I definitely don't get all zeros with imread. Problem solved? >> nnz(imread('C0039_100122_INDS.png')) ans = 4624 ...

9 months ago | 0

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FFT, IFFT and phase shifting
Is this what you want Xf=fftshift(fft(y)); f=fs.*((0:N-1) -ceil((N-1)/2))/N; subplot(2,1,2) stem(f,abs(Xf)/length(y)); ti...

9 months ago | 0

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Branching points problem in binary image
[I,J]= find( bwmorph(BW,'branchpoints') );

9 months ago | 0

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How do I replace missing data with other values?
isnan is the correct way to detect and replace nans. Rn=radi; Rn(isnan(radi))= ---- something else ----

9 months ago | 0

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How can I register or rotate series of image in matlab
imregister or imregtform seems like a good choice.

9 months ago | 0

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parallel computation for a for loop
parfor pi=1:NP*kkk Tempo1 = zeros( p(pi) ,1 ); Tempo1_M = zeros( p(pi) ,1); Tempo2 = zeros(q(pi) ...

9 months ago | 0

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How to Hybrid two median filters
out = medfilt2(medfilt2(yourImage))

9 months ago | 1

fitting a funciton with minimax error
Consider using fminimax.

10 months ago | 1

Error using trainNetwork. Unable to read file.
I think it is expecting more traditional types of image files like .jpg,.png, etc.. I think for .mat you need to specify a speci...

10 months ago | 0

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How to use a for-loop to find the onset (first element) of trials of zeros, ones and twos, in an array of sequences of zeros, ones and twos
No, we're not going to do your homework for you. Go away and leave us alone.

10 months ago | 0

Rotation of the circle (points)
Just add an increment to the th th = linspace(0,2*pi,10) + rotation_angle ;

10 months ago | 0

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Multiply and shift ?
R = ifftshift(xcorr(x,'unbiased'))

10 months ago | 1

FFT Peak at Zero
Apply fftshift to your spectrum to see it with DC centered in the plot. x=csvread('230.csv',1,0); rollSpectrum=ffts...

10 months ago | 2

Solving compound linear optimization problem
I've never heard of a compound optimization problem but maybe this will help https://www.mathworks.com/discovery/multiobjective...

10 months ago | 1

Question

Is this a bug in lsqcurvefit?
When I run this simple test of lsqcurvefit (this is R2018a), I get errors. opts=optimoptions(@lsqcurvefit,'SpecifyObjective...

10 months ago | 0 answers | 1

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invalid syntax at '=' . A '(' might be missing a closing ')'
if (f == 0) and same thing in this line if(~isinteger(NMAX) || NMAX == 0 || ischar(NMAX))

10 months ago | 0

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How to save vectors with different lengths
One way is to use cell arrays C={1,[2,3],[4,5,6,7]}

10 months ago | 0

fitting 2 variable function to (x-1) form
My fit is completey messed up, and it looks nothing like the data. It shouldn't look like the r and eta data, because that's no...

10 months ago | 1

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Image registration of two different imaging moralities
That sounds like a very unusual registration problem, but if you have a model that relates the CT image to the microscopy image,...

10 months ago | 0

How to preprocess this image.?
PI=I; PI(~CH_objects)=255; imshow(PI); title('Preprocessed Image');

10 months ago | 0

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how to extract the first three elements present in each row of a matrix
B=A(:,1:3)

10 months ago | 0

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max min optimization using inbuilt MATLAB function fminimax
The outside negative sign only matters if you care about calculating the optimal fval [x,fval] = fminimax(------) fval=-fval; ...

10 months ago | 1

Unable to perform assignment because the left and right sides have a different number of elements.
k(i) = (4/pi) * (1/(2*i+1)) * sin( ((2*i+1)* pi.* t(i))/T );

10 months ago | 1

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Fit multiple sets of data with same function model to get optimal global parameter using lsqcurvefit

10 months ago | 0

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Not Enough Input Arguments in fsolve
function myProblem options = optimset('display','off') x = fsolve(@fun,[2 3.5],options) X = x(1) Y = x(2) fun...

10 months ago | 0

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My textbook gave me code that has an error I don't know how to fix
alt and flag must be scalars.

10 months ago | 0

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Reducing a vector size when it is being updated in a loop
for h=5:-1:1 %code to load all script files if h==1 A = dlmread("Trial 1"); elseif h==2...

10 months ago | 1

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How can I go back to the beginning of my program first line by a command?

10 months ago | 0

Classdef get methods: allowing get indexing into an array of length either (1x1) or (Nx1).
You would need to overload subsref, e.g., methods function out=subsref(obj,S) if S(1).type=="." && S(1).subs{1}=="A" &&...

10 months ago | 0

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