01406nas a2200181 4500008004100000245007000041210006800111260006600179300001200245490000700257520081800264100001501082700001301097700001401110700001601124700001401140856007001154 2017 eng d00aImage processing-based automatic pupillometry on infrared videos.0 aImage processingbased automatic pupillometry on infrared videos aSzegedbSzegedi Tudományegyetem / University of Szegedc2017 a599-6130 v233 a
Pupillometry is a non-invasive technique that can be used to objectively characterize pathophysiological changes involving the pupillary reflex. It is essentially the measurement of the pupil diameter over time. Here, specially designed computer algorithms provide fast, reliable and reproducible solutions for the analysis. These methods use a priori information about the shape and color of the pupil. Our study focuses on measuring the diameter and dynamics of the pupils of rats with schizophrenia using videos recorded with a modified digital camera under infrared (IR) illumination. We developed a novel, robust method that measures the size of a pupil even under poor circumstances (noise, blur, reflections and occlusions). We compare our results with measurements obtained using manual annotation.
1 aKalmár, G1 aBüki, A1 aKekesi, G1 aHorváth, G1 aNyúl, LG uhttp://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/29