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how to find index in matrix and average data ?
You can try the following, instead of "finding" the locations, which will be the indices, just use the locations like this: sst...

2 years ago | 0

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Answered
How to make a loop inside a loop?
Difficult to answer without more context, but I suspect that the error is not related to the loops but something else. There are...

2 years ago | 0

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Hough transform incorrectly identifying vertical line segments
Ok, 2 things, you are first comparing and then subtracting, which may be counteracting, you could calculate hough directly like ...

2 years ago | 0

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Hough transform incorrectly identifying vertical line segments
Have you tried inverting the intensities of the image? As it is, white is the main element and that will be difficult to obtain ...

2 years ago | 0

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Why are title and label not working on histogram?
You are using the commands incorrectly, by writing title = ('Temperatures @ Top') you are creating a new variable called title w...

2 years ago | 0

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Answered
Change variable name in plot
As mentioned before, this is not the best way to handle your data, BUT you are where you are, so to be able to use the names run...

2 years ago | 0

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Answered
2D color map change the input of y axis
Hello There are 2 ways to change the values of the y axis, first is to change the values when you plot. I do not have your fi...

2 years ago | 0

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Answered
Asignar matriz automaticamente.
Hola Primero te recomendaria escribir en ingles para aumentar la posibilidad de que respondan las preguntas. Segundo, para que ...

2 years ago | 1

Answered
Filter out small dust in image!
Where exactly are the rocks that you want to count? There is a lot of green but I cannot immediately see any rocks.

2 years ago | 0

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Bar Plot Legend and Axes
Hi First, to plot the subplots together, you need to grab the handles of each axes, i.e. figure h1=subplot(141); h2=subplo...

2 years ago | 0

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Smoothing colormap of plotted image
If you only want to smooth the final data, you can try with filters, e.g. imagesc(medfilt2(abs(Y),[5 5 ])) imagesc(imfilt...

2 years ago | 1

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Answered
How to calculate the centroid / center of a patch?
The data X,Y must have been previously calculated from some raw data, say a thresholded figure, it is from that data you can eas...

2 years ago | 2

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Error of the following code : "Array indices must be positive integers or logical values."
Not very clear, what are length_ijk and index_ijk? in the files you have added, miu has 262144 values, ind has 77 and freq has 6...

2 years ago | 0

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Not able to write the image by reading xcel files generated , getting error of data type as shown in picture attached. Anybody please help.
This is not very clear, it would be better to copy the code instead of figures and provide a sample file so that the case can be...

2 years ago | 0

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How to add colormap on an image?
I guess that this is a 2 step question, you want to add a colormap and then export as a png or jpeg, try the following, read an ...

2 years ago | 0

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What is a good performance metric for pixels classification tasks
One good metric is the Jaccard Index, or the Intersection over Union. What this metric does is to divide true positives over th...

2 years ago | 0

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Answered
Does anyone know how to create graphics of the same size?
Hello You can use the command "print" https://uk.mathworks.com/help/matlab/ref/print.html?searchHighlight=print&s_tid=srcht...

2 years ago | 0

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double data type in image processing
Another easy way around this is to divide the doubles by 255 X=imread('cameraman.tif'); %read the cameraman image X=doubl...

2 years ago | 1

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Random shuffle of vector elements
This can be easily done by addressing the vector correctly. First you need a random order to shuffle your elements. You can do t...

2 years ago | 1

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how can i use a Gaussian gradient routine for remove the out of focused section in image processing
You could refine your processing using bwlabel to assign unique labels to the regions you have already detected. Then use region...

3 years ago | 0

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Answered
A ’BGR’ image.
Hello: First, changing channels is very simple you just need to change the third dimension of the image, e.g. image1=imread('p...

3 years ago | 1

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Answered
I cannot save matlab editor, the .m file.
I guess that you must have used some special characters like accents, have you copy-pasted something into the editor?

3 years ago | 0

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Detecting a stain in a texture
This would not be that difficult, marble = imread('https://upload.wikimedia.org/wikipedia/commons/f/f3/SierraXenolith.JPG'); ...

3 years ago | 0

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aToD
Analogue To Digital Conversion

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Answered
I need to find the phase of the images.
Hello The image that you show could be that of a phase, but it is hard to judge from what you are showing. In any case, here is...

3 years ago | 4

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unshow unnecessary intervalls in a histogramm
Hello: What you need to do is rather simple if you capture the values of your histogram, instead of using hist to display dir...

3 years ago | 0

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Mean computaion in matlab
If your data is in a matrix of dimensions [samples x 3], e.g. data=[lon1 lat1 value1; lon2 lat2 value2; lon3 lat3 value3; ...

3 years ago | 0

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Answered
convolution of 2 signals
You are confusing functions. conv is used to obtain the convolution, subplot is used to divide a figure and then plot inside eac...

3 years ago | 0

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Compute convolution y[n]=x[n]*h[n]: x[n]={2,0,1,-1,3}; h[n]={1,2,0,1}
What exactly is your question?

3 years ago | 0

Answered
How can I extract the GLCM features from each nucleus of mircroscope blood smear image?
One way to do this would be to crop each region, once you have found each object, you can use regionprops to determine the extre...

3 years ago | 0

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