How to detect size of image?

How to detect the size of the image ?

Answer 1

[Walter Roberson]

size()

[Walter Roberson]

Or are you trying to figure out the "real-world" size of what is represented in the image? If so then there are techniques, none completely reliable, but which to use would depend upon what is shown in the image.

Answer 2

[Image Analyst]

Use the size() function, but only after you've read this link: http://blogs.mathworks.com/steve/2011/03/22/too-much-information-about-the-size-function/

[rows, columns, numberOfColorChannels] = size(yourImage);