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Find summation of white pixel of detected rectangle from a binary iamge??

4 次查看（过去 30 天）
Rajat
Rajat 2014-5-6
关闭： MATLAB Answer Bot 2021-8-20
im=imread('8.jpg'); %read above picture
im=im2bw(im,.555);
[row,col]=size(im);
area=(row*col)*.1;
stats = regionprops(im);
imshow(im);
hold on;
density=0;
for i = 1:numel(stats)
rect = [stats(i).BoundingBox];
count = 0;
if(rect(3)*rect(4)>area)
for j= fix(rect(1)):fix(rect(3))+fix(rect(1))% for every pixel of detected rectangle
for k= fix(rect(2)):fix(rect(4))+fix(rect(2))
if((j<=row && j>0 && k<=col && k>0)&&(im(j,k)== 1)) %count white pixel
count =count +1;
end
end
end
density=count/fix(rect(3))*fix(rect(4)); %count sum of white pixel/area
disp(count);
disp(density);
textRect =i;
rectangle('Position', stats(textRect).BoundingBox, ...
'Linewidth', 1, 'EdgeColor', 'r', 'LineStyle', '--');
f = getframe(gca);
im = frame2im(f);
imwrite(im,'8_rect.tif');
end
end
But i didnt get the appropriate value of the density of that detected area,it should be <1.
Can any one please help me to find out the pixel density of that detected rectangle??
Thank You in Advance.

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回答（1 个）

Rajat
Rajat 2014-5-6
There are lot of image like in SignBoard,Advertisement,Book which contain text and I want to classify the category of those image,so initially I classify based on detected rectangle and its pixel density.If you have any better idea please suggest me.

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