Invention Grant
US07949244B2 Method for measuring subject distance 有权
测量对象距离的方法

Method for measuring subject distance
Abstract:
An exemplary method for measuring a distance from a subject to a camera includes the following operations: focusing on the subject using the imaging system; illuminating an area on the subject using auxiliary light; capturing an image of the subject, the image having an illumination portion corresponding to the illuminated area; measuring the area of the illumination portion of the image; and calculating the subject distance based on the measured area.
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