64 color backdrops

[punkyclown]

Hi, Can anyone point me to some good or interesting 64 color backdrops.  I see lots of nice Workbench images with cool backdrops but I have no idea where to look for any.
Thanks

Brad

[Oldsmobile_Mike]

Hi, Can anyone point me to some good or interesting 64 color backdrops.  I see lots of nice Workbench images with cool backdrops but I have no idea where to look for any.

Well, I would say get ahold of some nice 24-bit bitmaps and then use a copy of AdPro to reduce them down to 64 colors... but given that other thread on that software going on right now, would that just be trolling?  LOL.  :lol:

TL;DR.  ImageFX or other software can do that for you as well.  Heck, I used to have the Rebel 16-color palette mapped in Photoshop on my PC, down to the exact RGB values, and I'd scale images down for my Amiga that way.  

[dschallock]

... and then use a copy of AdPro to reduce them down to 64 colors...

:roflmao::rofl::roflmao:

[vince_6]

I use PPaint to reduce colors and resolution with dithering on.

[punkyclown]

The only trouble with doing this is even though they look good in the graphics program,
when you put them in as a backdrop it displays differently, not as well.  Wish someone
would explain that to me.  Thanks

[Rob]

The only trouble with doing this is even though they look good in the graphics program,
when you put them in as a backdrop it displays differently, not as well.  Wish someone
would explain that to me.  Thanks

Are you making sure you scaled the images to the same size as your workbench screen first?

The scaling routines in art packages may be better than that of the OS.

[Oldsmobile_Mike]

Crop the image to the exact resolution of your Workbench prior to setting it. Color reduction is performed by datatypes, try upgrading to the WarpDT's for better performance. Also check your palette, many optimizations can be made there - e.g., set the image to use the exact same colors as your Workbench. Recommend reading things like mfilos's guide to the Rebel palette (linked to above) for a better understanding.

[vince_6]

Indeed, you must lock some colors as sys default like icons or else the image will look strange.

[Oldsmobile_Mike]

Two other tips:  If you're not already using Peter K.'s icon library, you should:  http://aminet.net/package/util/libs/IconLib_46.4

A new version of it was just uploaded a couple days ago.  This will provide you much faster icon rendering and more accurate color reduction, especially if you're using something like 3.9 GlowIcons or Ken's Icons.

And I assume you know about these options, right?:

[number6]

Hi, Can anyone point me to some good or interesting 64 color backdrops.  I see lots of nice Workbench images with cool backdrops but I have no idea where to look for any.
Thanks

Brad

16 and 256 optimized color palettes that can hardly be optimized any further already exist.
One issue I see mentioned is reserved pens. This depends somewhat on what icon set you are using. For example, for MagicWorkbench you would want to copy the palette for the icons into the first 8 registers and lock the palette.

There's a different path here depending on whether you want to render a specific image with the best palette available for THAT image or...whether you are trying to create the best palette for all images you might use.

example of a locked 64 color palette that accomodates different icon sets

from this thread

The reason your image looks different in WB is the result of WB palette picking, which is horrible.
It gets worse when you load a 2nd picture while still displaying the first, etc.
This is the reason why locked palettes were created. You can't get perfection out of 64 or 256 colors, but by using a locked palette, each picture is basically the identical overall quality, regardless of how many you have showing on the WB simultaneously.

#6

[vince_6]

With a 4 or 5 bit palette you can have some good results too.

4bit
http://s26.postimg.org/h81yfenx5/A600_WB.jpg

5bit
http://s26.postimg.org/omra7s9sp/A1200.jpg

[Yasu]

4bit
http://s26.postimg.org/h81yfenx5/A600_WB.jpg

Where did you find that wallpaper?

[vince_6]

Where did you find that wallpaper?

I think it was from a manga cd that was around for the amiga.
anime_babes.

[Yasu]

Thanks

[NovaCoder]

Two other tips:  If you're not already using Peter K.'s icon library, you should:  http://aminet.net/package/util/libs/IconLib_46.4

Another vote for Peter's icon.library here

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