A simple question on image processing
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Hello every body, I have uploaded a simple image on the website:
I would like to extract the outlined portion only. I just startted learning MATLAB. Could any body suggests how I can extract that part of image?
Thanks.
5 commentaires
Walter Roberson
le 15 Avr 2013
That one does not have any outlined area or any red dashed circle, so I cannot tell what needs to be extracted.
Image Analyst
le 15 Avr 2013
Basically about half way out the blob, there is a thin, faint, noisy, interrupted "ring" of dark pixels. That is what she wants to find.
Réponses (3)
Image Analyst
le 10 Avr 2013
What do you mean by "extract"? Do you mean you want an image with everything outside the circle blackened? Do you want the bounding box of it cropped out to another, smaller image? Do you just want a list of all pixels inside the circle in a 1D list?
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Cedric
le 15 Avr 2013
Modifié(e) : Cedric
le 15 Avr 2013
>> As I am not familiar with MATLAB, I find difficulty in using the MATLAB functions.
At this point, I would recommend the official documentation available here. If you are already familiar with another language, you would spend probably no more than a long day full time, which would prevent you from being constantly pulled back by lack of knowledge about MATLAB basics (which are not trivial, especially if you have a challenging application to develop). I would recommend the following actually:
Under MATLAB, you could get..
- PDF labeled "MATLAB Primer" and study chapters 2 and 5.
- PDF labeled "Mathematics", and train to have a good mastery of chapters 1 and 9.
- PDF labeled "Programming Fundamentals" and have a look at the table of content so you can use it as a reference later.
There would also be the User's Guide under Image Processing Toolbox, which contains a significant amount of examples and illustrations.
Ayshath Afra
le 21 Juin 2020
% create pre-processed datastore
imdb = imageDatastore(db_path,...
'IncludeSubfolders',true,...
'LabelSource','foldernames',...
'ReadFcn',@readCBIR);
Does anything wrong in this command
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