Program to view the actual size of the image

[Y2kCyK]

I lay in that very subject. I wonder if there is a program that shows us the real size of an image, for example, if I take my picture and the photo pro switch pc which the program able to say my time? Or if I take a picture of the gate away from home and go pro pc which program shows the actual height of the gate? You understand? Is there a program capable of doing that, or is this my stupid question?

[Jimmy24]

I think that there is no possibility
Is difficult, because basically everything depends on the distance between the lens and the object photographed. Even if it takes into account the IPR of the image, would not go right.

[Isaac1]

I saw a camera well in environmental research in Africa, a program of the Discovery Channel.

The camera to broadcast two beams of light in the picture, and after downloading the picture, the software calculates the difference between the benchmarks and it traces a line for the rest of the body of the animal or object.

The results showed an accuracy of 95%.

This is through a matrix of points:
http://www.sciencedaily.com/releases...0227184837.htm

I have not found an article about this camera.

[Gusgr8]

You do not have to know the actual size of the image simply by the image of you already scanned without the necessary resources.

It's the same thing you beat a picture of an ant up close (macro) and say that the ant is the size of a train

And with this technology are the films utilized to make flicks such as the GODZILLA

[Y2kCyK]

Thank you for answers. Wanted to Edit my question because it was with errors.
Thanks to all.