count the number of objects in the eight.tif.

Can any one help me to count the number of objects in the eight.tif.

I tried this code but it did not work!!

B=imread('eight.tif');
BWl=im2bw(B);
imshow(BWl);
eul=bweuler(BWl,8);
EDU>> eul=
 eul=
     |
Error: Expression or statement is incomplete or incorrect.

Answer 1

[Sabarinathan Vadivelu]

Check this out

    I = imread('eight.tif');
    imshow(I)
    level = graythresh(I);
    BW = im2bw(I,level);
    imshow(BW)
    CC = bwconncomp(~BW);
    CC.NumObjects

[Sabarinathan Vadivelu]

bweuler(BW,8)

[Sabarinathan Vadivelu]

If this fulfills your needs, then please accept the answer.

[Arturo Jr. Ongkeko]

Dear @Sabarinathan Vadivelu,

When I run your code, the number of objects it indicated is 6. But the eight.tif has 4 coins right, so we are to expect the count to be 4?

I tried another approach using bweuler but it also counted 6 (see below). I guess I just want to understand the rationale as to why are we getting 6 instead of 4.

Thanks,

Art

% read image and display
img=imread('eight.tif');
imshow(img)
%transform to bw and display
img_bw=im2bw(img,0.6);
figure,imshow(img_bw)
%inverse of the bw/binary
img_complement=imcomplement(img_bw);
%filled the holes in the coins
img_filled=imfill(img_complement,'holes');
%count object using bweuler
bweuler(img_filled)