Gunstar Posted November 21, 2017 Share Posted November 21, 2017 (edited) If you want to have a crack at it, here's what I used as input. I thought I'd resized it to a suitable size but apparently not. Yosemite1.jpg Here is my version. Cropped to 4:3 ratio, Altirra palette, YUV color distance, contrast 15, no dither, 1024 solutions, 2 threads, smart start, 50 million evaluations. All else at default levels. 49 colors. Yosemite2.xex Edited November 21, 2017 by Gunstar 12 Quote Link to comment Share on other sites More sharing options...
a8isa1 Posted November 22, 2017 Share Posted November 22, 2017 (edited) Gunstar, if you don't mind would you please give this PAL picture a try on real hardware? It's still a WIP but it's close to done (I hope). Program cuba_56chevy_PAL.xex Palette pal_241_15start_30sat.zip Typical command atari800 -windowed -pal -palettep pal_241_15start_30sat.pal -run cuba_56chevy_PAL.xex Edited November 22, 2017 by a8isa1 7 Quote Link to comment Share on other sites More sharing options...
+Stephen Posted November 22, 2017 Share Posted November 22, 2017 Gunstar, if you don't mind would you please give this PAL picture a try on real hardware? It's still a WIP but it's close to done (I hope). cuba_56chevy_atari800_screenshot.png Program cuba_56chevy_PAL.xex Palette pal_241_15start_30sat.zip Typical command atari800 -windowed -pal -palettep pal_241_15start_30sat.pal -run cuba_56chevy_PAL.xex Looks awesome on the PVM here! 5 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted November 22, 2017 Share Posted November 22, 2017 (edited) Gunstar, if you don't mind would you please give this PAL picture a try on real hardware? It's still a WIP but it's close to done (I hope). cuba_56chevy_atari800_screenshot.png Program cuba_56chevy_PAL.xex Palette pal_241_15start_30sat.zip Typical command atari800 -windowed -pal -palettep pal_241_15start_30sat.pal -run cuba_56chevy_PAL.xex Sure...I'm not sure what the command line is for though, is that for RastaConverter command line? I use the GUI front, so I don't use commands. Edit: Looks good on my setup! The colors all look good, bright red car. looks even better in real life than the screen shot here. The greens are more olive colored than in the emulator. There's a bit of red banding in the trees that doesn't show up on your screen shot. Of course I have been playing with my 1200XL's color pot recently and may not have reset it perfectly. Edited November 22, 2017 by Gunstar 5 Quote Link to comment Share on other sites More sharing options...
a8isa1 Posted November 22, 2017 Share Posted November 22, 2017 (edited) Sure...I'm not sure what the command line is for though, is that for RastaConverter command line? I use the GUI front, so I don't use commands. Edit: Looks good on my setup! The colors all look good, bright red car. looks even better in real life than the screen shot here. The greens are more olive colored than in the emulator. There's a bit of red banding in the trees that doesn't show up on your screen shot. Of course I have been playing with my 1200XL's color pot recently and may not have reset it perfectly. Ugh! Banding is always a concern but the red at the edge of the shadow of the Chevy is more of an issue. That's false color. I didn't see it in the emulator. Using the regular palettes. Command was just the invocation of the emulator, Atari800, from which I get screens. Users need my palette to get the same saturated colors in my image (if not using real hardware). [EDIT] Give my palette a try for Rastaconverter. My palette has lowered contrast. I find I always need at least " /contrast=15". If you use "/S=1" you will get usuable test renderings almost immediately (well, in a couple of minutes). If you get bright pink pixels where they don't belong then /dither_val is too strong. If you get charcoal gray pixels prominent in dithers (where gray doesn't belong) try combinations of lower gamma and higher contrast. This tip seems to work best with 'chess' and 'line' dithers. Less so with 'jarvis'. Not at all with 'knoll' Edited November 22, 2017 by a8isa1 2 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted November 22, 2017 Share Posted November 22, 2017 (edited) In the screen shot I took above, the grays have a blue tinge to them from my camera phone, that is not there in real life on my monitor, my monitor's grays are identical to the emulator screen shot. Edited November 22, 2017 by Gunstar Quote Link to comment Share on other sites More sharing options...
