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#1626 kiwilove OFFLINE  

kiwilove

    Dragonstomper

  • 849 posts
  • Location:Dunedin, New Zealand

Posted Tue Apr 17, 2018 8:58 PM

I'm no expert nor regular user of Rasterconverter - and would like to comment the following...

 

Because of the limited colours and resolution of the Atari graphics mode - if you start with pictures which are close to this already - you should have greater success - so to speak?  And it is when you are using normal pictures/photographs as such - it is so much harder for any decent result to happen - without any of usual faults Rasterconverter ends up showing - those visible horizontal bands.  People are only posting their successful conversions here - so you don't see the various failures that typically happen.

 

It is an amazing program - when you see what it can do - as in the various examples posted.

 

It is very much a lottery as to what picture ends up looking great - and usually you do see it pretty quickly - that you only have it running over a long period of time - just so as for it to clean up on some important detail here and there.

 

The good thing of course - is that you can have it doing this in the background - while you are doing other things on your laptop?  And you can even have up to 3? windows of Rasterconverter running at the same time - if you wish to, if your laptop can handle it?

 

Harvey



#1627 Rybags ONLINE  

Rybags

    Quadrunner

  • 15,761 posts
  • Location:Australia

Posted Tue Apr 17, 2018 11:30 PM

Certain pic types work better than others.

If the detail and colour changes are more oriented towards vertically, e.g. graduated mountain ranges in a sunset then it deals with it better than something like a rainforest on the left with waterfall in the middle and beach on the right.

 

High dynamic range should be better than low, ie - if the luminances are spread about rather than close shades.

 

When running the program, the destination shows a "better than best case scenario" - so you know what you'll end up with will resemble it in some way but not be as good.  So if the destination looks crap it's a quick and easy way to know to just quit and either do some preprocessing of the image or try different dithering settings.

 

The program allows selecting how many threads to run.  You'd probably get better throughput by single-streaming images rather than doing multiples at once though that said the nature of the thing is that you quit when a pic looks good and optionally resume processing after testing it out.  To that end, then you may as well parallel process.

 

I think you'd need to make extra copies of the RC program directory as it saves work files.  Alternatively you might be able to just use shortcuts with different startup directories - unsure, the program's sufficiently small to just have multiple copies of it.

 

# of threads - if you have e.g. a quad-core i7 with hyperthreading enabled then in theory you'd get best throughput on a single job by running 8 threads, though it'd bog down anything else trying to run on the machine.  I've found in such cases (like MediaCoder video encoding), run with all but one or two virtual cores active or enable the affinity to all but one or 2 depending on the program.



#1628 Irgendwer OFFLINE  

Irgendwer

    Stargunner

  • 1,379 posts
  • Location:Germany

Posted Tue Apr 17, 2018 11:47 PM

...

 

 

...

 

 

Round 2

 

FIGHT!

 

Bruce.png

 

;)

Attached Files



#1629 Gunstar ONLINE  

Gunstar

    Gunstar

  • 9,324 posts
  • Location:Kellyville, Oklahoma

Posted Mon Apr 30, 2018 9:31 PM

Breaking Beyond. 49 colors.

 

Relativity Of Gravity. 70 colors.

 

Spring Loaded! 49 colors.

 

64 Galaxie 500. 54 colors.

Attached Thumbnails

  • BreakingBeyond.png
  • RelativityOfGravity.png
  • SpringLoaded!.png
  • 64G500.png

Attached Files



#1630 Gunstar ONLINE  

Gunstar

    Gunstar

  • 9,324 posts
  • Location:Kellyville, Oklahoma

Posted Tue May 1, 2018 5:25 PM

Blue Brook Falls. 72 colors.

 

Rifle Creek Docks. 46 colors.

Attached Thumbnails

  • BlueBrookFalls.png
  • RifleCreekDocks.png

Attached Files



#1631 Gunstar ONLINE  

Gunstar

    Gunstar

  • 9,324 posts
  • Location:Kellyville, Oklahoma

Posted Wed May 2, 2018 4:31 PM

I've been doing some "spring cleaning" of late with my Rastaconverter file folders, dusting off some pictures I never got around to converting, a final judgement of some images I was never satisfied enough with to release before, then keeping or disposing  of them and lots  of old source images. The recent images I've posted are new conversions, from old sources, and here are a couple of old conversions I sat on, not satisfied enough to release before, but what the hell. :P  At least I don't think I posted these before...sorry if I have. 

 

Battle For Sansara (Andromeda). 32 colors.

 

Ancient Spires. 46 colors.

 

Attached Thumbnails

  • BattleForSansara.png
  • AncientSpires.png

Attached Files



#1632 SpikedRN OFFLINE  

SpikedRN

    Combat Commando

  • 9 posts
  • Location:USA

Posted Wed May 9, 2018 12:58 AM

Ciri from The Witcher III -- 175 million evaluations. The output looks fairly good on my PC, but the colors are very washed out on my NTSC 800xl. Maybe I'm not using the correct palette?

