pps Posted May 21, 2018 Share Posted May 21, 2018 Nice but too easy for RC - the real challenge would be to do the colour graduations as diagonals and see how it handles that. I did something like that for the latest ABBUC Magazin intro. 1,789,820,000 Iterations brought this: pps-pal-abbuc logo.zip 3 Quote Link to comment Share on other sites More sharing options...
+CharlieChaplin Posted May 21, 2018 Share Posted May 21, 2018 I did something like that for the latest ABBUC Magazin intro. 1,789,820,000 Iterations brought this: pps-pal-abbuc logo.png pps-pal-abbuc logo.zip Hehe, I simply converted this Abbuc logo into TIP format, took less than 1 second and maybe one iteration only... Quote Link to comment Share on other sites More sharing options...
Gunstar Posted May 21, 2018 Share Posted May 21, 2018 (edited) Nice but too easy for RC - the real challenge would be to do the colour graduations as diagonals and see how it handles that. I wasn't doing it for a challenge, I did it because it was easy. I think I've done my fair share of "challenging" for RC. Edited May 21, 2018 by Gunstar 1 Quote Link to comment Share on other sites More sharing options...
pps Posted May 21, 2018 Share Posted May 21, 2018 Hehe, I simply converted this Abbuc logo into TIP format, took less than 1 second and maybe one iteration only... yeah that's right, but I'm sure you got much less colors that way. Quote Link to comment Share on other sites More sharing options...
+CharlieChaplin Posted May 21, 2018 Share Posted May 21, 2018 yeah that's right, but I'm sure you got much less colors that way. Errmm, I got a lower resolution not fewer colours, since TIP is a 256 colour format (Gr. 9+10+11; max. resolution is 160x119 pixels, think I used only 160x100 pixels, size is 12kbytes)... Quote Link to comment Share on other sites More sharing options...
pps Posted May 21, 2018 Share Posted May 21, 2018 Hmm, correct reading is best to prevent mistakes... You wrote TIP not TIF... My mistake Andreas. Quote Link to comment Share on other sites More sharing options...
+Philsan Posted May 21, 2018 Author Share Posted May 21, 2018 Columbo, 8 colors. Philsan_Columbo_2.xex 10 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted May 27, 2018 Share Posted May 27, 2018 (edited) Image of Saturn taken by Voyager 2. 63 colors. This is not the original orientation of the image, I turned it 90 degrees counter clockwise to fit the screen ratio. Voyager2Saturn.xex Edited May 27, 2018 by Gunstar 6 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted May 27, 2018 Share Posted May 27, 2018 (edited) Here is the original version of Amber Afternoon before I zoomed in and cropped the image for better detail. It's the source image .png attached, I can't find the output .png AmberAfternoonKinkade.xex Edited May 27, 2018 by Gunstar 8 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted May 27, 2018 Share Posted May 27, 2018 British Flagship. 55 colours. BritishFlagship.xex 11 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted May 28, 2018 Share Posted May 28, 2018 Planet Express. 70 colors. PlanetExpress.xex 7 Quote Link to comment Share on other sites More sharing options...
Gunstar Posted May 29, 2018 Share Posted May 29, 2018 Inter-Galactic. 37 colors. InterGalactic.xex 7 Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted May 29, 2018 Share Posted May 29, 2018 British Flagship. 55 colours. awesome. 1 Quote Link to comment Share on other sites More sharing options...
+mytek Posted May 29, 2018 Share Posted May 29, 2018 It's amazing what Rasta Converter does to stretch the possibilities of the Atari's video hardware to create all these colors . Equally amazing (in my opinion) is what was done to get 1024 colors from a IBM CGA 16 color video board. CGA in 1024 Colors - a New Mode: the Illustrated Guide The article goes into a lot of detail as to how this was done. Might be something useful to be gleaned from it. 6 Quote Link to comment Share on other sites More sharing options...
Rybags Posted May 29, 2018 Share Posted May 29, 2018 That's artifacting - the CGA mode being more capable in that area since it's got more colour control to begin with (ie, seperate colours in 320 pixel mode, not a better default palette). 3 Quote Link to comment Share on other sites More sharing options...
+mytek Posted May 30, 2018 Share Posted May 30, 2018 That's artifacting - the CGA mode being more capable in that area since it's got more colour control to begin with (ie, seperate colours in 320 pixel mode, not a better default palette). Thanks for the feedback . I don't want to divert this thread any more than I already have, so let's call it a thing of interest, but not something directly translatable to the A8 in any beneficial way. Quote Link to comment Share on other sites More sharing options...
