How to count image binary

Hi all

if i have binary image, how to calculate the white pixel, and black pixel?

[darova]

[Adam Danz]

Ha! Funny response, darova.

[mohd akmal masud]

sorry, im newbie in matlab.

i want to calculate the white pixel in some location. i have row and colom

[Adam Danz]

Do you mean you want to calculate the location of a single white pixel? Or you want to determine if a given coordinate is a white pixel? Maybe a picture will help.

[mohd akmal masud]

Hi Adam, i want to calculate no of white pixel in red circle. let say the area row is 100-130, column 110-140. Please help me

Answer 1

[KALYAN ACHARJYA]

Let's say input binary image is image_bw

result=bwareafilt(image_bw,1,'Largest');
count_w=sum(result);
fprintf('The white pixel count is: %d',count_w);