how modify the trainCasca​deObjectDe​tector to train with other types of features?

I need the source code of viola jones training algorithm, coz i used the trainCascadeObjectDetector but it doesn't allow to train with other types of features.

Answer 1

[Dima Lisin]

trainCascadeObjectDetector lets you specify Haar, HOG, or LBP features.

Answer 2

[md khan]

How do I specify which feature to select? In the example "trainCascadeObjectDetector('tennisballdetect.xml',positiveInstances, ... negativeFolder,'FalseAlarmRate',0.5,'NumCascadeStages',7);" automatically uses HOG.

How do I specify HAAR or LBP?