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4 months ago

Thank you guys.

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Answered 5 months ago

I am trying to calculate the 3 angles of each triangle generated by Delaunay triangulation. For example, I have already obtained...

3 Answers

Asked 5 months ago

This is a DFT magnitude graph of a set of 1D points. How can I analyze it? Can I say that the lowest frequency contribute most ...

2 Answers

1

Asked 1 year ago

thank you all, guys.

Answered 1 year ago

However, I found where the problem happens. If I calculate standard deviation of an image without converting it into double, i...

Hello, I want to convert tif grayscale image into other forms, such as jpeg, png, or others. I searched with Google but no u...

Hello, I am trying to implement an alogrithm of evaluating fingerprint image quality. This is one of the algorithms presented ...

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Posted 1 year ago

I am trying to find a center or estimated center of a convex hull of a set of points. In Matlab, we can obtain the convex hull o...

Hello, My code is shown below, and I opened the built-in function. I found it just calculates the square root or variance. S...

4 Answers

Hello, I have a code segment of generating gaussian noise, but I don't understand why it does so. p=1+rand(1)*99; Gaussi...

1 Answers

Hello, Q1. I want to swap a vector like below, Is there a built-in function in Matlab? a = [ 1 2 3 4 5 6 ] a = swap(a) = [...

For example, I have 20 2D points, as the input signal. (xi, yi) i = 1...Z , Assume that Z = 20, i.e. 20 points. How can I cal...

I am using Matlab2011a. I want to compile a external toolbox which needs to use Borland C++. But Matlab doesn't seem to support ...

Asked 9 months ago

Hello, Assume I have a set of point coordinates in a 2D plane. x = [ 16 16 16 17 18 19 19 20 21 2...

Asked 10 months ago

Hello, I am reading something about ROC curve. And I found that the curve is different given in different publications. So, I...

Asked 11 months ago

Hello, I have a set of spacial point, i.e. coordinate (x,y) of each point. I want to use the gaussian mixture model. But, how...

For example, I have an image of 400*360. I want to draw small grids over a region of the image. E.g. draw small grids of 20*20 ...

For example, 10 points' coordinates are known, as (xi, yi) i =1 ... 10 and a corresponding angle of each point is known, as ai ...

I want to implement an approach for calculating Phase spectrum of a set of coordinates. In the paper, it is described as 3 equat...

Hello, I want to ask a question about calculating a measurement of an image feature vector. For an image, several feature w...

Hello, Acutally, I want to generate a 3-D plot for a Gabor filter's (2D matrix) real part and imaginary part. But I don't kn...

I download a code at vision lab of UCSB. It is about Gabor wavelet, and there are something that I don't understand in the code....

Hello, I want to ask a question about calculating a measurement of an image feature vector. For an image, several feature were...

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Hello, For example, there is an image on which I have a set of points and the vertices of the convex hull of these points. We...

0 Answers

Asked 1 month ago

For example, I have a group of points in 2D plane. Then, I make a probplot (normal) of them. p = [xi, yi] i = 1, ..., N...

Asked 4 months ago

I want to calculate the distance between each block centered at (xi, yi) and the centroid of fingerprint image located at (xc, y...

Asked 6 months ago

Suppose that one object has two properties, and they are two discrete variable, as X and Y. The population number of both X and ...

551 views

I am trying to implement a 2D Gabor filter, but I don't understand several parameters of this filter. For example, I use a g...

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