HiFiMask, the full name of CASIA-SURF HiFiMask, is the world's largest 3D Mask live attack dataset, containing 54,600 videos and 75 subjects (25 yellow people, 25 white people, and 25 black people). Each subject is collected with 3 different 3D Mask attack types (transparent, plaster, and resin) to restore the real face with high fidelity.

The dataset contains 6 complex scenes (white light, green light, 3 periodically changing light, outdoor strong light, outdoor shadow, motion blur, etc.), among which the periodically changing light uses [0.7, 4] Hz to simulate the human pulse.