Contour and key point based eye feature extraction

Yue Wang; Yaping Wan; Xiaoshan Min; Zhiqing Fan; Yasha He; Gang Zou

doi:10.1117/12.2680952

8 June 2023 Contour and key point based eye feature extraction

Yue Wang, Yaping Wan, Xiaoshan Min, Zhiqing Fan, Yasha He, Gang Zou

Proceedings Volume 12707, International Conference on Image, Signal Processing, and Pattern Recognition (ISPP 2023); 127073U (2023) https://doi.org/10.1117/12.2680952
Event: International Conference on Image, Signal Processing, and Pattern Recognition (ISPP 2023), 2023, Changsha, China

Abstract

The use of eye movements for identifying intrinsic human psychological changes is a hot topic, and the identification of eye states in specific scenarios is the basis for analyzing the test taker's instantaneous psychological response state and thus for testing implicit driving quality deficits. Infrared eye images are difficult to visualize eye movements, and traditional eye image processing results are not suitable for eye state analysis. In order to make the eye images show the eye movements, a feature extraction method based on contours and key point is proposed for infrared eye images. To extract the eye contour features, the iris and eyelid contours are extracted based on the variation of gray values between the points located on the boundary and their surroundings; for the extraction of eye key point features, a network design with a combination of dlib and residual structure is used to extract the pupil and eyelid key points, respectively. The experimental results show that the method can represent the relative positions of the pupil, iris and eyelid separately with little computational effort, which can intuitively show the eye movement and thus reduce the stress of subsequent eye state recognition.

Citation Download Citation

Yue Wang, Yaping Wan, Xiaoshan Min, Zhiqing Fan, Yasha He, and Gang Zou "Contour and key point based eye feature extraction", Proc. SPIE 12707, International Conference on Image, Signal Processing, and Pattern Recognition (ISPP 2023), 127073U (8 June 2023); https://doi.org/10.1117/12.2680952

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KEYWORDS

Eye

Feature extraction

Contour extraction

Iris recognition

Convolution

Infrared imaging

Infrared radiation

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