Kind: captions
Language: en
hi everyone in this session we are going
to look at this image
of india's current prime minister
narendra modi
and what we're going to do is we're
going to geolocate and chronolocate this
image
what i mean by that is we're going to
look at some of the clues
in the background to identify the exact
location of this image
and then we're going to go a step ahead
and we're going to identify the time
by having a look at these shadows that
are cast and mix those
up with the location from the geo
location that we've done
and also some of the context around the
event from
news clippings and media that we'll find
doing a little image of our search
so strap yourself in with geolocation
and chronolocation
in this session called finding moddy
to start this session off the first
question we really want to answer is
where
where is morty standing right now in
this image
well we have a few clues so we can start
to look at the mountains in the
background
and we can look at the helipad but i
always like to start with a simple image
of our search just to see where else
this image might be available online
and if it's been uploaded with any
context like media articles
news articles tweets or facebook posts
or anything like that that might give us
a little bit more information
before we start having a look on
satellite imagery and scouring around
the world to see if we can find those
mountains
so let's take a little look the first
place i always like to go to is just
google images
and google image verse search and you
can do that image of earth search
just by clicking on this nice little
icon here that's on the google search
browser
called search by image what that does is
it lets
us upload an image and we can pop that
in there right now
i'm going to upload that from my desktop
and it'll load the image into the search
browser
and woohoo we have some search results
and we can see that there is a lot of
media
on this visit with modi so i'm going to
have a look
at the mumbai mirror india times
and let's see what they've written about
this visit
so photos prime minister modi's surprise
visit to ladakh
amid india china tensions great it looks
like we've got the same photo
that we were initially looking for as
well
so what i can see here is that we
already have the name of a location
he was also briefed by senior officials
at a forward position in nimu
i'm going to check that out so i've
typed in nimu
up in my search browser up here for
google earth
and it's taken me to a place that's
spelt a little bit different
n-i-m-m-o-o but that's quite typical of
google earth
sometimes it will auto-correct if you
have got the wrong spelling or a
different type
of spelling or a different dialect or a
different type of way of spelling a
place name as well
so let's start to use those mountains to
our advantage
now for geolocation i always like to use
the biggest and most obvious
object in the background for this one
we've got mountains
and i really like the look of this
mountain it's got some
like unique cuts in the side of it
so let's have a look at something like
that and we've also got these peaks here
right
so we have a little probably a valley
that goes through there
we've got two large mountains and a
mountain in the background
if i'm looking for these trees and this
valley that goes through there
maybe there might be a river that's
going through there as well
so i can see a river already in the
location that we found
and i'm going to tilt my camera just a
little bit
i don't see those mountains though right
here
so let's have a look at the other
direction of the valley
see if we can maybe spot something
hmm well the river seems to go that way
but already i'm seeing that
nice little mountain that i liked with
the slats
on the side of it that's kind of cool so
let's have a look and see if the rest of
it fits in
okay that looks like a fairly good image
to me
those mountains match quite well and
if we zoom down a little bit more we can
even get
a better alignment on that
yeah i'm pretty happy with that that
seems like a good fit and we've also got
this line of trees over here as well
because if we zoom out quite a fair way
the only place really in this area with
trees
is in front of those mountains which
matches this one quite well
so now what i'm going to start to do is
since i have an object or a reference
point
a geolocated reference point i'm going
to work my way backwards
to find exactly where moddy was standing
so we've got the trees which means we're
probably
in front of those trees somewhere but
how do we work our way backwards a
little bit more okay
well if we line our vision up with what
we can see
there then we can start to scroll
backwards and maybe try and fit these
buildings in there so we've got
two buildings if we zoom in on these
buildings here we can see that they make
a
a different shape to what a normal arch
building would because i can see
and yeah it's fairly pixelated but i can
see this piece is missing out of this
building which is quite unique
i always like to look for these little
unique shapes or jigsaw puzzles i like
to call them the sieve where they fit in
this picture
we've also got these little stands along
like this unique fence line as well
which is quite strange and this shape of
a possible helipad
and a road that would come out there so
as i'm scrolling back
along the ground here and since i can
align my view like that
i can fly back like a bird from those
mountains and see
perhaps if i can find that really odd
