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Philsan

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Some album covers.

 

Let's start easy ;)   Metallica - Metallica (aka the Black Album)

 

ivop_mm.png.4bb68d16c8ce7f2e1e428bb3e569c0e4.png

 

Resolved to less than 0.16 norm dist :D

 

 

 

Metallica - And Justice For All

 

ivop_ajfa.png.9a2fa2909d8cc0031b7de6f90da31b0e.png

 

 

Slayer - Reign In Blood

 

ivop_rib.png.1bbd2739cd5125e78b16844458b6a8f7.png

 

 

Megadeth - Rust In Piece

 

ivop_rip.png.9849f1dc43fca95055750a8e51cce94a.png

 

 

The last one I struggled with ever since Rastaconverter was released, but this is finally a conversion I like. Sort of ;)

 

 

ivop_ajfa.xex ivop_mm.xex ivop_rib.xex ivop_rip.xex

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Rybags-Ferrari85.xex

 

That's about 8 minutes worth of processing, Floyd dither, no other option changes or modification to the pic beforehand.

Looks OK in the preview while the work's done but not the greatest once you see it up close.

Red is probably the worst colour to try and represent on our computer in such a pic, and the saturation loss at higher lumas doesn't help either.

 

output.png.e6e5229848d30815296bdd531a14d2b9.png

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Running now.  It started with a distance over 20 is now about 17 where the first one started around high 5.  It's been a while but generally under 14 means it'll usually be a good result.

 

OK, low 16 now and it's looking better but some undesirable scanline artifacts.  I'll try and give it an hour or so and post later.

Processing with no mod or option other than Flloyd dither.

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Rybags-Villeneuve-Williams2.xex

 

That's after about 2 hours active with 6 threads, 330 million evaluations and distance down to about 13.31.  To the point where it'd often go almost a minute without any found improvement.

Would be nice if the yellow band at the bottom of the visor was there.  This pic could do with some massaging before going in - first thing would be to get rid of the watermark, then probably get rid of the brown in the grass then even out the tyres a bit which might cut down the scanline artifacts and free up a bit of colour to get that yellow into the helmet.

 

56 unique colours

 

 

output.png.624ce52fc6fdfaffdf5eb8b69bee4e8a.png

Edited by Rybags
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7 hours ago, Jacques said:

I think yours is missing some part of original picture, that can be see on the left side.

That's on purpose. The original isn't a strong aspect ratio match for the Atari, so I cropped it with a slight enlargement of the car, which is the important detail in the picture. The closer the picture focuses on what's important, the more color/detail you get out of that part in the conversion, even providing for a mask used within Rasta.

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Cropped to fit Atari aspect ratio. 109 million evaluations. 2 threads, 12288 solutions, norm. Dist. 4.1, YUV color distance, less initial state, no dither, 22 contrast, Altirra palette.

 

Ferrari F1. 39 colors.

FerrariF1a.png

FarrariF1a.xex

Edited by Gunstar
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1 hour ago, amarok said:

Very nice! Some think greyscale is sort of cheating, but they can still be very challenging. Sure, the Black Album (Metallica) was easy1, but try Janet Jackson's Rythm Nation 1814. Haven't figured it out yet. I want the whole aura/halo/glare around here head without vissible horizontal lines. No PMG blocks. Either with or without dither. Even downscaling to 6 (!) colors, I can't get it to look good.

 

This one is great!! You really have to look for slight deviations.

 

1 It was kind of a joke. I almost did Prince's Black Album ;)

Edited by ivop
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Next triplet of albums :)

 

 

Duran Duran - Rio

29 colors

 

ivop_duran-duran-rio.png.17b9dd369a7b44efb3762f1dcd3eb785.png

 

 

 

Grace Jones - Island Life

34 colors

 

ivop_grace-jones-island-life.png.d55ae004659325ed6e7e28a1aef02f73.png

 

This one was especially challanging. But I can't spot any line artifacts any more. The white line on the right is in the original.

 

 

 

The Velvet Underground & Nico - The Velvet Underground & Nico

23 colors

 

ivop_vu-banana.png.2b24572815410243063c85a167883a95.png

 

ivop_duran-duran-rio.xex ivop_grace-jones-island-life.xex ivop_vu-banana.xex

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