Hierarchical face recognition training method and hierarchical face recognition method thereof

A hierarchical face recognition method for an image under detection, using a computer device to perform a face feature recognition of each of sub-image detectors on the image under detection, the method comprising:

• obtaining a plurality of training samples;
• performing a training measure, subdividing the training samples into a plurality of sub-image categories according to a plurality of angle intervals, and performing the training of a plurality of face features on a corresponding sub-image detector of each of the sub-image categories;
• repeatedly performing the training measure on each of the sub-image categories, so as to generate sub-image categories at a sub-level of the sub-image categories until a subdivision condition is satisfied;
• loading an image under detection;
• performing a face recognition measure, comparing a similarity of each of the sub-image detectors at the same level to the image under detection according to the image under detection, and selecting the sub-image detector having the highest similarity from the same level;
• and
• repeatedly performing the face recognition measure on the image under detection by the selected sub-image detector until the image under detection completes the sub-image detectors at the last level.