Comments on: Example 16-13: Simple Motion Detection

By: Daniel Shiffman

Daniel Shiffman — Mon, 18 Apr 2011 14:36:00 +0000

I would take a look at the overall motion example, you could use an if statment to play the video only when the overall average motion is above a certain threshold. good luck!

http://www.learningprocessing.com/examples/chapter-16/example-16-14/

By: Pepe100

Pepe100 — Wed, 23 Mar 2011 20:34:00 +0000

This is great, i am currently using processing to control video. Iv only been at it a day but would like to use motion capture to trigger a video to play and then pause when no motion is detected, and so on. I have never used processing before today so getting my head round the coding is proving tough. I have another piece of code that can pause the video using a mouse, is there a way to combine parts of both codes to trigger the video?

By: Marta Blicharz

Marta Blicharz — Sat, 26 Feb 2011 04:46:53 +0000

Hi,

I am trying to do a project that uses webcam motion detection to produce a “flashlight” or some concentrated distortion effect in a separate jpeg image (for example a picture of a car). The place of the motion in the webcam would correspond to the position of the distortion of pixels in the other image. Can you please point me to examples that would enable me to do this effectively?

Thanks for your time!

By: Knez

Knez — Tue, 28 Dec 2010 14:03:40 +0000

Finished!

Works like charm. Thanks a lot.

By: Daniel Shiffman

Daniel Shiffman — Mon, 20 Dec 2010 22:39:44 +0000

Use the save() method!

video.save(“motion.jpg”);

along with a conditional to determine the overall motion (see: http://www.learningprocessing.com/examples/chapter-16/example-16-14/) that should do the trick!

http://processing.org/reference/save_.html

By: Knez

Knez — Tue, 14 Dec 2010 21:11:06 +0000

I wonder if You can help me, and describe a little more (or give a hint) how to take an image (which will be stored somewhere on hdd) when web cam detects motion? Thank you anyway!

By: Ephrat

Ephrat — Mon, 22 Mar 2010 14:53:41 +0000

Thanks!

By: Daniel Shiffman

Daniel Shiffman — Sun, 21 Mar 2010 23:35:58 +0000

You need to keep track of which x,y locations contain motion. For example, you could use an ArrayList and each time you find a motion pixel, add the (x,y) data (perhaps as a PVector) to that ArrayList. Once you have that you could analyze the points an number of ways — look for overall average location of motion, do blob detection, etc.

By: Ephrat

Ephrat — Fri, 19 Mar 2010 16:02:46 +0000

How can I tell if there is motion taking place in specific parts of the captured video. For example if my size is (320,240) and I want to know if there is motion when 0 < x < 100 ; 120 < x < 220 ; 240 < x < 320?

By: Ad

Ad — Sat, 26 Sep 2009 10:17:56 +0000

Thanks alot, this works great