Android : Simple Real Time Motion Detection using Basic4Android and JavaCV

The android camera preview image (shown in the upper left corner) is fed to a backgroundsubtractor-object (part of the JavaCV framework).
It generates as mask which separates the moving parts of the
image from the "static" (not moving) background.

The background is dynamically updated with every new preview image. When a moving body comes to rest it will "vanish" in the background within an adjustable time (parameter).

App created with Basic4Android(v 4.30), some classes and methods of JavaCV were wrapped and used as a B4A-Library.

Device : Nexus 7 (2013), Android 4.3, not rooted
filmed with Panasonic Lumix FS16