Thread: LZW compression
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Old 26th February 2016, 16:37   #4  |  Link
rudyb
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Join Date: Aug 2014
Posts: 29
I am not sure if I agree that RAW and TIFF are similar. They are different. (http://photo.net/learn/raw/)
For example, RAW data there is only one channel per pixel, which is the bayer pattern. Because it hasn't yet been interpolated to have three channels (RGB) per pixel.
Where as IFF has already passed the interpolation stage, and it is already de-mosaiced, and each pixel has three channels (RGB).

Another explanation is the following statement from (http://www.poundslabs.com/documents/digitaldemys.pdf):

"Even though the TIFF file only retains 8 bits per channel of information, it will
take up twice the storage space than a RAW file because it has three 8 bit
color channels versus one 12 bit RAW channel."

So, applying LZW on TIFF is different thatn applying LZW on RAW. And I was wondering if we can apply LZW on RAW images? And is it worse or better than applying it on TIFF?
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