Training own classifiers using trainCascadeObjectDetector for face detection I want to train a cascade classifier to face detect. I read this page. But I wont use trainingImageLabeler app, because I already have face and nonface database sized 24x24. How I use trainCascadeObjectDetector function with my own database?

Is there any example except this you know?
If you want to train the classifiers with your own database, you will only need 'trainCascadeObjectDetector' function and feed your images into the proper arguments (Positive, negative images). The output classifier will be in your 'outputXMLFilename' as in  traincascadeobjectdetector

trainingImageLabeler is helpful function for classifying positive/negative image. Try this function later when you work with larger database.