SwisTrack/Components/BackgroundSubtractionColor

DescriptionEdit

This component subtracts a background image from the input image. If the camera is fixed, only the objects added to the scene remain after this subtraction. However, lighting condition variations or camera noise can also produce differences between the two images. Subtracting average intensities of the two images makes the system more robust towards changing lighting conditions.

Most of the time, a threshold is applied after this method, to separate the background from the tracked objects.

InputEdit

SwisTrack ColorImage.jpg

A color image.

OutputEdit

SwisTrack BackgroundSubtractionColor.jpg

A color image.

ParametersEdit

Correct MeanEdit

Specify whether to correct the average intensity value of the input image with the average intensity value of the background image. This option makes the tracking less sensible to lighting conditions variations.

Background ImageEdit

Path to the background color image file. The background image must be a picture of the arena without the object to track.

SwisTrack ColorBackground.jpg

Last modified on 15 April 2009, at 10:29