Eye center localization method and localization system thereof

An eye center localization system, which is configured to locate an eye center position information from an image, the eye center localization system comprising:

• a database configured to access the image, a frontal face generating model and a gradient method;
• and
• a processing unit electrically connected to the database, wherein the processing unit receives the image, the frontal face generating model and the gradient method and is configured to implement an eye center localization method comprising:
• performing an image sketching step to sketch a face image from the image;
• performing a frontal face generating step to transform the face image into a frontal face image according to the frontal face generating model;
• performing an eye center marking step to mark a frontal eye center position information on the frontal face image according to the gradient method;
• and
• performing a geometric transforming step to calculate two rotating variables between the face image and the frontal face image, and calculate the eye center position information according to the two rotating variables and the frontal eye center position information;
• wherein the eye center marking step comprises:
• performing a weight adjusting step to adjust a weight value of the frontal face image according to an Iris-Ripple filter method.