calculate the area of the black colored objectes in a image

hi, sorry to bother you but it seems i have an issue over here but before i start talkin about that issue i have to say that i dont use matlab that often this is why i am still unable to solve this issue and i hope u can help me to solve it. so the problem that i am having is i got this image whit only black and white colors aka "binary image" from my desktop and i am trying to calculate the area of black colored objects and i also wanna calculate the area of the whole image,i tried solving this problem by seeing some community posts but its seems i am unable to solve it and this is why i requested your help

Answer 1

[Walter Roberson]

stats = regionprops(YOUR_BW_IMAGE, 'Area');
areas = [stats.area];
total_area = sum(areas);

[Mathew]

I am still unable to find it even tho i copied the same commands

I found the total area of the image so what about the black objects areas? and i think its in pixel

[Walter Roberson]

stats = regionprops(~YOUR_BW_IMAGE, 'Area');
areas = [stats.area];
total_area = sum(areas);

[Mathew]

[Walter Roberson]

stats = regionprops(~IUKM, 'Area');
areas = [stats.Area];
total_area = sum(areas);

Answer 2

[Image Analyst]

See my Image Segmentation Tutorial in my File Exchange:

Image Analyst's File Exchange

It's a generic, general purpose demo of how to threshold an image to find blobs, and then measure things about the blobs, and extract certain blobs based on their areas or diameters.

And see my Answer in your other related question: https://www.mathworks.com/matlabcentral/answers/2120006-calculating-the-area-of-the-black-objects-in-mm2#answer_1459651