Methods and apparatus for re-scaling image by variable...

Details Methods and apparatus for re-scaling image by variable... Methods and apparatus for re-scaling image by variable...

2005-03-30

2008-11-04

Yenke, Brian P (Department: 2622)

Television

Image signal processing circuitry specific to television

Special effects

C348S441000, C382S298000, C382S299000, C345S660000

Reexamination Certificate

active

07446820

ABSTRACT:
A method includes receiving a sequence of input samples that represents a row of pixels in an image. The method further includes selecting a re-scaling factor for at least a portion of the row of pixels. The method further includes determining a phase offset based on the selected re-scaling factor, and applying a direct B-spline transform to a group of the samples to generate transform coefficients. The method further includes providing the transform coefficients as an input to a filter bank, and applying the phase offset at an output of the filter bank to generate a sequence of output samples.

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S.R. Dooley, R.W. Steward and T.S. Durrani, “Fast on-line B-spline interpolation”, Electronics Letters Jul. 8, 1999, vol. 35, No. 14, pp. 1130-1131.

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