4 ms·

I was ridiculously excited when I first read about this in October (if I remember correctly) last year, when a few of the first results were beginning to pop ou

I was ridiculously excited when I first read about this in October (if I remember correctly) last year, when a few of the first results were beginning to pop out. I found the methodology fascinating. First of all the digital unwrapping of the scrolls, then the recognition that crackling in the paper was the sign of ink, and finally putting together a model to detect it, piece by piece. I need to look into the final repository to understand what exactly they did, but they seem to have used a TimeSFormer. I'm confused by this choice as I thought it was for video. How did they apply this to images? In the end though, what a wonderful day for archeology. These young minds deserve a huge round of applause for what they have achieved.

deleted 3y ago
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marcyb5st 3y ago
my understanding is that the scan they did on the scrolls returned the layers themselves. Like so: ``` xxxxxxxxxx <- The surface of the scroll xxxxxxxxxx ... xxxxxxxxxx <- The bottom of the scroll ``` So, by tiling the image on the surface you get data that is size_x * size_y * n_layers. So, it can be seen as a video stream with size_x * size_y * 1 channel * n_layers where the layers replace the temporal dimension.
- namaria 3y ago
  They explain it on the methodology sections. The scans result in a stack of tiff images that can be rendered as videos of the scan or as 3d models.
- dan_mctree 3y ago
  The scans used for the grand prize look like this : https://scrollprize.org/img/grandprize/scroll1.mp4 https://scrollprize.org/img/grandprize/scroll1.mp4 It's a cut through the scroll, with the time dimension in this video representing the location of the cut along the scroll lengthwise. As you can see from the mess it's far from trivial to find the surface of any of the sheets in the scroll, often they layers are blended together messes. You may be thinking of the scans they used of an unwrapped sheet, those were as you describe and were used to help figure out methods for the real challenge.
  - eitally 3y ago
    That's amazing! I wonder if the solution technique has any bearing on potential improvements in diagnostic CT / MRI scans?
  - tetris11 3y ago
    I wonder what that perfect circle gap is at 0:06, south-west from center?
peter_retief 3y ago
ditto about being excited!

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marcyb5st 3y ago

my understanding is that the scan they did on the scrolls returned the layers themselves. Like so: ``` xxxxxxxxxx <- The surface of the scroll xxxxxxxxxx ... xxxxxxxxxx <- The bottom of the scroll ``` So, by tiling the image on the surface you get data that is size_x * size_y * n_layers. So, it can be seen as a video stream with size_x * size_y * 1 channel * n_layers where the layers replace the temporal dimension.

namaria 3y ago
They explain it on the methodology sections. The scans result in a stack of tiff images that can be rendered as videos of the scan or as 3d models.
dan_mctree 3y ago
The scans used for the grand prize look like this : https://scrollprize.org/img/grandprize/scroll1.mp4 https://scrollprize.org/img/grandprize/scroll1.mp4 It's a cut through the scroll, with the time dimension in this video representing the location of the cut along the scroll lengthwise. As you can see from the mess it's far from trivial to find the surface of any of the sheets in the scroll, often they layers are blended together messes. You may be thinking of the scans they used of an unwrapped sheet, those were as you describe and were used to help figure out methods for the real challenge.
- eitally 3y ago
  That's amazing! I wonder if the solution technique has any bearing on potential improvements in diagnostic CT / MRI scans?
- tetris11 3y ago
  I wonder what that perfect circle gap is at 0:06, south-west from center?

peter_retief 3y ago

ditto about being excited!