Top 5% contributor
7 months ago
Thank you guys.
Answered 9 months ago
I am trying to calculate the 3 angles of each triangle generated by Delaunay triangulation. For example, I have already obtained...
Asked 9 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 ...
Asked 1 year ago
thank you all, guys.
Answered 2 years ago
However, I found where the problem happens.
If I calculate standard deviation of an image without converting it into double, i...
I want to convert tif grayscale image into other forms, such as jpeg, png, or others.
I searched with Google but no u...
Asked 2 years ago
Hello, I am trying to implement an alogrithm of evaluating fingerprint image quality. This is one of the algorithms presented ...
2 years 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...
My code is shown below, and I opened the built-in function. I found it just calculates the square root or variance. S...
I have a code segment of generating gaussian noise, but I don't understand why it does so.
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 ...
Assume I have a set of point coordinates in a 2D plane.
x = [ 16 16 16 17 18 19 19 20 21 2...
I am reading something about ROC curve. And I found that the curve is different given in different publications. So, I...
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...
I want to ask a question about calculating a measurement of an image feature vector.
For an image, several feature w...
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...
1 year ago
Hello, I want to that described in the title.
How can I calculate the 3rd values. Is that the gradient or something else? Thank...
Asked 2 months ago
I am trying to write some 2D coordinates into a binary file. However, what I read from the file that had been writen i...
Asked 3 months ago
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...
Asked 6 months 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 8 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 10 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 ...
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