[Vxl-users] Need more explanation

[Jaonary R. <ja...@fr...>]

Hello,

I'd like to use vxl to detect features in an images. In order to do  
this I have to do some smoothing and some geometrical transformation.  
I plan to use especialy the functions available in vil but the are  
some questions that I can't answer and the documentation don't help  
me no more :-(

- what is the coordinate pixel used in the class vil_image_view? I  
mean,  does the pixel coordinate  (i,j) follow the standard  
coordinate system used in computer science (origin = upper letf, i  
from left to right,, j  up down) or otherwise.

- what are the relation between the pixel coordinate and the space  
coordinate ? Especially, when I transforme my image with vil_rotate  
or vil_wrap how can ... I control the location of my output image in  
the space ?

Thanks a lot,


--------------
Jaonary Rabarisoa
ja...@fr...