ranmafan

First off, I'd like to introduce myself. I'm a student at a local Singaporean university and I'm enrolled in an interactive media course. My current term project is to create a distortable live-feed video (of someone's face), and I've been stymied by the steps required.

My first experiment is cutting the feed up into a grid of 3x3 matrices (@rows 3, @colums 3) and then distorting each of them with zoom. However this presents several problems:

1. Each cell created with scissors is of a fixed matrix dimension (I'm using 160 x 120 for now), and if I distort the video, the maximum viewable area of the matrix doesn't change, so it gets cut off.

2. If I expand the matrix size and adjust the initial settings, I can distort the image to my liking but the 3x3 display glues together incorrectly with lots of dead space at the default settings.

Is there any way of actually adjusting/resizing the matrix itself in real time, or am I doing it all wrong to begin with? (Actually I think I'm doing it wrong.) I've only had a month's experience with this and I can't find anything in the tutorials/documentation that might help.

The final program will be hooked up to IR or Motion sensors embedded in a surface so when a hand moves over them they will track the movement and 'drag' the matrix along accordingly. There will be a blue screen, so after chromakeying there won't be a background to bother with.

distorting-a-matrix

I would suggest you look at jit.repos, and generate a spatial 

displacement matrix for whatever effect you're looking to achieve. 

Check out the examples under jitter-examples/video/spatial.

Otherwise, if you do want to follow the scissors glue route or some 

other strategy, you'll need to actually post a simple patch which 

illustrates your desired effect and problems achieving said effect. 

Given the information provided, there's no much insight we can provide.

I would suggest you look at jit.repos, and generate a spatial  
displacement matrix for whatever effect you're looking to achieve.  
Check out the examples under jitter-examples/video/spatial.

Otherwise, if you do want to follow the scissors glue route or some  
other strategy, you'll need to actually post a simple patch which  
illustrates your desired effect and problems achieving said effect.  
Given the information provided, there's no much insight we can provide.

in addition to what joshua suggested, you might want to check this out:

Cool. I'll get my current patch up... been working on it and I think I just found the message box parameter that changes matrix size. Still doesn't solve my problem but I'll try the others ASAP.

Distorting a matrix?