area calculation of black part

hello,

i have to calculate the area of black part how can i do it and also which image should i use green or binary?

[Walter Roberson]

numel(binary)-nnz(binary)

Answer 1

[KSSV]

A crude/ rough estimate

I = imread('binary2.jpg') ; 
[y,x] = find(I<=180) ; 
iwant = nnz(x) ; 

imshow(I)
hold on
plot(x,y,'.r')

[KSSV]

Smruti Khobragade commented:

Thankyou sir it worked.