Uploading digital photos

[ronnie gauthier]

Llama,
You may know a bushell basket about linux but you should bone up on
graphics. The lossy compression used by jpg's runs its algorithm
everytime the graphic is saved. The algorithm works by sampling 8x8
pixel blocks, the sampling changes each save and the algorithm by its
nature compresses each save so you have loss each save. By 1:1 you must
mean 100%, but it doesn't matter. The compression runs each time the
file is saved and no amount of linux know-how will change that, unless
you write your own algo.


On Wed, 30 Oct 2002 09:48:15 -0500 (EST)
Net Llama! <netllama at linux-sxs.org> wrote:

>On Wed, 30 Oct 2002, ronnie gauthier wrote:
>> For the average use there is not much difference...except for one
>> thing,and it can make a great differnece in the final outcome.
>>
>> TIFF is a loss-less format...JPG is not.
>> Graphics apps compress a jpg *everytime* it is saved. So if you
>import> from your cam as a jpg and them play around with it and resave
>it four> or five times...well...
>
>This is untrue.  xv allows you to select the compression ratio when
>saving.  You can set it to 1:1, and get zero compression over the
>current. I'd be surprised if apps like The Gimp didn't have the same
>functionality.
>
>-- 
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>Lonni J Friedman				netllama at linux-sxs.org
>Linux Step-by-step & TyGeMo		     http://netllama.ipfox.com
>
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