Clear Filters
Clear Filters

How can I find maxima and minima points of intensity plot of one row of an image?

6 views (last 30 days)
I want to plot intensity of single row of an MRI image, for that firstly I wrote -
i=dicomread('mri_7.dcm');
imshow(i)
improfile
from this I got intensity plot of any row or column. Now I want to find maximum and minimum values of that plot.So,please help me to get solution of this obstacle.
Thank you

Accepted Answer

Image Analyst
Image Analyst on 6 Dec 2013
Don't use i (the imaginary variable) as an image name or loop counter.
Try this:
oneRow = grayImage(myRow, :);
% Find the min and max
[minGL, indexOfMin] = min(oneRow)
[maxGL, indexOfMax] = max(oneRow)
See my demo, test.m, attached below in blue, which will generate the following figure.
  2 Comments
Samidha
Samidha on 8 Dec 2013
thank you very much for your reply.. I get max nd min value in numerical form, I don't find profile plot which i want. I write- grayImage=dicomread('mri_7.dcm'); oneRow = grayImage(111, :); % Find the min and max [minGL, indexOfMin] = min(oneRow) [maxGL, indexOfMax] = max(oneRow)
minGL =
0
indexOfMin =
1
maxGL =
105
indexOfMax =
97

Sign in to comment.

More Answers (1)

sixwwwwww
sixwwwwww on 6 Dec 2013
Edited: sixwwwwww on 6 Dec 2013
you can use
max(i) % to find maximum value in a row/column vector
and
min(i) % to find minimum value in a row/column vector
sharing image to give specific solution will be further helpful

Categories

Find more on Image Processing Toolbox in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!