Originally Posted by
Centrosphere
a) if you´re BEA or someone hired by them, you would need the raw images, and probably you would even use software to enhance the images
Yep, but we are not they. We are looking at press release images intended to show the unwashed masses what has been found, not images for detailed anaiysis.
Remember, this is a photo of another photo (or maybe even just a screencap from video stream) on a monitor, with all the losses that entails, before we even get to compression
_ you would never use compression algorithms that delivers loss of information. That´s my problem with the "compression artifact" thesys. Alas, the rest of the image is very crisp and detailed.
If bandwidth and storage are infinite, then you'd never use lossy compression They aren't, and trade-offs are made.
b) if you have the files of all raw images you dream of, why the hell you would use a picture from a monitor in the much awaited press release?
Because you want (commendably) to show the world what you've found in a timely manner, not provide the world with the highest resolution for analysis.
The high-res images are probably still on the boat (why waste sat bandwidth sending hi-res back to land - the search professionals are on the boat)
The hi-res image may still have been only on the ROV when the photo was taken and sent back for
PR (it might even be screen cap from a video stream - not sure how we'd know from a photo of a screen)