On Mon, Nov 06, 2000 at 03:50:30PM -0500, DAVDOU9211@xxxxxxx wrote:
> Something wierd is going on. We are using a Plustek Flat bed scanner to scan
> color prints for a family reunion project. The prints are 4x6 and have been
> scanned at 300dpi. Following the scan the file is saved to disc as a JPEG
> file. We then export it to Adobe Photoshop to edit it, and then re-save it
> again as a JPEG file. At this point the file size is usually 350KB to
> 450KB. Today, in the middle of the same work session, the file sizes in
> Adobe began to be 2,700KB to 3,100KB. We haven't made any changes in scan
> size and are using the same basic editing steps.
>
> It appears that something is happening to the JPEG compression. Any ideas as
> to what strange glitch could be causing this? The larger file size impacts
> storage for backup.
Are you using any filters like blurr? I once heard that the compression ratio
of the jpeg algorithm
increases when the amout of detail information is decreased. This is what
happens when you`re
electronically 'bookehing' the background.
Frieder Faig
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