This image is very simple and honestly saying you can draw it in Rhino in just two minutes.

If you want to do it in Grasshopper you would need to look into Image Processing a little bit.

A starting point could be :

http://en.wikipedia.org/wiki/Sobel_operator

This should give you the position of the outlines.

So if you would like to filter the sky than you would need to make a black and white image first.

Get the Edges with e.g the sobel operator and then connect the points using something like:

http://de.wikipedia.org/wiki/Marching_Squares which is similar to Marching Cubes where there is a lot of discussion in Grasshopper forum and you can find some nice implementations there:

http://www.grasshopper3d.com/page/search-results?cx=007664031582976... 

Have fun.

Hi Nass,

Did you produced this image in Rhino? If the answer is yes how did you setup a fisheye camera in Rhino?

Thanks,

Mostapha