A low lighting or contrast ratio visible iris recognition using iso-contrast limited adaptive histogram equalization

作者：

Highlights：

• Low lighting iris image will reduce the iris segmentation accuracy.

• Low contrast ratio between the iris and the pupil caused error pupillary detection.

• CLAHE is used to limit contrast amplification of sub-regions.

• ISO is used to provide sub-regions with linear distribution intensities.

• A fusion of iso-CLAHE improved the eye image from a low lighting or contrast ratio.

摘要

•Low lighting iris image will reduce the iris segmentation accuracy.•Low contrast ratio between the iris and the pupil caused error pupillary detection.•CLAHE is used to limit contrast amplification of sub-regions.•ISO is used to provide sub-regions with linear distribution intensities.•A fusion of iso-CLAHE improved the eye image from a low lighting or contrast ratio.

论文关键词：Iris recognition,Color contrast enhancement,iso-CLAHE,Low lighting,Low contrast ratio

论文评审过程：Received 22 May 2014, Revised 31 October 2014, Accepted 2 November 2014, Available online 11 November 2014.

论文官网地址：https://doi.org/10.1016/j.knosys.2014.11.002