Boots – shoes – and leggings
Patent
1987-07-24
1989-08-08
Lall, Parshotam S.
Boots, shoes, and leggings
382 54, 364570, 358160, 358133, G06K 936, H04N 514
Patent
active
048559431
ABSTRACT:
A circuit and a method deaverages a stream of digital data in order to reconstruct an original non-averaged data stream therefrom, and particularly for reconstructing non-averaged (original) pixel values from a scan line containing averaged odd/even pixel values. If "n" equals the number of separate values used to determine each average value, deaveraging is accomplished by multiplying an incoming averaged digital data value by a pre-determined amount to yield a multiplied average value; subtracting "m" successive prior data values in a reconstructed stream of original non-averaged data values from the multiplied average value in order to yield a current value, wherein the value of "m" equals "n-1"; delaying the current value by "m" successive delay intervals in order to provide "m" separate corresponding ones of the prior data values; and routing the current value to an output point as being a current non-averaged value in said reconstructed data stream. Advantageously, when the deaverager is used to deaverage a scan line containing odd/even averaged pixels, only the value of one pixel, i.e. the first non-averaged pixel that appears in the scan line, must be stored. As a result, the deaverager is advantageously simple and inexpensive to implement.
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Arndt Dennis R.
Eastman Kodak Company
Lall Parshotam S.
Mattson Brian M.
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