Gunstar Posted November 22, 2017 Share Posted November 22, 2017 (edited) Command was just the invocation of the emulator, Atari800, from which I get screens. Users need my palette to get the same saturated colors in my image (if not using real hardware). [EDIT] Give my palette a try for Rastaconverter. My palette has lowered contrast. I find I always need at least " /contrast=15". If you use "/S=1" you will get usuable test renderings almost immediately (well, in a couple of minutes). If you get bright pink pixels where they don't belong then /dither_val is too strong. If you get charcoal gray pixels prominent in dithers (where gray doesn't belong) try combinations of lower gamma and higher contrast. This tip seems to work best with 'chess' and 'line' dithers. Less so with 'jarvis'. Not at all with 'knoll' Invocation understood. I totally agree about almost always needing a minimum of 15 contrast, but that's under the usual palettes, not yours, so I'll probably need to go straight to 30 for my liking. Though I often go as high as 30-50 and once in a while higher, Thanks for the dithering tips, the issues you talk about is exactly why I rarely use dithering, and when I do, it's usually set at .5 or .6 (less than 1 default). Because when viewed on real hardware many dithers blend strangely or create strange colored baring/banding instead of dithering. The other reason being I feel the image resolution of 160 is just too low for dithering in most circumstances. And dithering really isn't dithering on the output image, it's done on the destination image and then Rastaconverter copies the dithering in the same way it does everything else, losing detail, which never looks as good in the end as the destination dithering. All that said, I'm hopeful to try some of your suggestions for dithering. Edited November 22, 2017 by Gunstar Quote Link to comment Share on other sites More sharing options...
Gunstar Posted November 22, 2017 Share Posted November 22, 2017 (edited) Stagecoach. 41 colors. Stagecoach.xex Edited November 22, 2017 by Gunstar 13 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted November 23, 2017 Share Posted November 23, 2017 Riding Shotgun. 49 colors. RidingShotgun.xex 4 Quote Link to comment Share on other sites More sharing options...
a8isa1 Posted November 24, 2017 Share Posted November 24, 2017 Grew tired waiting for this picture to get better. Moving on to the next one(s)... a8isa1_maine_coast.xex a8isa1_maine_coast_PAL.xex 8 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted November 24, 2017 Share Posted November 24, 2017 (edited) It looks good, in the .png image above, and probably on an emulator and NTSC machines...but not the PAL version, sorry. half the colors fit, half do not. I spent some time making sure my color pot was adjusted right, checking it with multiple images I have made. Below is what your .xex looks like on real PAL equipment, with video upgrade. With the caveat that my camera changes colors too, the blues in the sky are different than what you see in the image below, most of the rest is relatively close. Of course when I view the NTSC version, the sky and water are all different shades and hues of green. So you've sort of found a 50/50 NTSC/PAL palette. Edited November 24, 2017 by Gunstar Quote Link to comment Share on other sites More sharing options...
a8isa1 Posted November 24, 2017 Share Posted November 24, 2017 It looks good, in the .png image above, and probably on an emulator and NTSC machines...but not the PAL version, sorry. half the colors fit, half do not. I spent some time making sure my color pot was adjusted right, checking it with multiple images I have made. Below is what your .xex looks like on real PAL equipment, with video upgrade. With the caveat that my camera changes colors too, the blues in the sky are different than what you see in the image below, most of the rest is relatively close. Of course when I view the NTSC version, the sky and water are all different shades and hues of green. So you've sort of found a 50/50 NTSC/PAL palette. I used the NTSC version of the output.png file to source a quick conversion to PAL. Perhaps I can't do that. However, even with default PAL palettes with both emulators I see reasonable presentations. With my prior picture I went from PAL to NTSC. Quick conversions saved many hours of processing. Really hard to judge what I do when I don't own any PAL gear. 1 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted November 24, 2017 Share Posted November 24, 2017 Yeah, I was going to suggest not bothering trying to do PAL stuff without the gear. Or just do two of each like I did for a while with standard PAL and NTSC palettes. Quote Link to comment Share on other sites More sharing options...
