The MotionDetection sample appliaction shows how to use the MV Motion Detection filter. The MV Recording Filter is controlled by the motion detection filter through a boolean MontiVision I/O pin connection. MV Recording records the video only as long as motion is detected within the video. The recorded video is compressed using MV MJPEG Compressor and written to an AVI file.
This and other sample applications can be found in the MV Development Kit installation directory.
Filter Graph Summary
The following filter configuration is used to recognize motion inside a live video stream and to record this part of the video to an AVI file. The boolean Record output I/O pin of the MV Motion Detection filter starts and stops the recording on the MV Recording filter through the recording filters boolean Control I/O input pin.
This filter configuration is used to playback the video files recorded using the above configuration.
The Application
This sample application uses a MontiVision Smart Control to load and control the filter configuration and to display the live video stream. It uses the MV VideoSourceComboBox, MV VideoSizeComboBox and MV SelectInputComboBox controls to select and configure the video source.
A special feature of this sample is the usage of the the Smart Controls IMVSCLog interface. Log messages are sent by the MontiVision Smart Control through the IMVSmartControlEvents:LogMessage event. This application monitors the log events in a special logging window.
The motion detection algorithm is controlled by the Threshold and Minimum Luminance Difference sliders.
