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 Forum index » Archive » Archive: Perplex City » PXC: General/Updates
[UPDATE] The Scarlett Kite - 12 Oct 06 - Scrambled
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locqust
Unfettered


Joined: 14 Oct 2005
Posts: 545
Location: Gloucestershire UK

I was hoping that once this image had been decoded it would be a little clearer as to what it is....Im just as confused as before! Razz

It could be a type of spectrograph, but not convinced of that.
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PostPosted: Sat Oct 14, 2006 9:27 am
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poozle
Entrenched

Joined: 15 Aug 2005
Posts: 1090

I have no idea about the lines but I'd say the Xs are in some way relevent to positions its picked something up and we have to somehow work out where the centre point of all of them is and then, well, go there (be it a place on earth and us, or a place on perplex city and scarlett/violet go).

I don't think that description was any good tbh... if anyone doesn't understand I'll try explaining better (or if anyone does understand could they try describing it better Razz).

PostPosted: Sat Oct 14, 2006 11:37 am
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ixalon
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Joined: 12 May 2005
Posts: 238
Location: Edinburgh, Scotland

Looking at the bottom it looks like the Y-axis is labelled "A" and whatever the X-axis is it appears to be something to do with geotargetting which is inversely proportional to "A".

Attached is my attempt at lining most of it up (I haven't moved the bottom right over to the left where it belongs though.)
partunscrambled.gif
 Description   
 Filesize   5.25KB
 Viewed   1132 Time(s)

partunscrambled.gif

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PostPosted: Sat Oct 14, 2006 11:51 am
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ThusQED
Boot

Joined: 20 May 2006
Posts: 22

Note that in the text, it talks about geopositioning in addition to vertical. Also, geopositioning is measured in terms of a range. That's why I imagine it looks a bit like a statistical diagram of sort.

Although it could be a literal position on a map but that would be rather useless for us since we already know where Maine ended up.

PostPosted: Sat Oct 14, 2006 12:02 pm
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ne0x
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Joined: 30 Jun 2006
Posts: 89
Location: Ottawa, Canada

Do you suppose the 'A' has to do with altitude? There were remarks on how the vertical accuracy was improving.
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PostPosted: Sat Oct 14, 2006 1:52 pm
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Mima
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Joined: 17 Feb 2005
Posts: 260

Another guess would be that "A" is just accuracy, we know that they were trying to target actual locations (rather than walls etc), and this could show a reducing margin of error. Therefore mainly improving, but with the odd outlier.

PostPosted: Sat Oct 14, 2006 2:06 pm
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makomk
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Joined: 11 Jul 2006
Posts: 56

The image itself seems to be "scrambled" by removing 25-pixel long chunks of image data in various places, then reflowing the rest of the image data appropriately. I'm currently working on fixing it on that basis - hopefully it'll give better results.

ETA: Seems to work well so far. Looks like I'm about halfway down now.
ETA2: The second half of the image is messier. I'm about two-thirds through and I've had to skip 26 twice and delete a few pixels three times. Possibly corruption from extracting the GIF, possibly not. Anyway, the rest of the picture is even worse. I'm not sure I want to continue further, but my program and source image are attached (it's unscramble4.py, and you'll need Python and PIL to run it). Just add the number of pixels to add or skip and the co-ordinates at which you want to do it (in terms of the output image so far) to 'jumps' - the format should be obvious.
unscrambled4.png
 Description   
 Filesize   9.85KB
 Viewed   793 Time(s)

unscrambled4.png

unscram.zip
Description  My Python programs
zip

 Download 
Filename  unscram.zip 
Filesize  8.18KB 
Downloaded  167 Time(s) 
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PostPosted: Sun Oct 15, 2006 11:21 am
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Uhtoff
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Joined: 09 Dec 2005
Posts: 75

Very impressive, I have absolutely no idea what you are doing!

Just a couple of thoughts - mako, I notice that there are horizontal bluish lines on your unscrambling of the gif that aren't on the others, is this an artefact of your process or a 'failing' in others? We have no scale at all, just the A at the origin apparently on the y-axis, this suggests to me that we have to use the graph as an overlay for another image (maybe one we don't have yet, maybe a puzzle card...) as there's no other exact data we could really get out of it. Also, I'm not entirely sure that the A is a label for the y-axis as this isn't how (or where) you would generally label it, maybe it's an alignment mark for whatever it overlies.

