subrayado

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?

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. 

video-input-to-create-shadow

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 

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 

> 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?

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.

>
> 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!


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.

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


Video input to create shadow