The system and method for eye image segmentation disclose the estimation of quality. In one aspect, on receiving eye image, equipment such as augmented reality equipment can handle eye image using neural network and the combined structure of convolution to generate on two segmentation eye images and one estimates eye image. Segmentation eye image may include background area, sclera region, iris region, pupil area. On the other hand, the neural network of convolution can be trained for estimating eye image segmentation and picture quality with combined structure. In yet another aspect, segmentation left-eye image can be used to eye contour is determined, for example, the profile of pupil and iris profile in equipment. The present apparatus can make the calculating iris code or biometric authentication of eye contour creation polar region image iris region.