Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1993-09-22
1996-09-24
Mancuso, Joseph
Image analysis
Image transformation or preprocessing
Changing the image coordinates
382199, 36472401, G06K 932
Patent
active
055599052
ABSTRACT:
In an apparatus for resizing an image, comprising interpolation filter means for receiving a stream of input pixels having a predetermined sampling period P and a first sampling rate of S pixels/lines, and interpolating the stream of input pixels at a predetermined interpolation rate for generating a first derived sample stream of pixels having a further sampling period (M/(CL))P and a second sampling rate of T pixels/lines, where L is a first positive integer greater than one, C is a positive integer and M is smaller than CL, and where either 2.sup.n M/CL or 2.sup.-n M/CL is equal to time step increment M/L and the absolute value of n is at least equal to zero, and octave filtering means having a predetermined sampling rate which is related to the interpolation rate of the interpolation filter, for receiving the first derived sample stream of pixels and in response generating a stream of filtered output pixels having a sample period of (M/L)P, the improvement comprising means within the interpolation filter means for aligning the stream of input pixels and the first derived stream of sampled pixels at the boundaries of the image.
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Greggain Lance
Intihar Bruce
Mandl Peter
Fish Ron
Genesis Microchip Inc.
Mancuso Joseph
Shalwala Bipin
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