1. A computer-implemented method for entity detection, the method comprising: detecting, via a camera, an entity passing through a perimeter of a predefined area; upon detecting the entity passing through the perimeter of the predefined area, classifying, via a processor, a type of the entity from an image of the entity captured by the camera; upon classifying the type of the entity, detecting, via the processor, a feature of the entity from the image of the entity; and assigning, via the processor, an identifier to the entity based at least in part on the type and the detected feature of the entity, the identifier distinguishing the entity from another entity of a same type.