"imshow" distorts jpeg
Are you displaying at the proper size? fine detail can be lost (aliasing) if your display size is too small, try maximizing it w...

10 years ago | 0

Fusion of CT and MRI images, MI method
Same as least squares, transform 1 of the images according to your criteria (e.g. rotate) then re-calculate MI. Try various tran...

10 years ago | 0

imshow - Stretching image to fill axis
Have you tried image or imagesc? Or the 'axis image' command?

10 years ago | 0

how to do color correction
I guess we just have to assume you are using a normal rgb format... What image analyst suggested was to use your knowledge of t...

10 years ago | 0

Imagesc movie with multiple axes/matrices
I dont use colorbars often, so this was my initial idea without them: syy = reshape(syy,[size(syy,1) size(syy,2) 1 size(sy...

10 years ago | 0

Question

Minimal variance algorithm. Ideas?
I don't have much experience with developing algorithms but I am considering the following problem: How to divide a set of numbe...

10 years ago | 1 answer | 0

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How can I rescale an image while not changing the dimension of the image?
I think you want to look into imtransform, specifically the Xdata and Ydata properties. E.g. you can rotate around the center--k...

10 years ago | 0

Question

Binary mask operation: vector into nonzero part of mask in 1 statement?
I have a logical matrix MASK and a vector VEC with real numbers (uint8 mostly). nnz(MASK) equals length(VEC). I create a new ...

10 years ago | 1 answer | 0

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How to convert a matrix to a Gray scale image?
Its probably double. So do im2uint8(A) or uint8(A) if A is the matrix. Also use imshow instead of image if you can.

10 years ago | 1

How to make this a real number
sprintf?

10 years ago | 0

How to apply Maximum likelihood estimation technique to characterize the amplitude of noise in a given time series
Im just guessing here, but since the least square fit of your time function (inverse fourier?) is a maximum likelihood estimator...

10 years ago | 0

| accepted

I suppose you could read the old data into MATLAB, concatenate and then overwrite old .xls file? Maybe not the fastest solution....

10 years ago | 0

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what is the difference between noise and outlier????..
I guess noise causes outliers, but not all outliers are caused by noise :)

10 years ago | 0

Question

HISTEQ normalization range not clear
When I tried to equalize an image using histeq I got an unexpected result. The original has values in the range 0-199 and the ou...

10 years ago | 0 answers | 0

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how to normalize two discrete time series signal to same time duration???
Use interp1. Or create a fit using fit or polyfit. But beware the difference between interpolation and extrapolation.

10 years ago | 0

Symmetric Positive Semi-definate Covariance matrix using mvnrnd
isequal(sum(eig(SIGMA)>0),length(eig(SIGMA))) Why does eig(SIGMA) give negative eigenvalues?

10 years ago | 1

how can i make a function which will return the largest and the second largest component?
Or: if sum(C==max(C))==1 second = max(C(C<max(C))); else second = max(C); end i.e. test if the maximum i...

10 years ago | 0

Normalizing data
Dividing by the maximum does not correct for offset. So only ranges 0-X go to 0-1. If his column has a negative or nonzero minim...

10 years ago | 0

Question

HISTEQ default not consistent with syntax?
If I have an 8-bit image IM (e.g. cameraman.tif), why does histeq(IM) produce a different result than histeq(IM,ones(1,256))?? ...

10 years ago | 1 answer | 0

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histogram and histogram equalization of an image without using built-in functions
I gave an example here: <http://www.mathworks.com/matlabcentral/answers/23228-i-want-to-know-if-we-can-implement-histogram-equa...

10 years ago | 0