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This paper presents a novel image interpolation method, extended linear interpolation, which is a low-cost and high-speed architecture with interpolation quality compatible to that of bi-cubic convolution interpolation. The method of reducing computational complexity of generating weighting coefficients is proposed. Based on the approach, the efficient hardware architecture is designed under real-time requirement. Compared to the latest bi-cubic hardware design work, the architecture savesdoi:10.1109/icess.2008.85 dblp:conf/icess/LinSCWTC08 fatcat:wwgzb2odgrfujclnm4ogkt4oxq