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.
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Walter Roberson
2013년 4월 15일
That one does not have any outlined area or any red dashed circle, so I cannot tell what needs to be extracted.
Image Analyst
2013년 4월 15일
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.
답변 (3개)
Image Analyst
2013년 4월 10일
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
2013년 4월 15일
편집: Cedric
2013년 4월 15일
>> 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
2020년 6월 21일
% create pre-processed datastore
imdb = imageDatastore(db_path,...
'IncludeSubfolders',true,...
'LabelSource','foldernames',...
'ReadFcn',@readCBIR);
Does anything wrong in this command
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