Sonic and Sega Retro Message Board: New Sonic 1 Alpha Screens Discovered - Sonic and Sega Retro Message Board

Jump to content

Hey there, Guest!  (Log In · Register) Help
  • 23 Pages +
  • ◄ First
  • 18
  • 19
  • 20
  • 21
  • 22
  • Last ►
    Locked
    Locked Forum

New Sonic 1 Alpha Screens Discovered

#286 User is offline LocalH 

Posted 13 March 2018 - 05:43 PM

  • roxoring your soxors
  • Posts: 3232
  • Joined: 11-January 03
  • Gender:Male
  • Location:wouldn't you like to know
  • Project:Guitar Hero II: Rhythm Games Community Edition aka Pizza Hero II: Electric Pizza
  • Wiki edits:3

View PostBlack Squirrel, on 13 March 2018 - 05:18 PM, said:

View PostLocalH, on 13 March 2018 - 04:57 PM, said:

Here is a detail of the left wing, JPG artifacts out the wazoo.

I think the bigger concern here is the moire effect, but that's more of an indication that the scan isn't going to get much better, since it's picking up how the ink lies on the page.

It's asking a lot - a good scan of potentially dodgy printed off-camera screenshot. The fact it needs to be colour corrected is a clue it might not be doable.


But who knows.

Agreed. I was honestly surprised the scanlines became visible. You can just barely see a regular pattern when looking at the halftones, but nothing that suggests that the scanlines would even be recoverable.

Ideally, the chosen resolution would be the sensor's resolution. We don't really need any horizontal upsampling.
This post has been edited by LocalH: 13 March 2018 - 07:50 PM

#287 User is offline cornholio857 

Posted 13 March 2018 - 08:28 PM

  • The Great Cornholio
  • Posts: 415
  • Joined: 23-March 10
  • Gender:Male
  • Location:Jacksonville, FL
  • Project:In search of TP
I can try scanning it again. For the JPG compression, I used 95% quality through Paint.Net. Any suggestions with what dpi would be ideal? I can also apply a descreening filter while scanning if that helps(as mentioned). I'll try to have a new scan up this weekend after looking at suggestions.

Edit: Would PNG be more preferable?
This post has been edited by cornholio857: 13 March 2018 - 08:34 PM

#288 User is offline sonicblur 

Posted 13 March 2018 - 09:26 PM

  • Posts: 1174
  • Joined: 18-February 08
  • Gender:Male
  • Wiki edits:6

View Postcornholio857, on 13 March 2018 - 08:28 PM, said:

I can try scanning it again. For the JPG compression, I used 95% quality through Paint.Net. Any suggestions with what dpi would be ideal? I can also apply a descreening filter while scanning if that helps(as mentioned). I'll try to have a new scan up this weekend after looking at suggestions.

Edit: Would PNG be more preferable?

PNG is going to be massive in file size, but there won't be any compression artifacts. I'd recommend PNG.

#289 User is offline Travelsonic 

Posted 15 March 2018 - 10:40 AM

  • Posts: 715
  • Joined: 01-March 05

View Postsonicblur, on 13 March 2018 - 09:26 PM, said:

View Postcornholio857, on 13 March 2018 - 08:28 PM, said:

I can try scanning it again. For the JPG compression, I used 95% quality through Paint.Net. Any suggestions with what dpi would be ideal? I can also apply a descreening filter while scanning if that helps(as mentioned). I'll try to have a new scan up this weekend after looking at suggestions.

Edit: Would PNG be more preferable?

PNG is going to be massive in file size...


Even with compression?

#290 User is online Sparks 

Posted 15 March 2018 - 11:03 AM

  • Posts: 2985
  • Joined: 27-June 05
  • Gender:Male
  • Project:Kyle and Lucy: Wonderworld
  • Wiki edits:21
For the sake of preservation, I can't think of any good reason to -not- use PNG.

#291 User is offline cornholio857 

Posted 15 March 2018 - 11:43 AM

  • The Great Cornholio
  • Posts: 415
  • Joined: 23-March 10
  • Gender:Male
  • Location:Jacksonville, FL
  • Project:In search of TP

View PostSparks, on 15 March 2018 - 11:03 AM, said:

For the sake of preservation, I can't think of any good reason to -not- use PNG.


Agreed. File size is no issue to me, so the new scan that I will post will be in PNG format. I appreciate the input from you guys because I want to do this screenshot justice considering what it is. Thanks again for the input! :)/>

#292 User is offline Neo 

Posted 15 March 2018 - 06:20 PM

  • Clackerjack
  • Posts: 1357
  • Joined: 10-December 04
  • Gender:Male
  • Location:Portugal
  • Project:Sonic 3 Unlocked
  • Wiki edits:1

View PostSparks, on 15 March 2018 - 11:03 AM, said:

For the sake of preservation, I can't think of any good reason to -not- use PNG.

Because you're using that extra storage space to preserve noise. Photos and scans are what lossy formats like JPEG were designed for.

