anonymous

> with bluring the edge of the images on the 2 or 3 screens

Cherche "softedge" sur Google ou sur le forum.

jitter-image-splitted-on-3-videoprojectors-how-do-you-do-that

Last spring I made a patch/app that I call "Edge Blender" to span one HD movie across 2 screens with optional edge blending:

http://www.zachpoff.com/site/software/edgeblenderforum.zip

(forum wouldn't allow me to attach the 550k zip)

http://www.zachpoff.com/site/software/images/edge-blender-full-with-interface.jpg

http://www.zachpoff.com/site/software/images/edge-blender-full.jpg

It handles arbitrary scaling and positioning and has an adjustable opacity contour for the blend (to deal with de-gamma and projector nonlinearities). It's designed to be released as a standalone app but I never bothered. You can hack it up and use whatever parts you need.

I attached it below and included a preference file, some alignment test images, and more photo documentation.

It works fine but you need to use high-contrast DLP projectors because your black levels need to be very dark. See this excellent web page for an explanation of the basic idea:

http://local.wasp.uwa.edu.au/~pbourke/texture_colour/edgeblend/

The forum thread where I stole the basic idea:

https://cycling74.com/forums/index.php?t=msg&goto=176871&rid=4723&S=ea9caf13c654cc4df26f9607c9d9be96&srch=edge+blending#msg_176871

Last spring I made a patch/app that I call "Edge Blender" to span one HD movie across 2 screens with optional edge blending:http://www.zachpoff.com/site/software/edgeblenderforum.zip
(forum wouldn't allow me to attach the 550k zip)

screenshots (with lousy LCD projectors):http://www.zachpoff.com/site/software/images/edge-blender-full-with-interface.jpghttp://www.zachpoff.com/site/software/images/edge-blender-full.jpg

It works fine but you need to use high-contrast DLP projectors because your black levels need to be very dark. See this excellent web page for an explanation of the basic idea:
also see: http://local.wasp.uwa.edu.au/~pbourke/texture_colour/edgeblend/

The forum thread where I stole the basic idea:https://cycling74.com/forums/index.php?t=msg&goto=176871&rid=4723&S=ea9caf13c654cc4df26f9607c9d9be96&srch=edge+blending#msg_176871

If you are a fan of GLSL shaders and Matrox D2G's, I came up with a solution for splitting a source to 2 screens and doing overlap/edgefade. The "tr.overlap3" shader will do the same for 3 screens (matrox t2g, etc.). The benefit of this solution is that it all works in a single window/context.

If you are a fan of GLSL shaders and Matrox D2G's, I came up with a solution for splitting a source to 2 screens and doing overlap/edgefade.  The "tr.overlap3" shader will do the same for 3 screens (matrox t2g, etc.).  The benefit of this solution is that it all works in a single window/context.

Is it 2 screen or 3 screens blending ? To put one on top of the others ?

Hello , This tr.overlap is very interesting. I need some help to modify it for cylindrer image with a fade to close the circle. Somebody can help me to reed the shader.

Hello , This tr.overlap is very interesting. I need some help to modify it for cylindrer image with a fade to close the circle.  Somebody can help me to reed the shader.
Thanks.


Is someone have Andrew's patch "edge blender" ?

Hi,
Is someone have Andrew's patch "edge blender" ?

My URL for "edge blender" has changed and I can't edit my previous post. It lives here now:

http://www.zachpoff.com/site2/wp-content/uploads/software/edgeblenderforum.zip

For archive purposes, the patch is below (but I recommend downloading the ZIP since it has a prefs file, test images and setup photos).

My URL for "edge blender" has changed and I can't edit my previous post. It lives here now:
http://www.zachpoff.com/site2/wp-content/uploads/software/edgeblenderforum.zip

For archive purposes, the patch is below (but I recommend downloading the ZIP since it has a prefs file, test images and setup photos).


jitter image splitted on 3 videoprojectors? how do you do that?