Count the pixels in the drawn object.

You can tell whether a point is in

the object by wandering into a sufficient

distance, hereby counting how often

you cross the border of the figure.

Regards,

Joachim

Hi Joydeep,

How r u ?

You can import 2D image to CATIA software and trace out irregular shape surface area.

Hope this link will be helpful for understanding.

http://grabcad.com/questions/how-to-trace-a-picture-or-image-in-catia-and-converting-it-into-surface-or-solid

Bye

I realize that you would prefer to do this digitally but one of the simple ways is to make a copy and cut it out and compare the weight of it with the weight of one square dm of the same paper..

For Image drawn on paper, one can use a Planimetre. For digital images, it is necessary to know the extension of that file.

with only one photo, you can only guess , the darkness of a spot gives you some idea of how deep that spot is, May be that is what some of the software does (I am not familiar with these softwares)

if you have several photos taken through different angles , the guess can improve.

Do some calibration first, to find out the relation between depth and darkness under the same environment.