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dc.contributor.authorYeh, YMen_US
dc.contributor.authorChiang, HCen_US
dc.contributor.authorWang, SJen_US
dc.date.accessioned2014-12-08T15:43:24Z-
dc.date.available2014-12-08T15:43:24Z-
dc.date.issued2001-10-01en_US
dc.identifier.issn0091-3286en_US
dc.identifier.urihttp://dx.doi.org/10.1117/1.1405415en_US
dc.identifier.urihttp://hdl.handle.net/11536/29374-
dc.description.abstractWe propose an efficient algorithm to eliminate the nonpleasing effect caused by involuntary hand movement of camera holders. In our approach, 1-bit gray-coded bit-plane block matching, instead of 8-bit gray-level block matching, is used to greatly simplify the computation of motion estimation. This computation saving makes possible a finer division of image frame and thus facilitates the employment of a much more robust procedure for motion decision. To deal with various interfering factors in motion estimation, the temporal information of each local motion vector is also used to efficiently distinguish random-like movement from temporally correlated movement. To compensate for camera rotation, an affine model is used in the motion compensation unit without adding too much computation load. Having considered both programming flexibility and hardware efficiency, the motion decision unit and the motion compensation unit are coded in a microprocessor that interconnects with the stabilization hardware, which consists of the motion estimation unit and the digital zooming unit. A slightly simplified version of the proposed stabilizer is implemented on a field programmable gate array (FPGA) board. (C) 2001 Society of Photo-Optical Instrumentation Engineers.en_US
dc.language.isoen_USen_US
dc.subjectdigital image stabilizationen_US
dc.subjectmotion estimationen_US
dc.subjectdigital camcorderen_US
dc.subjectgray-coded bit-planeen_US
dc.titleDigital camcorder image stabilizer based on gray-coded bit-plane block matchingen_US
dc.typeArticle; Proceedings Paperen_US
dc.identifier.doi10.1117/1.1405415en_US
dc.identifier.journalOPTICAL ENGINEERINGen_US
dc.citation.volume40en_US
dc.citation.issue10en_US
dc.citation.spage2172en_US
dc.citation.epage2178en_US
dc.contributor.department电子工程学系及电子研究所zh_TW
dc.contributor.departmentDepartment of Electronics Engineering and Institute of Electronicsen_US
dc.identifier.wosnumberWOS:000172142500019-
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