Pupil detection device

摘要

There is provided a pupil tracking device including an active light source, an image sensor and a processing unit. The active light source emits light toward an eyeball alternatively in a first brightness value and a second brightness value. The image sensor captures a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value. The processing unit identifies a brightest region at corresponding positions of the first brightness image and the second brightness image as an active light image.

主权项

1. A pupil tracking device, comprising:
an infrared light source configured to emit light toward an eyeball alternatively in a first brightness value and a second brightness value; an image sensor having a contact point and configured to capture a first brightness image corresponding to the first brightness value and a second brightness image corresponding to the second brightness value; and a processing unit electrically coupled to the contact point of the image sensor, and configured to
identify a first brightest region in the first brightness image and a second brightest region in the second brightness image,identify the first brightest region and the second brightest region as infrared light images associated with the infrared light source when the first brightest region and the second brightest region are at corresponding positions in the first brightness image and the second brightness image, andidentify the first brightest region and the second brightest region as ambient light source images when the first brightest region and the second brightest region are not at corresponding positions in the first brightness image and the second brightness image.