[TIAG]This seems like an awfully technical (and difficult) thing to be worked out if it's not important, which is why I think it's unlikely to be a record of accuracy of experiments as that isn't really information that we can use or would even want. Of course it might just be something to keep us occupied Wink[/TIAG]

PostPosted: Sun Oct 15, 2006 4:10 pm
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ixalon
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Joined: 12 May 2005
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Location: Edinburgh, Scotland

Uhtoff wrote:
[TIAG]This seems like an awfully technical (and difficult) thing to be worked out if it's not important, which is why I think it's unlikely to be a record of accuracy of experiments as that isn't really information that we can use or would even want. Of course it might just be something to keep us occupied Wink[/TIAG]


But the lighthouse map was also rather tricky and even if we had solved it correctly, without knowledge of the islands we'd never have known what we were looking at. This is probably just something to keep us busy over the weekend Smile
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PostPosted: Sun Oct 15, 2006 4:22 pm
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Uhtoff
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Joined: 09 Dec 2005
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Good point, good point...although I still reckon that lighthouse map thing was a clue as to how to deal with something else that we are still missing.

PostPosted: Sun Oct 15, 2006 4:33 pm
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makomk
Boot

Joined: 11 Jul 2006
Posts: 56

Uhtoff wrote:
Just a couple of thoughts - mako, I notice that there are horizontal bluish lines on your unscrambling of the gif that aren't on the others, is this an artefact of your process or a 'failing' in others?


They're actually transparent, and they represent pixels I've inserted to make everything line up correctly. (Basically, I insert a short row of 25 or so transparent pixels, push the rest of the row's pixels along, then re-insert any pixels that fall off at the start of the next row and shove that along, etc. It makes more sense if you know that, in most image formats, each row of pixels follows immediately on from the previous one in a 1-dimensional array - so I just have to insert the pixels and everything else then shifts correctly.)

The main reason I've done it this way is that it gives very good results with little modification to the image, as you can see. (This is probably a good sign that it's right.) I'm not sure if there's any pattern to the locations I had to insert pixels at (other than them all being in roughly one of two places horizontally) - I'll probably leave that for someone else to figure out.

Technically, it's not "unscrambling" at all - I haven't rearranged anything, just inserted some extra pixels (and deleted a few, though I think that may be due to corruption in the source GIF or something)
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PostPosted: Sun Oct 15, 2006 7:20 pm
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Mikeyj
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Joined: 18 Oct 2004
Posts: 1847
Location: London

Has anyone updated the Scooby gang with what we've got so far on this? In light of recent events it might be good for them to be in possession of all relevant facts.
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PostPosted: Mon Oct 16, 2006 1:17 pm
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rose
...and then Magic happens


Joined: 26 Nov 2003
Posts: 4117

I think they may have unscrambled it themselves or someone sent it to them.

I am wondering what the final result will be and if the current futures have a hint: somethin about the easiest solve not being the cleanest.
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PostPosted: Mon Oct 16, 2006 6:43 pm
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makomk
Boot

Joined: 11 Jul 2006
Posts: 56

Just looking through the GIF to try and figure out where it's corrupted. Ixalon: you seem to have ended up with 1e at offset 141 (hex) when it should be a 2e; not sure how that happened.

ETA: better or worse?
ETA2: If I edit the image info to reduce the height slightly (effectively chopping the missing/corrupt bit off), programs will actually read it rather than rejecting it as corrupt...
ETA3: managed to mostly "unscramble" it. I think it might be slightly corrupt in a few places, and there's no way I'll be able to figure out the bottom of the image.
hack77.gif
 Description   
 Filesize   4.52KB
 Viewed   346 Time(s)

hack77.gif

unscrambled77.png
 Description   Mostly unscrambled.
 Filesize   8.92KB
 Viewed   527 Time(s)

unscrambled77.png

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PostPosted: Wed Oct 18, 2006 11:28 am
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Mima
Decorated


Joined: 17 Feb 2005
Posts: 260

VHC tempfile

I have done my best to sort out the lab reports into some sort of order, I have had to use loads of assumptions, so you will also find these in the file. I would love comments from everyone to see if there is anything that should be changed.

It has lead to some interesting conclusions:
* They started off trying to increase the accuracy, but then moved onto trying to increase the distance over which they were able to transfer.
* The lab may have been part of another underground facility, so it would not have been visible when the Visitor Centre opened.
* The Gamma Shields seem to have been introduced in order to combat the problem with EM waves.
* It is possible (although this is highly speculative) that the Gamma Shields failed when Major Maine was transferred which may be why he was having so many problems with the EM waves.

The wiki is now updated with all of the information that we have collected except this - I would love some opinions before it goes up there!!
tempfile lab results.xls
Description 
xls

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Filename  tempfile lab results.xls 
Filesize  50KB 
Downloaded  220 Time(s) 

PostPosted: Sun Oct 22, 2006 8:57 am
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