1. 讀入圖片、rgb轉灰度、改變圖片尺寸、保存圖片
f=imread('1.jpg');
figure
imshow(f)
title('原圖')
gf=rgb2gray(f);
figure
imshow(gf)
title('黑白圖')
newgf=imreszie(gf,[540,960]);
figure
imshow(newgf)
title('960*540的黑白圖')
newf=imreszie(f,[540,960]);
figure
imshow(newf)
title('960*540的彩色圖')
imwrite(newgf,'小黑白圖.jpg')
2. imadjust (![c=r^{\gamma }]()
)
)
j1=imadjust(f)
j2=imadjust(f,[0.2,0.8],[0.1,0.9])
j3=imadjust(f,[0.2,0.8],[0,1],25)
j4=imadjust(f,[0.2,0.8],[0,1],0.5)