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# Constantino Carlos Reyes-Aldasoro

### City, University of London

Last seen: 5 jours il y a Actif depuis 2016

Senior Lecturer in Biomedical Image Analysis at City, University of London. Huge Matlab fan, wrote the book "Biomedical Image Analysis Recipes in MATLAB: For Life Scientists and Engineers" published by Wiley-Blackwell.

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Can I overlay a large number of image?
Hello You can always overlay things by summing them, say your data is a 3D stack and each layer is one of your frames, a ...

13 jours il y a | 0

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Trying to get an answer for 'a' - while loop??
Run the code! a=0 while a<5 a = a + 2; end disp (a)

13 jours il y a | 0

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How to fix this error : Not enough input arguments.
Hello Most probably you are not calling the function with all the necessary input parameters, look at this example in which t...

13 jours il y a | 0

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Is there any better alternative of four nested loops?
Hi In Matlab, if you think in matrices you can avoid many many many loops. For example, if you want to find if a column of a ce...

environ un mois il y a | 0

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How to split the last 4 elements in a column into a new column?
In Matlab is better to think of matrices than to think of columns (like you would do in Excel for instance), so think of your fi...

environ un mois il y a | 0

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Using Matlab compiler, accents are replaced by question marks.
try using the ascii code for the letters that you want to be displayed, e.g. disp(strcat('d',233,'terministes'))

environ un mois il y a | 0

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How to visualise results of regionprops3 function?
What regionprops will do is to calculate the metrics for each of the elements in your data, and you can then use these to select...

environ 2 mois il y a | 0

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Shifting a specific part of the graph

2 mois il y a | 0

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How to create two-dimensional boxplots
Have a look at this code: https://uk.mathworks.com/matlabcentral/fileexchange/68006-boxplot3d-create-three-dimensional-boxplo...

2 mois il y a | 0

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Error with plot command
I do not think this is a problem of plot, but rather that your variable has only 1 value and you are addressing a higher value. ...

2 mois il y a | 1

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why are my programs treated as function?
Very very hard to help without the file itself, and without knowledge of what V is. I ran that line in Matlab online and worked ...

2 mois il y a | 0

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How can I make a boxplot match at 0 with another plot?
A workaround to solve your problem is to call the boxplots with zero values in between your actual data. E.g. plot([1 2 3 4 5...

2 mois il y a | 0

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Why there are high frequency spikes in the instantaneous frequency variation vs time curve of a faulted phase current ?
It is very different to answer this question on the abstract, please add more details and figures preferably to be able to help....

2 mois il y a | 0

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how to slice 3d .fig file?
If I understand correctly, what you want is a slice of your 3D data, and add that to your figure (say one surface with one sl...

2 mois il y a | 1

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selecting area on a image and Tracking the same area in the next subsequent images automatically
Ok, the first part of this problem is rather simple, if I understand correctly, you want to select a region of interest in one i...

2 mois il y a | 0

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How do i remove an outlier?
Use a moving filter, in your case, the best would be to replace each value by the median value of a neighbourhood, that is if yo...

2 mois il y a | 0

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Generate code for randomly oriented short fiber RVE?
You are not running your loops correctly. If you ident your code (control-i) you can see better: for i=1:1:N while 1 ...

2 mois il y a | 0

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Can we move a vertex in voronoi diagram?
Yes, quite easy: X=[1 2 1.1 1.3 1.4 1.5 1.3 1.2 1.8 2.1 2.2]; Y=[1.5 1.3 1.5 1.8 1.4 1.6 2.5 2.3 2.4 1.1 1.8]; vorono...

3 mois il y a | 0

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Can LBP be used for flame analysis?
Assuming that LBP stands for Local Binary Patterns, I would say it depends. If you already have the flame located and segmented,...

3 mois il y a | 0

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How to caluclate centroid of a voronoi cell of a voronoi diagram.
This is not a trivial problem especially because the voronoi algorithm does not give you a series of closed polygons, i.e. chang...

3 mois il y a | 0

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How to detect cricket wide ball in video using Matlab .
It is not simple to offer any help here. Any image processing or video processing depends totally on the images or videos, which...

3 mois il y a | 0

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I need help to make graphs please
It is easier to help for specific questions, i.e., you tried something and it did not work. The way you have phrased this is mor...

3 mois il y a | 0

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Splitting a color image into sub-images only displays the yellow color
From the images it seems that your channel (the yellow one) is saturated. Have you tried to display the three RGB channels is se...

3 mois il y a | 0

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How can i do Orthogonal and Log transformations in image processing
Hello Many of the steps that you want to do can be done with one command of the image processing toolbox https://uk.mathwork...

4 mois il y a | 1

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I have a problem with movie2avi in a code of 2010
Very hard to help without more details, have you tried using breakpoints along the code to stop and see what is going on? Have y...

4 mois il y a | 0

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how to open .mat data in to excel sheet
You better export your data from Matlab into excel directly: https://uk.mathworks.com/help/matlab/import_export/exporting-to-ex...

5 mois il y a | 0

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Change direction of the Y-axis for a single figure
What you need is to rotate, try imrotate https://uk.mathworks.com/help/images/ref/imrotate.html?searchHighlight=imrotate&s_ti...

5 mois il y a | 0

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How do I clear the gradient of an image across pixels? (Image processing for the intensity of fluorescence)
Hello I am afraid the question is not very clear. What do you mean by "doesn't have a clear gradient across the pixels"? This s...

5 mois il y a | 0

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How can I smooth a surf with many spikes?
If you just want to smooth the values, you could use a filter, from a small uniform filter like [1 1 1;1 1 1;1 1 1]/9 to a Gauss...

5 mois il y a | 0

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compare edge detected images
It is a bit difficult to help without context and illustrations. If you could add some figures it would be easier to help.

6 mois il y a | 0