Invention Grant
- Patent Title: Method for measuring subject distance
- Patent Title (中): 测量对象距离的方法
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Application No.: US12033219Application Date: 2008-02-19
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Publication No.: US07949244B2Publication Date: 2011-05-24
- Inventor: Cheng-Wei Huang
- Applicant: Cheng-Wei Huang
- Applicant Address: TW Tu-Cheng, New Taipei
- Assignee: Hon Hai Precision Industry Co., Ltd.
- Current Assignee: Hon Hai Precision Industry Co., Ltd.
- Current Assignee Address: TW Tu-Cheng, New Taipei
- Agent Jeffrey T. Knapp
- Priority: CN200710202451 20071109
- Main IPC: G03B3/00
- IPC: G03B3/00

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.
Public/Granted literature
- US20090123142A1 METHOD FOR MEASURING SUBJECT DISTANCE Public/Granted day:2009-05-14
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