Video motion detection triggers video over video (blend)
Hi all!
I am working in a video/audio installation that is not as straightforward as I thought it would be. This is what I need to do:
I will have a three minute looped video projection which plays the entire time.
In the space there will be a ip security camera which will work as a motion detector.
When someone enters the room, the camera detects the motion and triggers randomly a twenty second clip (from a set of ten) on top of the looped video as an "Overlay" or "Darken" blend mode. Once the twenty second clip has finished, the next twenty second clip won´t be triggered until someone else enters the space.
I´m totally lost. Any suggestions for a possible solution?
You have your three minute loop playing?
You have your camera setup and are recieving the frames in max?
You have your tracking system set up?
You have a random generator with your values of 0 - 9?
You have your mixer set up?
Where exactly are you strugling?
Hi Steve J! Thanks a lot for answering.
Yes I have everything set up but my main challenge was mixing (still a newbie here). However, searching with the right keyword combination I found references to Zach Poff "Video Trigger" and HC Gilje "Video Projection Tool" and these two seem to offer everything I need.
Playing with configurations at the moment.
Thanks!
Hi, just saw your question. I have a really similar idea for my senior project, and have work foe a while. Did you figure anything out? I am very curious. The hardest part for me is the connection between video and motion detection. I know how to make effects through web cam, and also explore Video Trigger Video, also (VPT). However, I am still not able to find out. It will be great if you can share some ideas with me.
Thank you!
I would do this with a simple frame difference detection (absdiff), then into a hard b/w scale (smoothstep) and then detect the alpha with jit.m3.
maybe there is a better solution, but this is what just came in my mind.
Herr Markant solution is good but I would stay on the cpu and use jit.pix instead of gl.pix. Going from a gl.pix to a jit.matrix is a total bottleneck.
Thank y'all for replying me. I am still in the progress.
What I really want to do is to detect motion as toggle(video trigger video:https://www.zachpoff.com/software/video-triggers-video/) .
Whenever the "zone" detect objects, it will trigger effects on a film that I made earlier. What I have so for is that when the webcam detect an object(within the "zone"), film starts playing right away; when the object moves out of frame, video stops.
However, I want to trigger more advanced effects. For example, multiple "zones" can trigger different effects(delay, color effects, fasten.etc) of my video.
Let me know if my words confuse you guys, and I am trying to learn more with MAX7. Thank you!
You should use openCV and blob tracking then. Check the cv.jit Package.
or just use jit.scissors for different "zones"