Video input to create shadow


    Oct 11 2008 | 6:05 am
    Hi everyone. I'm a Jitter newbie and I'm wondering with what objects or where should I start if I wanted to do this task: take video input from a camera, define that it's an object moving, find it's edges and change the color for that object. More specifically grab video of a person and display it's shape completely in black, sort of like a shadow of that person.
    I downloaded the cv.jit externals but didn't really understand how to work with mass, blob detection and how to draw over that data. Any ideas of where to begin, what should I be looking for or avoiding?
    Thanks!

    • Oct 13 2008 | 3:38 pm
      not a good thing to try as a jitter newbie.
      definitely work your way up to the jitter tutorial that covers the use of jit.findbounds, and then reinstall the cv.jit set and take a look. we could write your patch for you, but it would make things awkward when shit ceases to function.
      On Oct 11, 2008, at 2:05 AM, Jose Olivares wrote:
      > > Hi everyone. I'm a Jitter newbie and I'm wondering with what objects > or where should I start if I wanted to do this task: take video > input from a camera, define that it's an object moving, find it's > edges and change the color for that object. More specifically grab > video of a person and display it's shape completely in black, sort > of like a shadow of that person. > > I downloaded the cv.jit externals but didn't really understand how > to work with mass, blob detection and how to draw over that data. > Any ideas of where to begin, what should I be looking for or avoiding? > > Thanks!
    • Feb 24 2011 | 3:05 pm
      Hi Subrayado and Joshua,
      I have a similar idea and also a problem to make it work. I have looked into the findbounds and the cv jit library as well, but I cannot figure out how these arguments work. The main idea is to reproduce the effect in Videoplaces by Krueger, just for learning purposes/experiment. When I have the desired effect it will be used in an installation.
      I have a live video input, and I am playing around with threshold but that does not give the precise effect I would like to have. @ Subrayado, since your post is about 2 years old, have you figured it out in the meantime and would you like to help out a new newbie? Thanks for your reply. Esther