4 ms·

> That produced raw images in which the stage appeared 1 pixel wide and 10 pixels long, but subsequent enhancing by specialists at the Johns Hopkins University

by clebio 12y ago

> That produced raw images in which the stage appeared 1 pixel wide and 10 pixels long, but subsequent enhancing by specialists at the Johns Hopkins University Applied Physics Laboratory improved the resolution dramatically. So, the final resolution was something like... 10x100 pixels? How do you enhance a 1 pixel image? I'm guessing the two aircraft, at two different altitudes, help ... you get 2 pixels instead of 1.

7952 12y ago
Maybe they just resample the image to a higher resolution using interpolation. It will not add addittional information but it may make the image easier to analyse and understand. Sometimes an interpolated image will have less error from the actual phenomena than the low resolution version (in the same way that a compressed mp3 is a better reproduction than an uncompressed version of a similar file size).
icegreentea 12y ago
Probably some fun super-resolution (basically, frame stacking with stats!) work. It would trade away some time resolution for spatial resolution, but that could be what they needed.
smoyer 12y ago
It's (probably) an unstable video, so you take the data from each frame for some large fraction of a second and you can create an image that's somewhere between the total number of available pixels in all the frames and the number in a single frame. Note: While the spacecraft itself is moving at incredible speeds, the maneuvers themselves are slow enough that several (to many with a high speed camera) images can be combined.
sp332 12y ago
They know what the stage looks like, they just pasted a high-res photo on it :p
phkahler 12y ago
I had copied that exact text to clipboard to ask the same question. I would guess it's dependent on having video rather than a still but I really don't know.
liquidise 12y ago
Obligatory "uncrop" clip https://www.youtube.com/watch?v=JMIHNiR3CP8 https://www.youtube.com/watch?v=JMIHNiR3CP8

by clebio 12y ago

7952 12y ago

Maybe they just resample the image to a higher resolution using interpolation. It will not add addittional information but it may make the image easier to analyse and understand. Sometimes an interpolated image will have less error from the actual phenomena than the low resolution version (in the same way that a compressed mp3 is a better reproduction than an uncompressed version of a similar file size).

icegreentea 12y ago

Probably some fun super-resolution (basically, frame stacking with stats!) work. It would trade away some time resolution for spatial resolution, but that could be what they needed.

smoyer 12y ago

It's (probably) an unstable video, so you take the data from each frame for some large fraction of a second and you can create an image that's somewhere between the total number of available pixels in all the frames and the number in a single frame. Note: While the spacecraft itself is moving at incredible speeds, the maneuvers themselves are slow enough that several (to many with a high speed camera) images can be combined.

sp332 12y ago

They know what the stage looks like, they just pasted a high-res photo on it :p

phkahler 12y ago

I had copied that exact text to clipboard to ask the same question. I would guess it's dependent on having video rather than a still but I really don't know.

liquidise 12y ago

Obligatory "uncrop" clip https://www.youtube.com/watch?v=JMIHNiR3CP8 https://www.youtube.com/watch?v=JMIHNiR3CP8