Roydea6 Posted November 25, 2017 Share Posted November 25, 2017 Grew tired waiting for this picture to get better. Moving on to the next one(s)... maine_coast_screenshot.png a8isa1_maine_coast.xex a8isa1_maine_coast_PAL.xex This picture does not exit to DOS with any key START or Trigger. And so needs a coldstart with real hardware. 2 Quote Link to comment Share on other sites More sharing options...
a8isa1 Posted November 25, 2017 Share Posted November 25, 2017 (edited) This picture does not exit to DOS with any key START or Trigger. And so needs a coldstart with real hardware. I don't know how the base display code works. I just convert the pictures and run MADS assembler against the supplied source, "no_name.asq", which builds the executable from all the output.* files. Edited November 25, 2017 by a8isa1 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted December 1, 2017 Share Posted December 1, 2017 (edited) Diesel-Punk Dirigible. 40 colors. DieselPunkDirigible.xex Edited December 1, 2017 by Gunstar 9 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted December 2, 2017 Share Posted December 2, 2017 (edited) This one is a WIP, I'm showing this version now, because it's far beyond what I usually stop conversions at. This one is over 305 million evaluations. The remarkable thing for me is no line errors yet! I've notice these errors appearing less often and much later, since I have started using more than a thousand solutions in my conversions. I've started a new version of this image now, changing some parameters, because I'm still not happy with the output even at this point. This image is a tuff cookie; a picture of an original pastel or water color artwork (I think pastel really, but I could be wrong). Screen shot and source image also attached, if anyone else wants to take a crack at it. Resized and cropped to 4:3. 320x240. If anyone wants the pre-resized original image, let me know and I'll post it. '72 Ferrari. 92 colors. 72Ferrari.xex Edited December 2, 2017 by Gunstar 2 Quote Link to comment Share on other sites More sharing options...
Rybags Posted December 2, 2017 Share Posted December 2, 2017 The problem I see is it looks like it's full of errors even though it's not. Maybe it'd look better if the road was just shades of grey? Quote Link to comment Share on other sites More sharing options...
Gunstar Posted December 2, 2017 Share Posted December 2, 2017 (edited) I think the issue is it's more an impressionistic work of art, so true detail is at a minimum anyway. and it's not picking up all of what there is. But I'm going to keep trying... But go ahead and explore what you said, if you want, as I'm still not into changing the original to try and make it fit the Atari. Nothing against doing it, I just don't want too. Edited December 2, 2017 by Gunstar Quote Link to comment Share on other sites More sharing options...
Gunstar Posted December 2, 2017 Share Posted December 2, 2017 I forgot to mention that '72 Ferrari above is the first re-attempt ( attempted it before, back when I was doing images of cars, and gave up for a while) with all settings at default except Altirra palette and 1024 solutions. Quote Link to comment Share on other sites More sharing options...
+StaxX28 Posted December 3, 2017 Share Posted December 3, 2017 (edited) Another title screens serie: StaxX_Rastan.xex StaxX_Nemesis.xex StaxX_ChaseHQ.xex as usual, all pics were captured from a real hardware (600XL PAL) Edited December 3, 2017 by StaxX28 10 Quote Link to comment Share on other sites More sharing options...
José Pereira Posted December 3, 2017 Share Posted December 3, 2017 Another title screens serie: StaxX_Rastan.png StaxX_Rastan.xex StaxX_Nemesis.png StaxX_Nemesis.xex StaxX_ChaseHQ.png StaxX_ChaseHQ.xex as usual, all pics were captured from a real hardware (600XL PAL) Great looking ones!... Now the only thing we're missing are the games... 2 Quote Link to comment Share on other sites More sharing options...
Sheddy Posted December 4, 2017 Share Posted December 4, 2017 (edited) I think the issue is it's more an impressionistic work of art, so true detail is at a minimum anyway. and it's not picking up all of what there is. But I'm going to keep trying... But go ahead and explore what you said, if you want, as I'm still not into changing the original to try and make it fit the Atari. Nothing against doing it, I just don't want too. Like you and Rybags say it's interesting that Rasterconverter over exaggerates that Impressionist style. Maybe reduced saturation and contrast? Edited December 4, 2017 by Sheddy Quote Link to comment Share on other sites More sharing options...
MARIO130XE Posted December 4, 2017 Share Posted December 4, 2017 Hey ho. Another xmas style conversion by me. Called XMAS-Lighthouse. Maybe you like. Greetings. Mario130xe_XMAS-Lighthouse.xex 13 Quote Link to comment Share on other sites More sharing options...
a8isa1 Posted December 5, 2017 Share Posted December 5, 2017 Hey ho. Another xmas style conversion by me. Called XMAS-Lighthouse. Maybe you like. Mario130xe_XMAS-Lighthouse.png Greetings. Thanks for reminding me that I had started xmas themed conversions but have to start over using a different palette. Quote Link to comment Share on other sites More sharing options...
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