Re: filmscanners: OT: JPEG on Amiga

[Arthur Entlich]

Hi Richard,

As an Amiga user myself, for many years, (in fact, I was using an Amiga
when I was involved with the JPEG group), the answer is today, most
computers should not have any problems dealing with jpeg decompression,
but the Amiga is a now an "Amiga vieja" (old lady friend), and that
explains more than you might realize.

You might recall back in the good old days, that JPEG decoding modules
were being upgraded almost as often as Vuescan.  That situation was
sorted out when the system was finalized, but not so simple with the
Amiga.

I will explain the rest to you in private email, since this is OT.  But
the thing you need to know is that JPEG decompressors now used are
standardized, and you will see little, if any difference between them.

Art


Richard Starr wrote:


 >
 > My question has to do with decoding jpeg.  I found that a printing 
utility on my
 > Amiga decoded a file with much more noise along boundaries than one 
on my Mac
 > did, using the same jpeg file.  This suggests that there are 
different decoders
 > and different results. Is this true?  Are there programs that should 
be avoided
 > in decoding jpegs for display or printing?
 >
 > Rich

Re: filmscanners: OT: JPEG on Amiga

[Richard Starr]

--- You wrote:
I will explain the rest to you in private email, since this is OT.  But
the thing you need to know is that JPEG decompressors now used are
standardized, and you will see little, if any difference between them.

Art
--- end of quote ---
That explains it and does answer my question exactly.   The package I used when
I saw the problem was TurboPrint which cost about $80 and did a pretty good job
driving the Epson at the time.  I wonder if they've upgraded their jpeg
decompressor in a later version.

Vuescan upgrades do seem amazing.  I fianlly downloaded it to my SuperMac last
night and it would not run, even locked up the computer.  Constant revision can
do that sort of thing.  Wait until the next microscopic revision.  I watched
that kind of responsive development with the Picasso driver software on the
Amiga and it was actually very satisfying,though a little frustrating at times,
when a new version accidently undid something that had been stable for months. 
That's how it works.

Thanks again,
Rich