Get the intensity of an immage

Hi I have a polarized immage and it is in gray scale, i want tu select a region in the immage en get the avrage of intensity. I know that exist a command "regionprops" that help for my problem.

I link the immage that I'm using, I would be very grateful if someone would help me

Answer 1

[Walter Roberson]

imcrop() to select a region and get backed the cropped image.

mean2() to get the average intensity of the cropped region.

regionprops() is not useful for this purpose.

[valerio auricchio]

If you have time can you write the code?

I'll gave you best vote and solution answer

[Walter Roberson]

img = imread(filename);
cropped = imcrop(img);
avg_intensity = mean2(cropped);

[valerio auricchio]

THXXX A LOTTTT, but after the execution of the code "cropped = imcrop(img);" i select the area of intrest" does not go ahead with the execution

[Walter Roberson]

imcrop() will display the image you pass in. You click on the image and drag to mark out a box. When you are satisfied, you right click and select "Crop image".