YongJie Wang

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In this paper, a novel visual secret sharing (VSS) scheme based on QR code (VSSQR) with (k, n) threshold is investigated. Our VSSQR exploits the error correction mechanism in the QR code structure, to generate the bits corresponding to shares (shadow images) by VSS from a secret bit in the processing of encoding QR. Each output share is a valid QR code that(More)
This paper reports conceptual design and structural analysis of a novel planar parallel robot including parallelogram linkages. The appropriate natural frequencies of robot throughout the whole workspace are predicted by FEA dynamic simulation, in which both links' and joints' flexibility is considered. And four main factors to determine the natural(More)
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