The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2013
Filed:
Dec. 28, 2010
Shi-qiang Lin, Taipei, TW;
Yu-shan Huang, Taipei, TW;
Chao-hung Chang, Taipei, TW;
Hsuan-hung Liu, Taipei, TW;
Shi-Qiang Lin, Taipei, TW;
Yu-Shan Huang, Taipei, TW;
Chao-Hung Chang, Taipei, TW;
Hsuan-Hung Liu, Taipei, TW;
Avermedia Information, Inc., Taipei, TW;
Abstract
A size estimation method is used with a document camera to estimate an object size. The document camera includes a lens and an image sensor. The size estimation method includes the following steps. Firstly, an object distance between the lens and the object is detected. According to the object distance and a viewable angle of the lens, a shooting zone size is estimated. Then, the object is shot by the lens and the image sensor, thereby acquiring a digital image including an image of the object. Then, an effective pixel number corresponding to the object image is counted. Afterward, the size of the object is estimated according to the effective pixel number, a total pixel number of the image sensor and the shooting zone size.