Gunstar Posted May 30, 2018 Share Posted May 30, 2018 (edited) CGA 1K color. 94 colors. Directly translated to 8-bit in a beneficial way, via Rastaconverter. Diversion averted. CGA1Kcolor.xex Edited May 30, 2018 by Gunstar 16 Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted May 31, 2018 Share Posted May 31, 2018 or isnt that from our 8088 MPH demo? looks familiar. 1 Quote Link to comment Share on other sites More sharing options...
Fox-1 / mnx Posted May 31, 2018 Share Posted May 31, 2018 (edited) Tried Rasta with a few simple comic pics but it really isn't suited for those. Too much solid colors I guess. After about 5000000 evals banding creeps in to never go away, no matter the settings or how long it's left to run. Anyways, a first, more or less, serious attempt, just for fun. Fox-1_IntelOutside1997.xex - rc Fox-1_intelOutside1997.png /h=191 /pal=g2f /dither=chess /dither_val=1.75 /dither_rand=0.6 /contrast=18 /init=smart /threads=11 Cropped source: Edited May 31, 2018 by Fox-1 / mnx 5 Quote Link to comment Share on other sites More sharing options...
Fox-1 / mnx Posted June 1, 2018 Share Posted June 1, 2018 The source of this one was a highly compressed 640x480 jpeg picture someone took at the parking lot of UnConventional 2001 Party in Lengenfeld, Germany. Because of the extensive artifacts I didn't expect much of it but it came out not as bad as I thought it would (but not that good either). .png Input - .png Output - rc Fox-1_MazdaVanUnCon2K1.png /h=180 /pal=real /dither=knoll /dither_rand=0.6 /brightness=4 /contrast=6 /init=smart /threads=11 About 4000000000 Evals Fox-1_MazdaVanUnCon2K1.xex 6 Quote Link to comment Share on other sites More sharing options...
Fox-1 / mnx Posted June 1, 2018 Share Posted June 1, 2018 I wonder why every comic-like pic I try ends up with strange horizontal lines in the .EXE that aren't visible in the .PNG Altirra screenshot - Output PNG - At a certain point in time lines appear out of thin air (mid-left: blue line thru "ZOO" letters and mid-right: white line on stairs) that won't go away. Only common factor with earlier attempts is the typical black lining in the drawing. rc Fox-1_DirkjanIssue5.png /h=240 /pal=laoo /dither=knoll /dither_val=1.2 /dither_rand=0.8 /brightness=8 /contrast=-5 /init=smart /threads=11 Fox-1_DirkjanIssue5.xex b.t.w: It's a part from the cover of a Dutch comic featuring the anti-hero "Dirkjan", a character by Mark Retera. Totally unknown outside the Netherlands and Belgium I guess :-) 4 Quote Link to comment Share on other sites More sharing options...
Rybags Posted June 2, 2018 Share Posted June 2, 2018 First guess I thought it was Far Side. Where that line is seems to coincide where the letters aren't very thick. I reckon if you thickened the letters and reduced other detail on those lines a bit it would fix it. Though the dither is a big part of that other detail and is added by the program. Quote Link to comment Share on other sites More sharing options...
Sheddy Posted June 2, 2018 Share Posted June 2, 2018 Actually, it looks like you've hit one of the edge cases where RastaConverter doesn't properly emulate("know") what a real Atari would output. Came up... quite a few pages back, but this year or late last, I think. Since RastaConverter isn't being actively updated anymore and the changes would probably be complex, it's unlikely to get fixed or worked around in RastaConverter unfortunately. Chances are if you try again from earlier save point or from scratch, it'll miss the edge case Quote Link to comment Share on other sites More sharing options...
Fox-1 / mnx Posted June 2, 2018 Share Posted June 2, 2018 Actually, it looks like you've hit one of the edge cases where RastaConverter doesn't properly emulate("know") what a real Atari would output. Chances are if you try again from earlier save point or from scratch, it'll miss the edge case It may be an edge case. I really have no idea. Restarting the conversion, with or without switching dither pattern, won't solve it. Sooner or later the lines creep in again but not necessarily at the same scan line(s). Any position with a lot of changing colors per scan line is a potential candidate. Quote Link to comment Share on other sites More sharing options...
Fox-1 / mnx Posted June 2, 2018 Share Posted June 2, 2018 First guess I thought it was Far Side. Where that line is seems to coincide where the letters aren't very thick. I reckon if you thickened the letters and reduced other detail on those lines a bit it would fix it. Though the dither is a big part of that other detail and is added by the program. Far side left is part of the issue too but I only mentioned the two most visible positions. The "ZOO" letters... yes, they aren't very thick but the introduced disturbing line appeared just above that problematic area. I guess I'll have to live with it. It's not like I can improve the code myself to let it do a better job... by far... Quote Link to comment Share on other sites More sharing options...
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