Image processing of an echocardiogram image

Good evening,

in the echocardiogram image below, i wish to extract data from it.

How to extract the area of the coloured section (jet area) and the smallest diameter of the jet area?

thank you

Answer 1

[Bjorn Gustavsson]

Well, for this homework task you'll get a hint:

In the gray-scale area the R, G and B-layers of your image all have the same values.

HTH

[Zo]

thank you for your answer im new to Matlab.

if i were to convert it to the grayscale, i would be able to extract those values that i want? if so how do you suggest?

[Bjorn Gustavsson]

No, my idea was for you to look for pixels where the intensities in the R G and B layers were not identical. Something like:

R = rgb_img(:,:,1);
G = rgb_img(:,:,2);
B = rgb_img(:,:,3);
gray_img = (R==B)&(G==R);
jet_img = 1-gray_img;

ought to give you a binary image jet_img with 1 in the jet-coloured region and 0 in the gray-scale region.

HTH

[Zo]

ohhh okay i understand. thank you very much!