Scanning docs

[Harry Bissell]

Oh one more comment

jpeg is GOD AWFUL at high contrast material... like schematics.
PLEASE don't do that the aliasing is terrible !!!

H^) harry

Don Tillman wrote:

>    Date: Wed, 23 Aug 2000 15:05:12 -0700
>    From: Jim Patchell <patchell at silcom.com>
>
>    How 'bout it gang.  Peter is scanning a bunch of documents
>    primarily from acutronics, which include ap-notes and circuits.
>    These documents are black and white.  Both text and drawings.
>    Which format would be best for posting on the internet?
>
> Here are some quick basics...
>
> If the source is still in business, get permission before placing the
> material on the web.
>
> PDF is great for documents that are composed like a book (chapted
> headings, page numbers, etc.) and are likely to be printed out in
> pages, but otherwise it's a drag.
>
> JPEG is for photographs, paintings, and stuff that's of similiar
> content with lots of color shading.
>
> GIF encodes colors with a lookup table, so it's great for drawings,
> schematics or logos.  GIF format can also assign a transparent color
> for doing non-rectangular images.
>
> BMP is Microsoft specific and not appropriate for the web.
>
> TIFF is for some specialized printers and not appropriate for the web.
>
> Before you place the images on the web, do what you can to reduce the
> file size.  JPEGs can be often created with less resolution and the
> grainyness might not be a problem.  GIFs can often be created with
> a smaller color lookup table.
>
> So the answer is likely to be to use GIF format with maybe 4 levels of
> gray.
>
>   -- Don