The face dataset provided by BioID contains 1521 grayscale images with a resolution of 384×286, each of which is a frontal photo of 23 different testers. In addition, the dataset also provides the eye position information of each image, which is used for research in fields such as face detection. The image files of this dataset are saved in pgm format, and the eye position information is stored in text information named .eye, using x and y coordinates to represent the position of the left and right eyes.