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"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...

casi 12 años hace | 0

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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...

casi 12 años hace | 0

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

casi 12 años hace | 0

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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...

casi 12 años hace | 0

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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...

casi 12 años hace | 0

Pregunta


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...

casi 12 años hace | 1 respuesta | 0

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Respondida
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...

casi 12 años hace | 0

Pregunta


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 ...

casi 12 años hace | 1 respuesta | 0

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Respondida
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.

casi 12 años hace | 1

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How to make this a real number
sprintf?

casi 12 años hace | 0

Respondida
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...

casi 12 años hace | 0

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

casi 12 años hace | 0

| aceptada

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

casi 12 años hace | 0

Pregunta


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...

alrededor de 12 años hace | 0 respuestas | 0

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Respondida
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.

alrededor de 12 años hace | 0

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

alrededor de 12 años hace | 1

Respondida
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...

alrededor de 12 años hace | 0

Respondida
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...

alrededor de 12 años hace | 0

Pregunta


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))?? ...

alrededor de 12 años hace | 1 respuesta | 0

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Respondida
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...

alrededor de 12 años hace | 0

Respondida
I want to know if we can implement histogram equalization without the histeq function?
4 bit grayscale example: grayLevels = (0:15); %Histogram of image, counts per level: grayHist = [0 0...

alrededor de 12 años hace | 0

Respondida
Low level visual equalization of images
I'm assuming the resolutions are identical. If images have different content it's hard to give them equal parameters. One coul...

alrededor de 12 años hace | 0