Skip to main content
Fig. 2 | The Journal of Physiological Sciences

Fig. 2

From: A simple machine vision-driven system for measuring optokinetic reflex in small animals

Fig. 2

Pupil recognition and azimuth estimation. ac Online image processor which locates the pupil center. The overall state diagram (a) and image processing functions comprising the “Wait” (b) and “Inspect” (c) states. Screen dumps, the output images of the corresponding functions. Note that the images appear to be compressed along the y-axis because one out of two sets of interlaced scan lines were omitted from the image frame. df Off-line data analysis. The pupil rotation orbit was reconstructed, minimizing the influence of translation, re-targeting, mydriasis, and myosis and then the relative pupil azimuth (α) was determined. See “Results and discussion” and supplementary material for details

Back to article page