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- W2114984064 abstract "This paper presents a fast digital zooming system for mobile consumer cameras using directionally adaptive image interpolation and restoration methods. The proposed interpolation algorithm performs edge refinement along the initially estimated edge orientation using directionally steerable filters. Either the directionally weighted linear or adaptive cubic-spline interpolation filter is then selectively used according to the refined edge orientation for removing jagged artifacts in the slanted edge region. A novel image restoration algorithm is also presented for removing blurring artifacts caused by the linear or cubic-spline interpolation using the directionally adaptive truncated constrained least squares (TCLS) filter. Both proposed steerable filter-based interpolation and the TCLS-based restoration filters have a finite impulse response (FIR) structure for real time processing in an image signal processing (ISP) chain. Experimental results show that the proposed digital zooming system provides high-quality magnified images with FIR filter-based fast computational structure." @default.
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- W2114984064 date "2014-12-01" @default.
- W2114984064 modified "2023-09-23" @default.
- W2114984064 title "Fast digital zooming system using directionally adaptive image interpolation and restoration" @default.
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- W2114984064 doi "https://doi.org/10.1186/2193-1801-3-713" @default.
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