HIGH-RESOLUTION IMAGE INTERPOLATION USING LAGRANGE-TYPE VARIABLE FRACTIONAL-DELAY FILTER
HIGH-RESOLUTION IMAGE INTERPOLATION USING LAGRANGE-TYPE VARIABLE FRACTIONAL-DELAY FILTER
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发表时间:
2006-07
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通讯作者:
T. Deng
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作者:
T. Deng
We have theoretically proved the Liu-Wei’s closedform formula for computing the coefficients of onedimensional (1-D) variable fractional-delay (VFD) finiteimpulse-response (FIR) digital filter derived from N -th order interpolating polynomial. In this paper, we extend the 1-D VFD filter design to the two-dimensional (2-D) case and show that the image interpolation using VFD filtering can achieve higher resolution image than the conventional interpolation techniques such as zero-order interpolation, bilinear interpolation, and 6-term polynomial interpolation.