Modified discrete wavelet transform for odd length data appropriate for image and video compression applications
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United States of America Patent
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Jun 12, 2001
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N/A
app pub date -
Sep 28, 1998
filing date -
Sep 29, 1997
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Abstract
A method of producing a transform decomposition of data having an odd length the method comprising the steps of dividing the data into a portion having an even length of one element; performing a discrete wavelet transform on the even length data to produce low frequency subband data and high frequency subband data; adding the difference of the one element and an adjacent element to high frequency subband data. Preferably the transform is a Discrete Wavelet Transform utilised in the compression of image data.
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