Device for detecting pupil taking account of illuminance and method thereof
AssigneeHyundai Motor Company
InventorSeon A KIM
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Abstract
The present disclosure relates to a device for detecting a pupil taking account of illuminance and a method thereof, and provides a device for detecting a pupil taking account of illuminance capable of improving detection accuracy of the pupil by detecting a driver's pupil from an image using an adaptive threshold based binarization technique based on a lookup table in which sizes of the pupil corresponding to illuminance are written, and a method thereof.
Claims12
A device for detecting a pupil taking account of illuminance, the device comprising:
- a lookup table containing a plurality of sizes of the pupil corresponding to different illuminance;
- an image obtainer obtaining a face image;
- an illuminance measurer measuring illuminance at a timing in which the image obtainer obtains the image;
- a pupil detector converting an eye region of the image obtained by the image obtainer into a binary image using a threshold, extracting boundary lines from the converted binary image, and detecting the pupil by applying a circle fitting algorithm to the extracted boundary lines;
- and
- a controller determining effectiveness of the pupil detected by the pupil detector based on the lookup table.
A method for detecting a pupil taking account of illuminance, the method comprising steps of:
- obtaining, by an image obtainer, a face image;
- measuring, by an illuminance measurer, illuminance at a timing in which the image obtainer obtains the image;
- converting, by a pupil detector, an eye region within the obtained face image into a binary image using a threshold, extracting, by the pupil detector, boundary lines from the converted binary image, and then applying, by the pupil detector, a circle fitting algorithm to the extracted boundary lines so as to detect the pupil;
- and
- examining, by a controller, effectiveness of the pupil detected by the pupil detector based on a lookup table.
Dependencies are inferred from the claim text.