Cas Peal May 2026

is a large-scale Chinese face database created to evaluate face recognition algorithms, specifically focusing on four key types of variations known as PEAL : P ose, E xpression, A ccessories, and L ighting .

: Includes various facial expressions such as neutral, smile, surprise, frown, and closed eyes. Cas Peal

: Contains images of 1,040 individuals (595 males and 445 females). is a large-scale Chinese face database created to

: Subjects are photographed wearing different accessories, including various pairs of glasses and different types of caps. Researchers use this data to benchmark various algorithms,

: The full database includes 99,594 images, while a publicly available subset called CAS-PEAL-R1 contains 30,900 images.

: The dataset provides metadata such as eye positions, face pose angles, and expression labels to help refine detection systems.

Researchers use this data to benchmark various algorithms, including Principal Component Analysis (PCA) and Local Binary Patterns (LBP) , ensuring they can handle the diverse conditions found in practical applications.