Gray Level Slicing in MATLAB

 Gray Level Slicing: High-light specific range of gray values without background and with background.

       Read kidney.tif file. Enter lower and upper threshold value from the user. Apply gray level slicing with and without background. Display the result.

 CODE:

clc; clear all;

i=imread('kidney.tif');          % should be graylevel image

j=double(i);

k=double(i);

[row,col]=size(j);

T1=input('Enter the Lowest threshold value:');

T2=input('Enter the Highest threshold value:');

for x=1:row            

    for y=1:col        

        if((j(x,y)>T1) && (j(x,y)<T2))

            j(x,y)=i(x,y);

            k(x,y)=255;

        else

            j(x,y)=0;

            k(x,y)=0;

        end

    end

end

subplot(311), imshow(i), title('Original image')   

subplot(312), imshow(uint8(j)), title('Graylevel slicing with background')

subplot(313), imshow(uint8(k)), title('Graylevel slicing without background')

OUTPUT RESULT: