Measuring pupil size
نویسندگان
چکیده
منابع مشابه
Accurately Measuring the Size of the Pupil of the Eye
A new method has been developed for accurate shape analysis of the elliptical contour of a human’s pupil in images captured by a special infrared CCD video camera. The method is an effective combination of edge detection algorithms, a labelling method and a least squares fitting technique. The method is robust (eyes of different human races) and allows to trace the random movements of the pupil...
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Sympathetic function was studied in 101 diabetic children and 102 age and sex matched control children, as part of a longitudinal study of the evolution of microvascular disease in the population of diabetic children and adolescents in Avon County. The median (range) age of the diabetic population was 13.5 (6.0-17.2) years, the duration of diabetes was 4.0 (0.4-13.9) years, and glycated haemogl...
متن کاملPupil Size and Mental Load
This experiment explores whether the size of human pupil dilation is a measure that can discriminate between easier and harder intellectual tasks undertaken by the participant when information is displayed on a computer monitor. While it has been previously found that a participant’s pupil dilation will be larger during harder intellectual tasks, these experiments have not generally been conduc...
متن کاملClass size, pupil attentiveness and peer relations.
BACKGROUND Despite a long-running debate over the effects of class size differences on educational performance there is little evidence on the classroom processes that might be involved. AIMS The effects of class size differences are examined in relation to social and behavioural adjustment to school, in terms of two dimensions: attentiveness and peer relations. It was predicted that as class...
متن کاملEffect of Pupil Size on Trust
During close interactions with fellow group members, humans look into one another’s eyes, follow gaze, and quickly grasp emotion signals. The eye-catching morphology of human eyes, with unique eye whites, draws attention to the middle part, to the pupils, and their autonomic changes, which signal arousal, cognitive load, and interest (including social interest). Here, we examined whether and ho...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1977
ISSN: 0007-1161
DOI: 10.1136/bjo.61.12.791-a