  The study evaluates three background subtraction techniques. The techniques
ranges from very basic algorithm to state of the art published techniques
categorized based on speed, memory requirements and accuracy. Such a review can
effectively guide the designer to select the most suitable method for a given
application in a principled way. The algorithms used in the study ranges from
varying levels of accuracy and computational complexity. Few of them can also
deal with real time challenges like rain, snow, hails, swaying branches,
objects overlapping, varying light intensity or slow moving objects.
