The files about motion detection and tracking techniques with Pure Data and Gem[[Tracking Motion Detection#Gem|Graphics Environment for Multimedia]] an OpenGL extension for →[[Pure Data|Pd]]:
Hier die Dateien aus dem Unterricht zu Motion Detection und Tracking mit Pure Data und Gem[[Tracking Motion Detection#Gem|Graphics Environment for Multimedia]] an OpenGL extension for →[[Pure Data|Pd]]:

These Pure Data/Gem[[Tracking Motion Detection#Gem|Graphics Environment for Multimedia]] an OpenGL extension for →[[Pure Data|Pd]] patches make use of a (web)cam. Please make sure to connect one prior to launching Pure Data.
Since only one patch can access the video camera at a time, please close the first patch before opening the next one.
On Linux and Windows doubleclicking on a file may cause another instance of Pd[[Pure Data]] a dataflow programming environment to launch. Please use the open dialog from the File menu instead of clicking on the files.
Download: Media:Bewegungsmelder.zip with english comments

Go to the Github repository for a more up-to-date version of these patches Github repository
To get you started with Pure Data I recommend following the suggestions and links on the page: Pure Data - Getting started.