Method and device for judging whether upper eyelid shields iris

Abstract

The invention provides a method and a device for judging whether an upper eyelid shields an iris. The method comprises the following steps: acquiring an upper eyelid boundary and an iris region in a continuous face video frame; determining a standard point of the iris area according to the boundary line of the iris area of each human face video frame; judging that the upper eyelid shields the irisunder the condition that continuous shielded video frames exceeding a preset frame number appear; wherein the continuous occlusion video frames refer to continuous face video frames of the upper eyelid boundary passing through the standard points. The standard points of the iris area are determined through the boundary lines of the iris area, so that the standard points used for judging whether shielding occurs or not can also be correspondingly changed in the moving process of the iris area, and therefore, the judgment accuracy is ensured; therefore, the influence of blinking on the judgmentaccuracy is avoided because of a condition that pre-set frame number continuously shields a video frame and accuracy and reliability of shielding judgment are effectively improved.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a method and device for judging that an upper eyelid blocks an iris. Background technique [0002] The judgment that the upper eyelid blocks the iris has wide application significance in many fields. For example, when detecting driver fatigue, in the prior art, the driver's fatigue is usually judged by whether the upper eyelid blocks the iris. For example, in When detecting the degree of concentration of students in class, you can also judge the degree of concentration by detecting whether the upper eyelid of the student blocks the iris. [0003] However, in the prior art, the judgment of the upper eyelid blocking the iris is judged by judging the relationship between the upper eyelid boundary line and the inner midline of the eye. However, in many cases, such a detection method is not accurate. For example, when students are in class, they will Staring at the blackboard...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and device for judging that the upper eyelid blocks the iris to solve how to better realize the judgment that the upper eyelid blocks the iris has become an urgent problem in the industry

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