splitting G4 image without decompression

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splitting G4 image without decompression

Marvin Fresno
Hi,

Is it possible to split a G4 image into several G4
subimages without decompressing?

Thanks,
Marvin


 
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RE: splitting G4 image without decompression

Pallek, Bernie: #CIPO - OPIC
Marvin wrote:
> Is it possible to split a G4 image into several G4
> subimages without decompressing?

Probably not.  The vertical (2D) compression scheme relies on a previous line (an imaginary white line in the case of the first), so even if you could break the compressed data block into sub-blocks at line boundaries (already difficult/impossible), only the first sub-block would be able to use the imaginary white line above the image; the rest of the sub-blocks would be depending on the last line of the previous sub-block, which wouldn't be handled well by the standard decompression algorithm.

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