Image conversion...

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Dal
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Image conversion...

Post by Dal »

Does anyone know of a good app (Falcon, ST, Mac or Windoze) that can convert JPG and GIF images into the Atari IMG format?

I have a few background images that I would like to convert to work on the Atari. So the app in question would need to be capable of converting to 1, 2, 4 and 8 biplane IMG files.
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Post by Dal »

Oh - needs to support png as well.....
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Post by Mug UK »

XNview (on Windows and I think there's a native Atari version) seems to be able to read in Atari formats but not a user of it so couldn't comment on it's export options.
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Post by unseenmenace »

I just had a look at my XNView and whilst it reads most Atari formats I don't think it can save GEM IMG's. It can save Degas PI1 and Amiga IFF if thats any help.
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Post by Dal »

GEM IMG appears on the supported formats list. I'll have a play with it and see if I can export JPEGs to it. The concern is whether the number of bitplanes can be set for those who run in different colour modes.....

I suppose the alternative is to convert to spectrum 512? Then use spectrum 512 to save each one individually as img (can't remember if img is supported - it's been too many years).
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Post by unseenmenace »

The only IMG I can see in the Save list is Vivid Raytracer and that only seems to support True Colour anyway.
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Post by retinal scan »

Imagecopy 4 will do that trick in 2,3,4,5,6,7,8 & 24 bit depths, I have tried it with JFIF95->IMG and GIF->IMG images and it works for me.
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Post by retinal scan »

Sorry but can't help with PNGs. I think these were defined after the ST retired? :cry:
If you run Linux or Mac OSX, the GIMP may be of some help or Paint shop pro 3 or less for W9x.
BTW Imagecopy 4 is ST/STE/Falcon compatible running TOS :)
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Re: Image conversion...

Post by Dal »

Excellent - yes I had another look at the doc for Nconvert and it only reads GEM IMG. So looks like ImageCopy will be the way forward after I've converted the PNG's into JPG (no problem).

Question now is does anyone know where I can get ImageCopy 4?
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Re: Image conversion...

Post by Dal »

No worries - I found imagecopy on PlanetEmu. Thanks for the help!
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Re: Image conversion...

Post by tof »

Painshop Pro X read/write IMG PNG and GIF pictures.
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Re: Image conversion...

Post by darklight »

Word of caution - convert a .PNG file to .GIF, not .JPG.

Unless it is a photo, images will compress just as well into .GIF, and you will not lose definition / gain artifacts, which is a side effect of .JPG compression.
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Re: Image conversion...

Post by Dal »

darklight wrote:Word of caution - convert a .PNG file to .GIF, not .JPG.

Unless it is a photo, images will compress just as well into .GIF, and you will not lose definition / gain artifacts, which is a side effect of .JPG compression.

I converted to JPEG but without compression....
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Re: Image conversion...

Post by 030falcon030 »

I didn't think psp could do IMG files?
Im sure I've tried it before and it didn't?
hmmm:/
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Re: Image conversion...

Post by Paolo »

There isn't any lossless JPEG (well, sort of). There has been a actually lossless JPEG format, but it never had any popularity, and no application supported it (unless it was an experimental one).
Then there is this JPEG-LS format (yawn another lossless wannabe leader) with HP highly involved, called LOCO. There is an Adobe plugin for it, but I don't know how widespread is it (and how useful is it, too).

However, Xnview deals JLS files, so... :-)
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Re: Image conversion...

Post by tof »

030falcon030 wrote:I didn't think psp could do IMG files?
Im sure I've tried it before and it didn't?
I have just try to read/write a GEM IMG image and it seems OK. I haven't try on an atari just on windows..
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Re: Image conversion...

Post by joska »

darklight wrote:Word of caution - convert a .PNG file to .GIF, not .JPG.

Unless it is a photo, images will compress just as well into .GIF, and you will not lose definition / gain artifacts, which is a side effect of .JPG compression.
But since GIF has an 8 bit colour palette, you will loose colour definition. Banding or dithering will IMHO affect the image quality more than jpeg compression.
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Re: Image conversion...

Post by darklight »

joska wrote:
darklight wrote:Word of caution - convert a .PNG file to .GIF, not .JPG.

Unless it is a photo, images will compress just as well into .GIF, and you will not lose definition / gain artifacts, which is a side effect of .JPG compression.
But since GIF has an 8 bit colour palette, you will loose colour definition. Banding or dithering will IMHO affect the image quality more than jpeg compression.
True, but if it isnt a photo then the chances of it containing > 256 colours / you noticing banding is less. If there are things like large areas with colour gradients, then yes, you'll see banding.

Horses for courses I guess - depends on the image, and depends on the jpg compression level used.
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Re: Image conversion...

Post by Decky »

Dal_1978 wrote:No worries - I found imagecopy on PlanetEmu. Thanks for the help!
Can you provide a line to the Image Files, or post them here!


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Re: Image conversion...

Post by Dal »

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Re: Image conversion...

Post by Decky »

Great :D - Thanks a lot. Didn't know that site existed, found a few more I was after!!!
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Re: Image conversion...

Post by DarkLord »

Decky wrote:Great :D - Thanks a lot. Didn't know that site existed, found a few more I was after!!!
Yep, nice place. You'll like ImageCopy - I used it to convert a pic of Gandolph for use as a wallpaper/desktop
on my Falcon.
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Re: Image conversion...

Post by dexterslab »

i would normally use GemView on the atari it can save in various formats like gif, jpg, tiff and bmp
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