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Aspiring bioengineer with an interest in image processing.

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You were taking the complex conjugate of |z|. Be careful whenever you use |'| to transpose in Matlab! function z = complex...

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Answered 4 years ago

There is a function to draw such an ellipse in Matlab if you have the PDE toolbox, |<http://www.mathworks.com/help/toolbox/pde/u...

This is probably an easy solution, but I cannot figure it out. I have an |m x m cell array| where each cell contains a |1 x ...

3 Answers

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Asked 4 years ago

*UPDATE:* <http://dl.dropbox.com/u/56764179/data_dump.mat data_dump.mat> unique(diff(unique(endpts_labeled))) ans = ...

If you have the Video and Image Processing Blockset, use the 2D median filter and change the "Neighborhood size" to 1xN or Nx1 (...

New Code: %% Calculate Tortuosity disp('Calculating tortuosity of large segments'); V = thin8-imdilate(cr...

2 Answers

% Generate random pictures PicNum = 5; PicSize = 100; J = zeros(PicSize,PicSize,PicNum); % Always good to preallocate...

Determines if branchpoints of a skeleton are of 3 (Y) or 4 (X) bit connectivity.

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4 years ago

Try zooming in in the figure window, the points are probably still there, just not visible when zoomed out due to resizing/resol...

Perhaps there is a method of which I am not aware, but I would like to be able to track questions that I commented on and not ac...

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I am trying to use the label matrix feature of |bwdist|, but am encountering a problem. *Instead of returning the linear index ...

I have a logical image with many 1-px wavy curve segments and I am trying to fit a curve to these segments to find the orientati...

I am using the function _imbothat_ as part of a larger image processing algorithm and it works great for what I need (I found th...

1 Answers

I am trying to use BWLabel to label 1 pixel width line segments. These lines are not straight so I am using a connectivity of 8...

Check out the <http://www.mathworks.com/matlabcentral/fileexchange/1736-hatched-fill-patterns "Hatched Fill Patterns" FEX Submis...

I = imread('Brain.jpg'); Tumor = imread('Tumor.jpg'); ThresholdValue = 10; % You'll want to find the best value mas...

So you have a 1 x 20 vector you want to fill off of knowing just the first value and each previously value determines the next? ...

<http://www.mathworks.com/matlabcentral/fileexchange/7212-asort-a-pedestrian-alphanumeric-string-sorter FEX Submission "ASORT: A...

In addition to IA's answer, this seems to be a question requesting a novel idea of how to differentiate tumor types accurately u...

I would recommend implementing an "open code" and "close code" tag system similar to the other features in the comment section |...

x = [0;0;2;2;1;0;0;2;0]; y = [43;43;34;34;34]; Combined{1} = x; Combined{2} = y; You need to use cells |{}| in order...

I would pre-allocate A before the for loop by using A = zeros(Rows,Cols); %Creates matrix of 0's % This will also act to c...

How about a link on the left hand navigation for FAQ and posts like Walter's on tags?

do you have the image processing toolbox? if so: I = imread('imagename.extension'); The result will be a 2- or 3-D matri...

You're not specifying the row of A that you are writing the data to, so each loop it just places [PVtech(i,:) WTtech(i,:)] into ...

<http://www.mathworks.com/help/toolbox/images/ref/deconvlucy.html doc deconvlucy> the documentation mentions similar functions....

What is the value of having a *"Home"* and *"Search"* link on the navigation panel (upper left hand side) if both link to the sa...

Thomas' answer is faster, but here is my go: A = [2 4 NaN 7 9 NaN NaN NaN 32 NaN NaN 8]; idx = isnan(A); [B n]= bwlab...

I am guessing you are using a DICOM file since this is a CT image? If so, use Image = dicomread(filename); (Help page ...

A =[1,NaN,2,3,NaN,4,5,NaN,6,7,NaN,NaN]; A(isnan(A)) = [];

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