[x,map]=imread('exoHyCdz.bmp');
gray_fg=rgb2gray(x);   %轉灰階
BW=im2bw(x,map,0.9);   %二值化
figure                 %顯示圖片 
subplot(121)
imshow(gray_fg)
subplot(122)
imshow(BW)

引言: Hello,7y7y7 我試過妳的程式碼,並沒有問題啊! 下面的顯示圖片程式碼妳可以參考看看...

 
[x,map]=imread('exoHyCdz.bmp');
gray_fg=rgb2gray(x);   %轉灰階
BW=im2bw(x,map,0.9);   %二值化
figure                 %顯示圖片 
subplot(121)
imshow(gray_fg)
subplot(122)
imshow(BW)

The first step toward proving things for yourself is to understand how others have done it before!