banks – Downsample and upsample – Perfect reconstruction – JPEG compression

7 Image Processing (1) Histogram – Equalization Color space conversion – RGB / HSV / LAB Coding and Compression Reconstruction – Medical imaging

8 Image Processing (2) Processing – Sharpening? – Smoothing? Extracting useful information – Edge? – Boundary? – Texture analysis / synthesis? – Understanding?

9 Useful Concepts in IP Toeplitz matrix Sampling Transform – DFT – Cosine – Haar

10 Motion deblurring Y=Ax Conjugate gradient descent Trick: using convolution to solve the system effectively.

11 Q/A


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