An Accurate Eye Center Localization Method for Low Resolution Color Imagery

The development of eye localization and gaze tracking systems without the constraint of dedicated hardware, has lately motivated the scientific community. A lot of "passive" methods have been proposed, however their precision is limited and significantly reduced compared to the commercial, hardware-based, eye tracking devices. In this paper we introduce an automatic, non-intrusive method for precise eye center localization in low resolution images. To this end, the proposed system utilizes radial symmetry transform in both the original eye image and a novel eye map image derived from color information. Experimental results demonstrate great accuracy and robustness even in challenging cases, achieving also significant improvement over existing methods.