Gabe Schaffer wrote:
On 11/5/06, Anthony Thyssen <[EMAIL PROTECTED]> wrote:
"J. Young" on wrote...
| convert bigpage.jpg -crop 50%x0+0+0 page1.jpg
| convert bigpage.jpg -gravity East -crop 50%x0+0+0 page2.jpg
|
| So this works ok, but is it a lossless operation as far as image
| quality? If not, could someone recommend a lossless equivalent?
|
JPEG to JPEG is always lossless in IM.
Always lossless? Did you mean never?
and there does not appear to be a lossless cut or crop opperation
provided by jpgtran. I'd say you best bet is to just not save back to
JPEG, or upgrade to using the new JPG2K library.
The version of jpegtran on my machine (from 1998) has a crop feature,
and I'm pretty sure that jpegtran doesn't even have the capability to
perform lossy operations.
I'm going to bet that jpegtran -crop is exactly what the OP wants.
GNS
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Is jpegtran -crop depreciated? I don't seem to have that available...
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