building structure
so i'm going backwards and backwards
i'm looking around for those building i
mean there's a lot of yellow buildings
and there's
it seems to be apparent that there's
some that have that
little cut out place as we can see over
there
so i'm going to keep scrolling back and
already while i'm scrolling back i can
see something pretty obvious
it's a helipad okay that would probably
make sense that a helicopter would land
there
so if i'm having a look at this image
those yellow buildings are closer to the
mountains
in line with the helipad and the
mountains and it looks like i've got one
here
which is a pretty fair match
for that building we have so that's a
nice little jigsaw match right there
and it's also got that dotted fence line
around the side
too and then that shape that we noticed
of the
of the road and then the helipad
gap yeah this looks like a fairly good
match
and if we line this up a little bit more
we can see that our image fits in there
quite nicely doesn't it with these slats
on the mountain we've got the tree line
and then we have these buildings on the
left
over here with that sort of dotted fence
line that we can see there
and then we've got this helipad and
we've even got the the painted corner it
seems on the helipad or possibly
unless that's a pile of dirt not too
sure
yeah so it seems like we have a fair
indication
of the helipad that prime minister modi
was standing on
uh which is a great start so now we have
a
location it's probably
fairly obvious that perhaps the
helicopter was parked over here
somewhere
and i highly doubt prime minister moddy
would walk over the sand when there's a
clearly good pathway here so i would say
that these guys are actually walking
towards the pathway
which is about here so he would have
been standing
in about this area here
assuming that the helicopter was parked
in the in the middle
area so we could add a pin here
and we could call this one heli for the
helicopter that was there
and i think prime minister modi would
have walked this way
towards the path there before he gets
either a little vehicle
or walks over to wherever he's going
so what can we do now well we can start
to have a look at the shadow since we
have an exact location
or a fairly accurate idea as to where he
was standing
just by using those clues in the
background
and and correlating those clues in the
background to what we can see on the
satellite imagery here
we can tell that modi was walking
in this direction towards the path here
from the helicopter
so now we can have a look at his shadows
and we can start to identify the time
of when this was now something i like to
do is also correlate
the time with media to identify a window
of time or a possible date or even a day
because that will allow us to be a
little bit more precise about our shadow
calculation
as well so when we did the image of
earth
search for prime minister modi's visit
there is something that i do notice
which is that all of the articles seem
to have been written
on july 3 2020
and all of them are referring to the
visit today
july 3rd july 3rd july 3rd july 3rd many
of them were referring to
prime minister modi visiting that place
in nimu
or that military base on july 3rd
now in the hindustan times here we also
have one that says
uh he landed on friday morning if we
have a look on our sunkac here we can
see that july 3rd was actually a friday
but let's double check that with the
shadows well first of all
we know that modi was standing here
in the image that we've got the shadows
seem to be pointing
either almost directly down but a little
bit on an angle
as well so if we have a look at the
helicopter
and then where moddy was moddy was
standing
about here and i'll create a little
pin for that we can see his shadow
wasn't completely straight
or parallel with the actual helicopter
tarmac but rather on a bit of an angle
so if i was to draw a line so
i've created a little shadow line just
to indicate the possible shadow
but that's kind of too straight so
we can see that his shadow was actually
on a bit more of an angle
this way let's bring that up in some
calc and recreate the same view
so first of all to do that we need to
get the coordinates
so i'm going to go back to the helipad
and we had him walking towards the path
so about
here so these coordinates
i'm going to grab from here and i'm
going to pop them into the url
in the top of suncalc.org up here
we've already set our date on july 3rd
which is handy
and we want to replicate this exact same
shadow line or or something similar to
it to see the window of time
that modi might have been walking there
uh in this image that we have
in suncalc we can do that quite easily
by dragging this icon which represents
the sun
up in the top bar here and you can see
that when i do that the direction
of the sun or the position of the sun
changes
and thus the shadow corresponding with
that would change as well
we can't see the shadow here so for the
purposes of illustrating this for
everyone here
i'm going to set the height of the
object
as 20 meters now i know modi is
definitely not
20 meters tall but that way we can see
the shadow a little bit more clearly
so you can see that the shadow
corresponds with the position of the sun
when i move it now we know that the
angle was a little bit off it wasn't
straight down
the helipad but it was a little bit off
now if you see if i'm straight on the
helipad we are
at a time of about 10 32 or a little bit
past half past 10.
