公开(公告)号：US20190108395A1

公开(公告)日：2019-04-11

申请号：US16213043

申请日：2018-12-07

Applicant: PixArt Imaging Inc.

Inventor： YU-HAO HUANG ,  MING-TSAN KAO ,  YI-FANG LEE ,  EN-FENG HSU ,  MENG-HUAN HSIEH ,  NIEN-TSE CHEN

IPC: G06K9/00 ,  H04N5/235 ,  G06F3/01

Abstract: 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.

公开(公告)号：US20200065579A1

公开(公告)日：2020-02-27

申请号：US16672568

申请日：2019-11-04

Applicant: PixArt Imaging Inc.

Inventor： YU-HAO HUANG ,  MING-TSAN KAO ,  YI-FANG LEE ,  EN-FENG HSU ,  MENG-HUAN HSIEH ,  NIEN-TSE CHEN

IPC: G06K9/00 ,  G06F3/01 ,  H04N5/235

Abstract: 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.