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[filmscanners] Re: JPEG2000 > Paul



Thanks for the link Robert. I've just tried it. It compressed a 55mb
Photoshop file into a lossless 10mb .jp2 file.
Is it really lossless ? If so, people need to know about this.
Cheers,
Andre


----- Original Message -----
From: "Robert Meier" <filmscanner@meierlim.com>
To: <am1000@videotron.ca>
Sent: Sunday, February 02, 2003 6:28 PM
Subject: [filmscanners] RE: JPEG2000 > Paul




>-----Original Message-----
>From: filmscanners_owner@halftone.co.uk
> However, it hasn't yet found its way into
>Photoshop, so you need to use a plug-in to load and save JPEG2000 files.
>Perhaps free ones exist, but I haven't seen any.

http://www.fnordware.com/j2k/ This one is free. AFAIK this one is based on
kakadu which is one of the best and cheapest j2k codecs available. There is
another free PS plug-in one but I forgot the URL.

> I use LuraWave's,
>which was
>fairly inexpensive.

I tested their codec about 1/2 years ago. It's one of the slowest j2k
encoders I have found. Also their customer service is pretty bad and prices
for the SDK are quite steep.

>As to quality, JPEG2000 gives better quality than regular JPEG for a given
>amount of compression, or better compression for a given quality.

It's only minimal for low compression ratios. Regarding compression ratios
j2k shines for high compression ratios.

Robert

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