so if i move
the position of the sun a little bit
more so it creates that
almost cross angle from
the corner of this side of the helipad
then we have a time that's closer
to 10 am
now if we have a look at say 8 am
the shadow is really pushing over
towards the other side which means
that this shadow would be a lot more
further pointing in that direction
it's not and if we move our
shadow over to 11am we can see that
the shadow is pointing actually towards
the
upper or the northern corner of the
helipad up here
whereas that's not from there and it's
definitely not in the middle
as well at 10 10 30.
so that means that the this image was
taken
before 10 30 and
after 8 30.
we can really narrow that down to a
window of an hour
between almost 9 and 10 10
am so that's a really
easy way to identify
when an image might have been taken
again this is not a very technical way
if you want to see a more technical way
you can have a look at
the shadow calculation tutorial that i
did for boris johnson
but this is just a quick verification
method for prime minister moddy
to use this image as an example
so this is the other useful thing about
geolocation and chronolocation
is that now that we have a location we
could for example
match this image up to our location as
well
so we've got these large yellow
buildings in the background
uh and there are six of them so we could
have a look
near our helipad where would those six
buildings be well
i mean there's a fairly good clue right
here right next to helipad there's six
of these buildings right
and they seem to be over on the far left
but then we also have a long yellow
building
and a series of green buildings that go
towards the water
that we have over here so if we can see
that long yellow building
that is before and kind of in front of
these yellow
six buildings we have the six yellow
ones and then we have a long yellow one
here
and we have the green ones going towards
the water there
so we could draw back again and we're
moving back and we can also match those
shadows
those mountains up too right so with
these mountains we can see this large
one right here
it's on the other side of the river we
can see these big
fingers coming out of this mountain as
well as that ridge line
there we can also flick on our google
earth
to get a bit of a better uh date range
and see what was going on at that time
to see if there's any indication
um as to what we could identify in there
i think it actually might be this field
uh that we can see right here
um we seem to be another fence line away
from these buildings which might be this
fence line here
uh and we can also see the sides of
these buildings
along here so it helps us identify
other locations like that and then we
could go on to
identify the location of where modi was
sitting but also using these shadows as
well
now that we have those shadows there
that seem to be coming out of the back
of the soldiers so because we know it
was in
this field we could have a look at the
shadows there and again
doing the same process we could move our
suncalc over
to that field
and having a look at the shadows that we
can see in that article
they're sort of pointing straight down
the field
almost we can move that along
and see that actually those soldiers or
that image of the soldiers might have
been taken between
10 30 and
11 just because of the straight line
that we can see going down there
so with a little bit of geolocation and
chronolocation of
one image we can start to line up a lot
of other images that were taken
we can also identify other images of
where modi was
walking off the
the ramp here so that sort of goes back
to
our image over here with the ramp
that we can identify and we can see that
he would have been walking off that ramp
there and we can also match those
shadows up
as well in this image so we could use
suncalc
and move that back over to the ramp
those images look fairly fairly straight
except maybe a little bit more down
that might even be towards sort of
10 10 a.m
to 10 30 or 10 a.m to 10
20 as well so what have we done here
we've identified that there are
numerous ways to go about geolocation
and chronolocation however a very simple
way
is to start with an image of earth
search and then have a look at the clues
in the background of the image
and before you know it you can start to
identify the possible location
and then once you have that location we
can use things such as shadows
or we can use buildings or we can use
the weather or anything like that or
seasons to
start to identify a window of time but
another good resource for identifying
that window of time is
media articles uh so news
twitter social media posts and things
like that and then cross
checking that with the shadows that are
seen in the in
an image as well as multiple other
images
and you can see that just by doing this
process it opens up the field to
a number of more images from the
exact same scene or exact same scenario
this specific image was widely covered
by indian media when prime minister modi
made his visit to
border troops however i thought this was
a really good example
just to show you a little bit of easier
chronolocation and geolocation
than some of the previous ones i've
shown such as
boris johnson from the uk or other ones
that have been more technical
and deeper in analysis so if you want to
check out those ones please do go ahead
uh that uses the specific height of the
object so the specific height of boris
johnson
in this one i didn't look at the height
of prime minister moddy to
do a shadow calculation but rather just
did a much
quicker shadow calculation which is less
technical
which means less accurate but is is
easier to do
with this process so thank you so much
for watching and i hope you picked up a
thing or two
about this and if you think that this
might help someone please do share it
with them and don't forget to like and
subscribe
and i'll see you in the next video
[Music]
you