Method and apparatus for detecting blink
AssigneeUtechzone Co., Ltd.
InventorsChia-Chun Tsou, Chia-We Hsu
Life of this patent
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Abstract
A method and an apparatus for detecting blink are provided. After obtaining an eye image sequence of a user, a currently analyzed image and a previously captured image are obtained from the eye image sequence and reflective regions of the currently analyzed image and the previously captured image are filtered, wherein the brightness values of pixels included in the reflective regions are higher than a brightness threshold. Difference pixel amount between the currently analyzed image and the previously captured image is calculated so as to determine whether the user blinks according to the difference pixel amount.
Claims10
A method for detecting blink, comprising:
- obtaining an eye image sequence of a user;
- obtaining a currently analyzed image and a previously captured image from the eye image sequence;
- filtering reflective regions of the currently analyzed image and the previously captured image, wherein brightness values of pixels included in the reflective regions are higher than a brightness threshold;
- calculating a difference pixel amount between the currently analyzed image and the previously captured image;
- and
- determining whether the user blinks according to the difference pixel amount.
A blink detection apparatus, comprising:
- an image capturing unit, obtaining an eye image sequence of a user;
- a storage unit, comprising a plurality of modules;
- and
- a processing unit, coupled to the image capturing unit and the storage unit, and executing the modules, wherein the modules comprise:
- a light-shadow analysis module, obtaining a currently analyzed image and a previously captured image from the eye image sequence, wherein a capturing time of the currently analyzed image is different to that of the previously captured image, and the light-shadow analysis module filters reflective regions of the currently analyzed image and the previously captured image, wherein brightness values of pixels included in the reflective regions are higher than a brightness threshold, and the light-shadow analysis module calculates a difference pixel amount between the currently analyzed image and the previously captured image;
- and
- a blink determination module, determining whether the user blinks according to the difference pixel amount.
Dependencies are inferred from the claim text.