Labels:book | bulletin board | reckoner | sky | windowpane OCR: TIFF5.0. Appondices I we don't have 8-bit samples we pai tp work: little harder so that we can make better use of the architecture of most CPUs. Suppose we have 4-bit samples packed two 10 a byte in TIFF uncompressed (i.e. Compression=1) fashion. In order to find I differences we want n first puxd xa each 4-bil sampk into an g-bit tat we hayt ons sumpk vyle low order justitied. We then perform the abowe horizontal I differencing. Once the differencing has been completed we then repack the 4-bit differences two to : byte in normal TIFF uncompressed fashion. If the samples are greater than 8 bits deep, expanding the samples into 16-bit spiom instead of 8-bil bytes seems Jike the best way to the subtraction on nast computers Note that we have not tost daa up to this point. nor will we lose an ...
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