[Coral-List] drone used to photograph reefs

David Blakeway fathom5marineresearch at gmail.com
Wed Jul 3 21:49:05 UTC 2019

Yes it is expensive, but NASA's ultimate aim is to map other planets. In
that context it's better value.
It may not solve any immediate reef problem but it has a lot of potential
to reveal unknown patterns/problems.
So personally, if I were a US citizen, I think I'd be happy for my tax
dollars to support projects like this.
I do appreciate your points about alternative spending, and Alessio's about
cost-effective options.
David Blakeway
Fathom 5 Marine Research

On Wed, Jul 3, 2019 at 10:48 PM Alessio Rovere via Coral-List <
coral-list at coral.aoml.noaa.gov> wrote:

> Thanks for the share, very interesting!
> My 2 cents hereafter.
> With a much cheaper equipment and the right weather conditions, one can
> already do a pretty good job in shallow water:
> https://link.springer.com/article/10.1007/s00338-016-1522-0
> And with some further analysis the drone data can be used to train the
> analysis of larger datasets and map broader areas:
> https://www.tandfonline.com/doi/abs/10.1080/01431161.2018.1500072
> This said, the research of that group might bring us up to the next step.
> The fact that it is expensive now does not mean that it will be accessible
> in, say, 10 years....
> Sent from my iPad
> On Jul 2, 2019, at 4:45 PM, Jean Jaubert via Coral-List <
> coral-list at coral.aoml.noaa.gov<mailto:coral-list at coral.aoml.noaa.gov>>
> wrote:
> Hi Tom,
> My team used a high resolution multipsectral imager (CASI) to map the
> damadge caused by the 1997-1998 El Nino to reefs in French Polynesia: Mumby
> P., Chisholm J. R. M., Clark C. D., Heydley J. D., Jaubert J. 2001. A
> bird's-eye view of the health of coral reefs. Nature: 36.
> Cheers,
> Jean
> ------------ Beginning of the forwarded e-mails ------------
> Hi everyone,
> For some reason this exchange triggered a flashback for me, way back to
> 1992 to an article Mike Risk wrote for REEF ENCOUNTER (Reef Encounter;
> Number 12, December 1992; pp. 7-9) entitled: "Musings on Monitoring". The
> views expressed then are still relevant today.
> Tom
> Quoting "Risk, Michael via Coral-List" <coral-list at coral.aoml.noaa.gov
> <mailto:coral-list at coral.aoml.noaa.gov>>:
>   ...and 50 years ago Terry Scoffin was flying camera-carrying kites over
>   reefs, 40 years ago we had CASSI multispectral imagery...there are
>   loads of techniques out there. We need to give up our fascination with
>   endless ways to describe the vanishing (how many different "reef
>   survey" schemes are out there?) and concentrate on stopping the
>   vanishing. This might just mean less focus on individual careers and
>   more on solutions. (If I sound cynical-I earned it.)
>   On Jun 28, 2019, at 5:20 PM, Douglas Fenner via Coral-List
>   <[1]coral-list at coral.aoml.noaa.gov<mailto:coral-list at coral.aoml.noaa.gov>>
> wrote:
>   So fantastic whiz-bang technology!  Great!!  We'd all like to be able
>   to finally see what the reef looks like, each bump, hole, and coral
>   colony, on our computer screens in the office or lab.  Never mind that
> it is only
>   a tiny patch of the world's reefs.  Article didn't say how much 6 mo of
>   supercomputer time to crunch the data will cost.  Surely vastly more
>   than the $90,000 for the camera and $15,000 for the drone.  How practical
>   will that be for mapping the world's reefs?  What major coral reef
> problem
>   will be solved by this?  Will it solve some major mystery about reefs?
> Will
>   it save any reefs or corals?  I didn't see an answer to that in the
>   article. A person was quoted in this article as saying it is faster than
> having
>   someone go underwater and take a lot of pictures and stitch them
>   together. But clearly not faster if you include computer time.  Instead
> of 6 mo
>   of supercomputer, you can do the computer processing on your own computer
>   in a few hours with software that is dirt cheap compared to a
> supercomputer
>   for 6 mo.  For the price of supercomputer for 6 mo, you could provide
>   funding for reef management for a whole country for a year or more, I
> would
>   guess. Or voluntary birth control for a whole small country for a year
> or so
>   (I'm totally with you on that, Alina!).
>      I'm playing "devil's advocate" here.
>       Cheers,  Doug

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