Biometric: Open the door with the eyes

Researcher Sammy Phang, Queensland University of Technology, said it was not a science fiction story when thinking about how soon our eyes could become the key to opening doors, accessing talent. Bank account and login to the computer.

Phang's research work at Queensland University's School of Environmental Engineering is helping to remove one of the final obstacles to the application of iris scanning technology. She said the pattern of iris like fingerprints with each model is unique.

She said: ' Every iris is unique and even the right eye pattern is different from the left . The iris pattern will be fixed throughout life. By using iris identification, we can attest to a person's identity based on who the person is more than who owns something, such as an identity card or password. This method has been used all over the world and may be within 10 to 20 years it will become an essential part of our daily lives. '

Researcher Sammy Phang at Queensland University of Technology (Photo: Queensland University of Technology)

Ms. Phang said that although the iris recognition system is being used in civilian applications, it is still not perfect. She said: 'The change in lighting conditions will change the size of one's pupil and alter the iris pattern'.

'If the size of the iris is different, the distortion of the iris pattern becomes very important, and this makes the iris recognition system difficult to operate properly'.

To overcome this shortcoming, Ms. Phang invented a technique to estimate the changing effect of the iris pattern as a result of changes in ambient light conditions. She said, 'The size of the iris may vary from 0.8mm to 8mm'.

Ms. Phang said that with the use of high-speed video cameras that can capture 1200 images per second, we can monitor the movements of the iris surface to study the iris pattern changes depending on How the pupil size change caused by light.'Research shows that each person's iris surface movement is different'.

The results of experiments using iris images have shown that we can estimate changes in the iris surface and the cause of iris changes due to conditions, she said. Different light.

'The comparison of the initial image similarity between the actual iris image and the estimated iris image based on this study suggests that this can completely improve the implementation of iris confirmation. '.

THANH TAM
According to the Queensland University of Technology, Dong Nai Department of Science and Technology