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img = double(im2bw( imread('xueguan.png') )); % Ìí¼ÓÄãµÄͼƬ
img(512:513,:) = 0; % ¼Ó¶îÍâÁ½ÐУ¬½ö½öÊÇΪÁËÄܱ»3Õû³ý
imgheight = size(img,1)/3;
for i = 1:3
    subplot(3,1,i);
    img_sub = img((i-1)*imgheight+1:imgheight*i,:);
    pix_wht = numel(find(img_sub(:)==1)) / numel(img_sub(:)); % ¼ÆËãѪ¹ÜÏñËØµã Õ¼Õû¸öͼƬµÄ±ÈÀý
    imshow(img_sub)
    title(round(pix_wht,4))
end

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wenxi2016

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2Â¥: Originally posted by ²»¾õ´ºÉî at 2017-09-22 13:30:27
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2Â¥: Originally posted by ²»¾õ´ºÉî at 2017-09-22 13:30:27
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wenxi2016

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5Â¥: Originally posted by ²»¾õ´ºÉî at 2017-09-22 16:04:20
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wenxi2016

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ÒýÓûØÌû:
5Â¥: Originally posted by ²»¾õ´ºÉî at 2017-09-22 16:04:20
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ÒýÓûØÌû:
7Â¥: Originally posted by wenxi2016 at 2017-09-22 16:14:13
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wenxi2016

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8Â¥: Originally posted by ²»¾õ´ºÉî at 2017-09-22 16:28:21
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