[casual_games] Procedural rendering - again

Phil Steinmeyer psteinmeyer at newcrayon.com
Tue Jan 10 09:30:32 EST 2006

I experimented with Jpeg 2000 in the course of doing my game.  I found that 
for the types of images I was using (colorful, somewhat 'soft' backgrounds 
in Bonnie's Bookstore), that Jpeg 2000 was actually inferior at any given 
compression ratio to regular Jpeg.

>From the examples on the Jpeg 2000 homepage, it seems to work better than 
regular Jpeg for high contrast images with sharp edges, especially text. 
But since most of us don't embed much if any text into 
backgrounds/textures/images, the benefits may be non-existent.

----- Original Message ----- 
From: "Alex Saveliev" <alex at j2k-codec.com>
To: "IGDA Casual Games SIG Mailing List" <casual_games at igda.org>
Sent: Tuesday, January 10, 2006 8:27 AM
Subject: Re[2]: [casual_games] Procedural rendering - again

> Hello James,
> Monday, January 9, 2006, 10:18:51 PM, you wrote:
> JCS> In the games I have worked on (such as Ricochet and Big Kahuna) we 
> have what
> JCS> I consider to be rich graphics in plentiful quantities. There is not 
> a ton
> JCS> of contents but we don't skimp on the content.  Most of the art is 
> JCS> compressed bitmaps and it ends up being about 35% to 50% of the 
> overall
> JCS> download size.
> Did you consider JPEG2000? In the Ricochet there are lots of JPEG
> artifacts that really annoy me (especially in the menu). Dinner Dash
> is another example of over-compressed graphics (it looks rather bad, in
> my opinion).
> I've created a small, easy-to-use JPEG2000 decoder for myself and it
> proved to be a good thing - you get 25-35% smaller graphics and less 
> annoying
> compression artifacts.
> I am selling it now as a commercial product. It is a DLL but the static
> linking will be available soon (for an additional price).
> Take a look:
> http://j2k-codec.com
> I think it many interest many game developers. It has some game
> developers oriented features (like J2K_Frames class).
> Any suggestions are also welcomed :)
> -- 
> Best regards,
> Alex                            mailto:alex at j2k-codec.com
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> Casual_Games at igda.org
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