gic.zip_Intensity_gamma_gamma correction_gic_intensity correctio

clc clear all close all I1=imread('yaleB15_P00A+010E-20.pgm'); I2=imread('yaleB15_P00A+060E-20.pgm'); I3=imread('yaleB23_P00A+000E+90.pgm'); I4=imread('yaleB23_P00A+005E+10.pgm'); J11=imadjust(I1,[],[],0.5); J12=imadjust(I1,[],[],2.2); J21=imadjust(I2,[],[],0.5); J22=imadjust(I2,[],[],2.2); J31=imadjust(I3,[],[],0.5); J32=imadjust(I3,[],[],2.2); J41=imadjust(I4,[],[],0.5); J42=imadjust(I4,[],[],2.2); subplot(4,3,1); imshow(I1); title('Original Image (a)'); subplot(4,3,2); imshow(J11); title('Gamma factor=0.5'); subplot(4,3,3); imshow(J12); title('Gamma factor=2.2'); subplot(4,3,4); imshow(I2); title('(a) with different illumination'); subplot(4,3,5); imshow(J21); title('Gamma factor=0.5'); subplot(4,3,6); imshow(J22); title('Gamma factor=2.2'); subplot(4,3,7); imshow(I3); title('Original image (b)'); subplot(4,3,8); imshow(J31); title('Gamma factor=0.5'); subplot(4,3,9); imshow(J32); title('Gamma factor=2.2'); subplot(4,3,10); imshow(I4); title('(b) with different illumination'); subplot(4,3,11); imshow(J41); title('Gamma factor=0.5'); subplot(4,3,12); imshow(J42); title('Gamma factor=2.2');