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Frequency domain Image Processing

Frequency domain Image Processing

Frequency domain Image Processing. Comp344 Tutorial Kai Zhang. Outline. Matlab preliminaries Matlab function design Shifting frequency component Low pass filtering design. Matlab Preliminaries. Basic commands 2d Fourier transform: F = fft2(f, P, Q);

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330 views • 16 slides
Frequency domain Image Processing

Frequency domain Image Processing

Frequency domain Image Processing. Comp344 Tutorial Kai Zhang. Outline. Matlab preliminaries Matlab function design Shifting frequency component Low pass filtering design. Matlab Preliminaries. Basic commands 2d Fourier transform: F = fft2(f, P, Q);

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911 views • 16 slides
Expectation Maximization for GMM

Expectation Maximization for GMM

Expectation Maximization for GMM. Comp344 Tutorial Kai Zhang. GMM. Model the data distribution by a combination of Gaussian functions Given a set of sample points, how to estimate the parameters of the GMM?. EM Basic Idea. Given data X, and initial parameter ? t Assume a hidden variable Y

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472 views • 13 slides
Image Segmentation I

Image Segmentation I

Image Segmentation I. Comp344 Tutorial Kai Zhang. Outline. Line & Edge detection Hough transform. Line Detection. Apply a mask and compute the image response Design of Mask determines what kind of line is detected -1 -1 -1 -1 -1 2 -1 2 -1 2 -1 -1

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266 views • 11 slides
Image Representation

Image Representation

Image Representation. Comp344 Tutorial Kai Zhang. Boundary representation. Chain codes Fourier Descriptor. Chain code. Represent a boundary by a connected sequence of straight-line segments of specified length and direction Freeman chain codes

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255 views • 9 slides

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