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Article: Automatic focusing system based on USB video camera

TitleAutomatic focusing system based on USB video camera
Authors
KeywordsAutomatic Focusing
Image Processing
Usb Interface
Video Camera
Issue Date2001
Citation
Guangdian Gongcheng/Opto-Electronic Engineering, 2001, v. 28 n. 5, p. 32-34 How to Cite?
AbstractAn automatic focusing system applied in USB video camera is introduced. The computer calculates video images captured by USB video camera through FFT operation for differential operation, so as to obtain its frequency data or differential data. The computer judges whether the lens of USB video camera is in defocusing position and moves the lens to the focusing position with a motor. The paper further discusses measures to improve automatic focusing accuracy. Experimental results show that the automatic focusing is a very good approach. The system will make the video camera with USB interface become simpler and more convenient.
Persistent Identifierhttp://hdl.handle.net/10722/90889
ISSN
2015 SCImago Journal Rankings: 0.253
References

 

DC FieldValueLanguage
dc.contributor.authorWang, L-Qen_HK
dc.contributor.authorLin, Ben_HK
dc.contributor.authorXu, X-Den_HK
dc.contributor.authorLu, Z-Ken_HK
dc.date.accessioned2010-09-17T10:09:54Z-
dc.date.available2010-09-17T10:09:54Z-
dc.date.issued2001en_HK
dc.identifier.citationGuangdian Gongcheng/Opto-Electronic Engineering, 2001, v. 28 n. 5, p. 32-34en_HK
dc.identifier.issn1003-501Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/90889-
dc.description.abstractAn automatic focusing system applied in USB video camera is introduced. The computer calculates video images captured by USB video camera through FFT operation for differential operation, so as to obtain its frequency data or differential data. The computer judges whether the lens of USB video camera is in defocusing position and moves the lens to the focusing position with a motor. The paper further discusses measures to improve automatic focusing accuracy. Experimental results show that the automatic focusing is a very good approach. The system will make the video camera with USB interface become simpler and more convenient.en_HK
dc.languageengen_HK
dc.relation.ispartofGuangdian Gongcheng/Opto-Electronic Engineeringen_HK
dc.subjectAutomatic Focusingen_HK
dc.subjectImage Processingen_HK
dc.subjectUsb Interfaceen_HK
dc.subjectVideo Cameraen_HK
dc.titleAutomatic focusing system based on USB video cameraen_HK
dc.typeArticleen_HK
dc.identifier.emailLin, B:blin@hku.hken_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0035494661en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035494661&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume28en_HK
dc.identifier.issue5en_HK
dc.identifier.spage32en_HK
dc.identifier.epage34en_HK

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