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Constantino Carlos Reyes-Aldasoro


Last seen: 16 days ago

City, University of London

112 total contributions since 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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Answered
How to subplot figures reopened from .fig files correctly when they containing images?
What you have to do is to grab each element by its handles, to grab the handles of a figure you use >> h0=gcf; then you can ac...

17 days ago | 0

Answered
Conv() not working
Could it be that you tried with uppercase C as in Conv and not with lower case as in conv? >> conv([1 1],[2 2]) ans = ...

17 days ago | 1

Answered
I want to generate spherical from three given arrays, please help me out.
We would need a better explanation of exactly what you want, but I think that the main issues are: 1) you are using sph2cart ins...

2 months ago | 0

Answered
a MATLAB function that calculates area of segmented thermal image
Hello This may be possible but cannot help without looking at the image and the area to be segmented.

2 months ago | 0

Answered
How to include a vertical scale besides of a polar plot ?
This is easy, but you need to use handles if you want the figure to look like the one you show. And also, you have to think of t...

3 months ago | 0

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Answered
How to create empty XYZ image matrix
In addition to the above, you can also consider zeros emptyMatrix = zeros(x,y,z); And then you can add values into that ma...

3 months ago | 0

Answered
growing bubbles with a predetermined radius in a given volume?
There is too little information to answer this question properly. Do you mean non-overlapping bubbles? and that they contact eac...

3 months ago | 0

Answered
How to split a 3d matrix into sub-3d matrices?
There is not enough information to be certain about your question, but by addressing your matrices you can create submatrices li...

3 months ago | 0

Answered
Image shows with imshowpair, but not with imshow
You have two options, use subplots subplot(121) imagesc(midAirImage) subplot(122) imagesc( bwImage) Alternatively you can...

3 months ago | 0

Submitted


Cell Migration in Scratch Wound Assays
Analyse and measure migration in Scratch Wound Assays

3 months ago | 3 downloads |

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Answered
Methods for analysis of plots in image processing
This seems rather simple. First, project your data to a single dimension, say your image is called data_2D, data_1D = sum(dat...

4 months ago | 0

| accepted

Answered
how to remove spot from an image.?
You should look for the extreme values of the intensities. The dark regions of the image are not as dark as the circle, so find ...

4 months ago | 0

Answered
Multiple contour plots with one colorbar
Hello I think you have asked a similar question, or at least the answer is similar and it is to use the handles of each element...

5 months ago | 0

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Answered
Segmentatio of ecg signal
Hello As mentioned previously, it is not possible to answer without more knowledge of the case itself. But I can point you to t...

6 months ago | 0

Answered
Fixing the appropriate threshold level to binarize a droplet image where the droplet area is found to vary with the threshold
Dear Anjan There is no exact way to decide the threshold. To illustrate this, I have taken a profile line to illustrate the i...

6 months ago | 0

Answered
How can I change data directly from the plot ?
To complement what Mehmed has just posted. It would be even easier if when you first create your figure, you save in handles all...

6 months ago | 2

Answered
How can i find the fundamental frequency of the signal using the autocorrelation function?
Have you considered using the Fourier Transform to convert from time domain to Frequency domain? There you can find the highest ...

6 months ago | 0

Answered
Not enough input arguments. Help?
Your problem may be that you are calling your function without the required input parameters your function requires one paramete...

7 months ago | 0

Answered
Why am I getting Nan values?
Hello There are several issues, but primarily about the way you use your code. 1) The code as it is is very long and convol...

7 months ago | 0

Answered
Need help with string counting
Perhaps the error is here: if strfind(str,'A') dydis = dydis + length(A); end You are detecting...

8 months ago | 1

Answered
Doubt in MATLAB coding.
This is a bit hard to solve without knowing more of the problem. What I would do is to break down the problem and analyse each s...

8 months ago | 0

Answered
How can I extract features about image texture?
Hello The basic concept of texture is that you will transform your image, which has a certain texture, to a different space, wh...

9 months ago | 0

Answered
what is a method for segmentation texture?
Hello The basic concept of texture is that you will transform your image, which has a certain texture, to a different space, wh...

9 months ago | 0

| accepted

Answered
Create empty rows in a cell, based in a condition
Hello I do not know why there should be rows that are skipped, unless you are copying and pasting and something goes wrong. I h...

9 months ago | 0

Answered
Reference to non-existent field 'a'.
This error is arising from trying to read a field from a structure, when the field is not existing for example >> example.a = 1...

9 months ago | 0

Answered
How to perform morphological reconstruction by dilation?
Dilation is rather simple, but perhaps there are more steps to what you want: f9_dil = imdilate(f9,strel('diamond',3));

9 months ago | 0

Answered
How to perform morphological reconstruction by dilation?
Dear Krishna I have seen several of your questions, I think that you would greatly benefit if you would study some Matlab and...

9 months ago | 0

Answered
How to extract features from candidates?
First you need to label your objects with bwlabel, e.g. labelled_image = bwlabel (original_image); that will return your same ...

9 months ago | 0

| accepted

Answered
finding length of scale bar from matrix form of image
As said before, not too difficult if you know what you need. Here is the code % Read the image imageWithScaleBar = imread('/...

10 months ago | 0

| accepted

Answered
finding length of scale bar from matrix form of image
This should be easy by thresholding for the levels expected (black will be low in the three RGB channels, but not necessarily 0)...

10 months ago | 0

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