Matlab - size of image

Question

Checking size of an image in matlab using size(I) , where I expected the size to be 8X8 , I got the following:

size(I)

ans =

 8     8     3

What is 3 here? And, is my image considered an 8X8 image?

Thanks.

Answer 1

3 is the number of channels in the colored image. That is, red, green and blue. If you had a gray-scale image then it would be 8x8 .

Yes, your image is 8x8 , but a colored one.