Method and apparatus for generating, updating classifier, detecting objects and image processing device

An apparatus for generating a binary-class classifier for distinguishing an object with a background, the apparatus comprising:

• a memory;
• at least one processor coupled to the memory which executes the following:
• generating a one-class object classifier using at least one object sample;
• selecting background samples from background image regions obtained from a sequence of images, using the one-class object classifier;
• clustering the selected background samples into at least one set of background samples;
• generating at least one one-class background classifier by generating a one-class background classifier for each set of background samples;
• and
• generating the binary-class classifier by assembling the one-class object classifier and the at least one one-class background classifier into the binary-class classifier.