Distance Measurement Using Single Non-metric CCD Camera

dc.contributor 國立臺灣師範大學電機工程學系 zh_tw
dc.contributor.author T.-H. Wang en_US
dc.contributor.author M.-C. Lu en_US
dc.contributor.author W.-Y. Wang en_US
dc.contributor.author C.-Y. Tsai en_US
dc.date.accessioned 2014-10-30T09:28:21Z
dc.date.available 2014-10-30T09:28:21Z
dc.date.issued 2007-08-26 zh_TW
dc.description.abstract A novel measuring system based on a single non-metric CCD camera and a laser projector is proposed in this paper for measuring distance of a remote object. The setup of the measuring system is relatively easy, in which the laser pointer is positioned beside the CCD camera so that laser beam projected is parallel to the optical axis of the camera in a fixed distance. Based on a fast and effective algorithm proposed in this paper, the central position of the projected laser spot in images due to the laser beam can be accurately identified for calculating the distance of a targeted object according to an established formula. Because of the relationship of pixels counts of the diameter of the laser spot at different distances, processing of a sub-frame comprising a fraction of scan lines, rather than the whole image, is only required. Significant savings of computation time can therefore be achieved. Simulation results show satisfactory measurements can be obtained, where averaged absolute measurement errors via the proposed approach lie within 0.502%. en_US
dc.description.uri http://www.wseas.us/e-library/conferences/2007athensel/papers/564-164.pdf zh_TW
dc.identifier ntnulib_tp_E0604_02_043 zh_TW
dc.identifier.uri http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/32020
dc.language en zh_TW
dc.relation the 7th WSEAS Int. Conf. on Signal Processing, Computational Geometry & Artificial Vision,Athens, Greece,p. 1-6 en_US
dc.subject.other Non-metric en_US
dc.subject.other Principal point en_US
dc.subject.other Distance measurement en_US
dc.subject.other CCD camera en_US
dc.subject.other Laser en_US
dc.title Distance Measurement Using Single Non-metric CCD Camera en_US