#293 User is offline Lapper 

Posted 15 March 2018 - 06:48 PM

  • Posts: 1460
  • Joined: 15-June 08
  • Gender:Male
  • Location:England
  • Project:Sonic 2 HD, Sonic Studio
  • Wiki edits:111
Did some measuring and came up with this as a pixel scaled version:
Posted Image
Could easily be off by one or 2 pixels one way or another, as the image scanned isn't correctly proportioned (it's stretched vertically)

#294 User is offline Hendricks 266 

Posted 15 March 2018 - 06:52 PM

  • Posts: 362
  • Joined: 01-June 05
  • Gender:Male
  • Location:United States
  • Wiki edits:58

View PostNeo, on 15 March 2018 - 06:20 PM, said:

View PostSparks, on 15 March 2018 - 11:03 AM, said:

For the sake of preservation, I can't think of any good reason to -not- use PNG.

Because you're using that extra storage space to preserve noise. Photos and scans are what lossy formats like JPEG were designed for.

Lossy formats like JPEG sacrifice noise data with respect to human perception. We can't be sure that they won't remove signal data that the additional processing being done in this thread could make use of.

#295 User is offline LocalH 

Posted 15 March 2018 - 09:44 PM

  • roxoring your soxors
  • Posts: 3232
  • Joined: 11-January 03
  • Gender:Male
  • Location:wouldn't you like to know
  • Project:Guitar Hero II: Rhythm Games Community Edition aka Pizza Hero II: Electric Pizza
  • Wiki edits:3

View PostLapper, on 15 March 2018 - 06:48 PM, said:

Did some measuring and came up with this as a pixel scaled version:
Posted Image
Could easily be off by one or 2 pixels one way or another, as the image scanned isn't correctly proportioned (it's stretched vertically)

More correctly, you're seeing a combination of the native pixel aspect ratio of an NTSC Megadrive, as modified by the geometry of the display device that was photographed. If you scale to the exact pixel height of the raw graphic, this scan should be narrower.

#296 User is offline Black Squirrel 

Posted 16 March 2018 - 11:47 AM

  • maybe she's born with it
  • Posts: 4224
  • Joined: 27-December 03
  • Gender:Male
  • Location:Northumberland, England
  • Project:maybe it's maybelline
  • Wiki edits:20,569
If you wanted the definitive super duper bestest scan ever possible, you'd scan it hundreds of times and then average out all of the resulting images.

You know, something completely unrealistic.



The Retro policy on the wikis is to prefer JPEG for scans, because with PNGs you're preserving the imperfections at the expense of huge file sizes. Also many of the tricks behind PNG optimisation start failing at that level (not to mention it would take an age to process). That being said, I always use 100% on the Paint.NET JPEG scale so compression artifacts are as hidden as possible.



Though do remember, we still hope to find the ROM of this some day - if and when that happens, the pixels will be preserved.


Fun fact: We actually have this exact sort of redundancy on Sonic Retro right now:
Posted Image Posted Image

These cropped up magazine screenshots were uploaded to the internet in the early 2000s. But we have the Sonic 2 8-bit rolling demo ROM now, so we don't actually need these blurry things anymore. They'd have about the same amount of use to us whether they were PNG or JPEG - resolution matters more.




But but but but but

We could really do with a full scan of the whole book, because that hasn't been done.
This post has been edited by Black Squirrel: 16 March 2018 - 11:49 AM

#297 User is offline cornholio857 

Posted 16 March 2018 - 07:31 PM

  • The Great Cornholio
  • Posts: 415
  • Joined: 23-March 10
  • Gender:Male
  • Location:Jacksonville, FL
  • Project:In search of TP
This is about the best I can do with what scanner I have.

JPEG:
Posted Image

PNG: https://imgur.com/K8VSzEi

#298 User is offline ICEknight 

Posted 16 March 2018 - 07:34 PM

  • Posts: 10853
  • Joined: 11-January 03
  • Gender:Male
  • Location:Spain
  • Wiki edits:18
Is that scanned at more than 300 dpi? I believe that's the very minimum resolution when doing magazines.

#299 User is offline cornholio857 

Posted 16 March 2018 - 07:39 PM

  • The Great Cornholio
  • Posts: 415
  • Joined: 23-March 10
  • Gender:Male
  • Location:Jacksonville, FL
  • Project:In search of TP

View PostICEknight, on 16 March 2018 - 07:34 PM, said:

Is that scanned at more than 300 dpi? I believe that's the very minimum resolution when doing magazines.

600 dpi is what I used.

Edit:
One more at 2400dpi:
Posted Image

Full Size: https://i.imgur.com/l5CINNh.jpg

Enjoy!
This post has been edited by cornholio857: 16 March 2018 - 08:01 PM

#300 User is offline Master Emerald 

Posted 16 March 2018 - 10:06 PM

  • Posts: 3384
  • Joined: 14-December 07
  • Gender:Male
  • Location:Rio de Janeiro - Brazil
  • Project:-
  • Wiki edits:22
Can you get us a PNG of the 2400dpi scan?

  • 23 Pages +
  • ◄ First
  • 18
  • 19
  • 20
  • 21
  • 22
  • Last ►
    Locked
    Locked Forum

1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users