simplecv[]
http://simplecv.org/ SimpleCV is an open source framework for building computer vision applications. With it, you g et access to several high-powered computer vision libraries such as OpenCV – without having to first learn about bit depths, file formats, color spaces, buffer management, eigenvalues, or matrix versus bitmap storage. This is computer vision made easy.
https://github.com/sightmachine/simplecv-mobile-camera use android phone as motion detection device.