The database systematically varies images across these categories:
The database was developed by the Joint Research & Development Laboratory (JDL) of the Chinese Academy of Sciences (CAS). Its primary purpose is to provide researchers with a robust dataset for training and testing algorithms against real-world visual challenges. Core "PEAL" Features Cas Peal
: Images are captured from multiple angles using a horizontal semicircular camera array to simulate different head rotations. face pose angles
: The dataset provides metadata such as eye positions, face pose angles, and expression labels to help refine detection systems. Cas Peal