Masa

Thanks to Sam Tarakajian, I have built the prototype of the visual engine for my live music performance. The besic idea is to use the differences of frames fed by a webcam, as a source (or ingredients) for various live visuals. Could anyone kindly let me know first steps to generate ‘polygon mesh’ visuals and ‘line mesh’ visuals respectively, from the ‘differences of the frames’?

If it is easier for you, please feel free to use my ‘km.difference_visualiser_basic.maxpat’ and alter it.

‘km.difference_visualiser_basic.maxpat’ is a simplified version, for you to easily understand the structure.

Please download the compressed folder here, as the patch uses some sub patches.

https://www.dropbox.com/s/a97kzncx1r8fj31/max_patch.zip?dl=0

(The actual prototype patch is ‘phd_upgrade2_1512072249.maxpat’, if you’re curious to have a look.)

Apologies for my poor terminology. This picture helps explain what I mean with ‘polygon mesh’ and ‘line mesh’. 

http://api.ning.com/files/x7FG2HC67s1oiv6pqEYIzJnXGqQL5rX*dV1UdV14OTcNynQ*Oy1u-WPFfM4JyLvrfGAxA8W7WGOOCewBYSx2MJMBFJayqsRl/reciprocal_mesh.jpg

If it is easier for you, please feel free to use my ‘km.difference_visualiser_basic.maxpat’ and alter it.
‘km.difference_visualiser_basic.maxpat’ is a simplified version, for you to easily understand the structure.
Please download the compressed folder here, as the patch uses some sub patches.
https://www.dropbox.com/s/a97kzncx1r8fj31/max_patch.zip?dl=0
(The actual prototype patch is ‘phd_upgrade2_1512072249.maxpat’, if you’re curious to have a look.)

Apologies for my poor terminology. This picture helps explain what I mean with ‘polygon mesh’ and ‘line mesh’. http://api.ning.com/files/x7FG2HC67s1oiv6pqEYIzJnXGqQL5rX*dV1UdV14OTcNynQ*Oy1u-WPFfM4JyLvrfGAxA8W7WGOOCewBYSx2MJMBFJayqsRl/reciprocal_mesh.jpg

first-steps-to-generate-polygon-mesh-and-line-mesh-from-video-input-2

Still seeking for suggestions or advice!
Thank you very much in advance,
Masa


you probably will want to use geometry shaders for this. search the file browser for "gm" to find some examples.

Thank you very much Rob! I will look into the examples.

Masa, I'm in the exact same boat as you. The image you shared is pretty much what I'm trying to do. I just got directed into geometry shaders, but I'm having a hard time understanding those. Have you found a solution?

First steps to generate 'polygon mesh' and 'line mesh' from video input?