 

SpikedRN_Witcher3_Ciri.png

Attached File  SpikedRN_Witcher3_Ciri.xex   22.21KB   34 downloads

output.png-src.png



#1633 Gury OFFLINE  

Gury

    Stargunner

  • 1,256 posts

Posted Thu May 10, 2018 2:39 AM

At age of 93 Miki Muster, one of the greatest cartoon and comics artists from Slovenia, died. He is well known of adventures of Zvitorepec, Trdonja and Lakotnik. Many of us enjoyed and still do enjoy reading these comics and remember them well from our childhood.

 

Link to the sad news.

 

Here is original and converted pic of our heroes:

 

mmztl01.jpg mmztl01.png

Attached Files


Edited by Gury, Thu May 10, 2018 2:40 AM.


#1634 a8isa1 OFFLINE  

a8isa1

    Stargunner

  • 1,511 posts

Posted Thu May 10, 2018 10:04 AM

Revisiting strong dithering (knoll, dither_val=8.0).  I'm shooting for lighting versus detail.

 

a8isa1_lighthouse_2113179_screenshot.png

Would someone with real NTSC hardware try this and post comments?   Thank you.

 

If you wish to view with an Emulator try Atari800 using one of my palettes (see my sig)

 

In Altirra I don't know if importing a palette is possible (I can't find the option).  Select NTSC mode and in 'adjust colors' default XL, hue start -44, 24.1 degrees, and Saturation 30.

Attached Files


Edited by a8isa1, Thu May 10, 2018 10:52 AM.


#1635 a8isa1 OFFLINE  

a8isa1

    Stargunner

  • 1,511 posts

Posted Thu May 10, 2018 12:14 PM

This one worked very well. 

 

Slight Chess dither, dither_val=0.5, dither_rand=1.2.

 

a8isa1_brick_lighthouse.png

NTSC palette (see my sig).

 

Attached Files



#1636 SpikedRN OFFLINE  

SpikedRN

    Combat Commando

  • 9 posts
  • Location:USA

Posted Thu May 10, 2018 7:15 PM

 

Would someone with real NTSC hardware try this and post comments?   Thank you.

 

I'll give them a try later when I get a chance. I did a few images using your NTSC 30 saturation palette @a8isa1

 

Seeing how many colors I could get in one image. 135 million evals with NTSC palette.

SpikedRN_color_gradient_135m.png

Attached File  SpikedRN_color_gradient_135m.xex   22.08KB   18 downloads

Gradient1.png

 

Another try at Ciri but using an NTSC palette this time. Skin tones look much better on my 800xl than the other one I did.

SpikedRN_Witcher3_Ciri.png

Attached File  SpikedRN_Witcher3_Ciri_NTSC.xex   22.06KB   18 downloads

 

Here's one of Jupiter. 100M evals with laoo palette and knoll dither.

Jupiter.100M.laoo.cie94.knoll.png

Attached File  Jupiter.100M.laoo.cie94.knoll.xex   18.61KB   25 downloads

Jupiter_index64.png



#1637 SpikedRN OFFLINE  

SpikedRN

    Combat Commando

  • 9 posts
  • Location:USA

Posted Thu May 10, 2018 9:16 PM

Here are some examples showing the output of different palettes using a common image as input. Using these should allow you to find a palette that most closely matches the actual output on real hardware. Common settings: ciede with no dithering.

 

Source image

06b.jpg

 

Attached File  Colors_ciede_altirra.xex   18.85KB   15 downloads

Colors_ciede_altirra.png

 

Attached File  Colors_ciede_atari800winplus.xex   18.85KB   13 downloads

Colors_ciede_atari800winplus.png

 

Attached File  Colors_ciede_Default.xex   18.7KB   14 downloads

Colors_ciede_Default.png

 

Attached File  Colors_ciede_g2f.xex   18.88KB   13 downloads

Colors_ciede_g2f.png

 

Attached File  Colors_ciede_jakub.xex   18.71KB   13 downloads

Colors_ciede_jakub.png

 

Attached File  Colors_ciede_laoo.xex   18.65KB   13 downloads

Colors_ciede_laoo.png

 

Attached File  Colors_ciede_NTSC.xex   18.73KB   11 downloads

Colors_ciede_NTSC.png

 

Attached File  Colors_ciede_NTSC30.xex   18.87KB   12 downloads a8isa1 NTSC saturation 30

Colors_ciede_NTSC30.png

 

Attached File  Colors_ciede_NTSC40.xex   18.7KB   12 downloads a8isa1 NTSC saturation 40

Colors_ciede_NTSC40.png

 

Attached File  Colors_ciede_NTSC50.xex   18.85KB   13 downloads a8isa1 NTSC saturation 50

Colors_ciede_NTSC50.png

 

Attached File  Colors_ciede_OlivierP.xex   18.81KB   13 downloads

Colors_ciede_OlivierP.png

 

Attached File  Colors_ciede_Real.xex   18.29KB   12 downloads

Colors_ciede_Real.png

 

Attached File  Colors_ciede_Xformer.xex   18.63KB   16 downloads

Colors_ciede_Xformer.png


Edited by SpikedRN, Thu May 10, 2018 9:19 PM.


#1638 Gury OFFLINE  

Gury

    Stargunner

  • 1,256 posts

Posted Sat May 12, 2018 2:44 AM

Some more of Zvitorepec, Trdonja and Lakotnik:

 

mmztl02.png mmztl03.png

 

 

Attached Files



#1639 Gunstar ONLINE  

Gunstar

    Gunstar

  • 9,324 posts
  • Location:Kellyville, Oklahoma

Posted Mon May 14, 2018 4:23 PM

Amber Afternoon. 43 colors.

 

Covered Bridge. 60 colors.

 

Rural Home. 69 colors.

 

 

Attached Thumbnails

  • AmberAfternoon.png
  • CoveredBridge.png
  • RuralHome.png

Attached Files



#1640 RAM OFFLINE  

RAM

    Star Raider

  • 54 posts

Posted Tue May 15, 2018 1:33 PM

It's always a good day when I visit AA and see Gunstar has posted some more pictures!



#1641 Gunstar ONLINE  

Gunstar

    Gunstar

  • 9,324 posts
  • Location:Kellyville, Oklahoma

Posted Thu May 17, 2018 7:57 PM

Find your beach.

 

Ocean Cave. 65 colors.

 

 

Attached Thumbnails

  • OceanCave.png

Attached Files



#1642 a8isa1 OFFLINE  

a8isa1

    Stargunner

  • 1,511 posts

Posted Thu May 17, 2018 8:35 PM

Find your beach.

 

Ocean Cave. 65 colors.

 

 

Another favorite!  Thanks!



#1643 pirx OFFLINE  

pirx

    Moonsweeper

  • 437 posts
  • Location:Poland

Posted Fri May 18, 2018 2:56 AM

Find your beach.

 

Ocean Cave. 65 colors.

 

this pic is almost gfx compo quality. kudos!!! the previous set with rural homes kixx ass as well. basically perfect use of the technique.


Edited by pirx, Fri May 18, 2018 2:58 AM.


#1644 Rybags ONLINE  

Rybags

    Quadrunner

  • 15,761 posts
  • Location:Australia

Posted Fri May 18, 2018 5:11 AM

In terms of source material definitely not the best picture but in terms of technical compatibility with what RC is capable of and producing a very good result, near unmatched.



#1645 Gunstar ONLINE  

Gunstar

    Gunstar

  • 9,324 posts
  • Location:Kellyville, Oklahoma

Posted Fri May 18, 2018 7:55 AM

Source material makes a huge difference depending on what it is. Ocean Cave is from a photograph, the houses and bridge were from paintings.The source image medium has a huge effect on the final outcome.Photos are much easier to get good results than artistic renderings.



#1646 Gunstar ONLINE  

Gunstar

    Gunstar

  • 9,324 posts
  • Location:Kellyville, Oklahoma

Posted Fri May 18, 2018 8:42 AM

 

this pic is almost gfx compo quality. kudos!!! the previous set with rural homes kixx ass as well. basically perfect use of the technique.

Either way, a compliment to be sure, but when you say "compo" I'm not sure if you are referring to a "competition" or a "composition."



#1647 a8isa1 OFFLINE  

a8isa1

    Stargunner

  • 1,511 posts

Posted Sun May 20, 2018 10:00 AM

This one worked very well. 

 

Slight Chess dither, dither_val=0.5, dither_rand=1.2.

 

attachicon.gifa8isa1_brick_lighthouse.png

NTSC palette (see my sig).

 

PAL version

a8isa1_brick_lighhtouse_PAL_screenshot.png

For intended saturation in Altirra bump it to 45 or in Atari800 use the palette in my sig.

Attached Files



#1648 Heaven/TQA OFFLINE  

Heaven/TQA

    Quadrunner

  • 10,894 posts
  • Location:Baden-Württemberg, Germany

Posted Sun May 20, 2018 1:13 PM

Ocean cave... first I thought its the source gif like
Pic. Awesome.

#1649 Gunstar ONLINE  

Gunstar

    Gunstar

  • 9,324 posts
  • Location:Kellyville, Oklahoma

Posted Sun May 20, 2018 8:48 PM

This one I forgot about and let it run too long, so it has a small line-segment-error (when viewed on a real Atari), but it's small and off to the side, so I didn't feel like re-doing it. Also the first attempt, so it's not as good as it might be, but I think it's good enough.

 

Atari Fuji. 88 colors.

Attached Thumbnails

  • AtariFuji.png

Attached Files


Edited by Gunstar, Sun May 20, 2018 8:55 PM.


#1650 Rybags ONLINE  

Rybags

    Quadrunner

  • 15,761 posts
  • Location:Australia

Posted Mon May 21, 2018 1:15 AM

Nice but too easy for RC - the real challenge would be to do the colour graduations as diagonals and see how it handles that.







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