yeah I'm below
and welcome back today and we're talking about environment scanning
before I begin I would like to mention the works love Christoph
schindler and Nicholas Rooney the level of detail in their environments
has been a constant source of motivation for me and I encourage you to check out
more on their amazing work
him
me
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mom environment CNN such
a complex subject that I decided to break this up
into two videos this video will focus on natural environments
and the next video will focus on man-made environments
and that way we can focus on everything without having to sit through one giant
25 minute long video and to be clear I'm focusing on
3d scanning for visual effects if you're scanning 43 print email or surveying
I love the information here still relevant but you might do some things
differently
and %uh p.m. Sun let's get started when looking at the environment you want to
scan
ask yourself to questions can this be scanned
and if so how much of it why want to scan
now technically just to anyplace camps canned
but we want clean scans getting the Queen's can from a pile of rocks
it's gonna be a lot easier than getting clean scandal a dense forest
resto covered mountain so decide if it even worth your time first
as for how much weight you need to scan that depends on what the camera sees
it doesn't show up in your final imager film
it doesn't need to be scanned less area you have to scan
the small the details can be your final model all environments fall under
one of two categories said I've made up occluded
and non occluded occluded environments for places like forests
grassy plains desert with lots of cacti
places we have all this stuff in the way of the terrain usually plant life
something makes getting clean scans a lot harder non included trains on the
other hand
or relatively easy to scan these are places like mountains
barren deserts rocky beaches
places we have a clean unobstructed view from the camera to the terrain
and if you want clean scans you have to take a different approach to shooting
your images
depending on what do you mean by men is cluded or not occluded
will focus on on occluded environments first and what better place to start
min at the foothills of the Great Florida mountains
of course water doesn't have any mountain so
will just go to the beach instead with not included environments you can't
really thing as one big object
and scan all together the whaling to work is pretty simple
a shoot in manual also makes poachers see the same then just gradually move
around the subject
shooting passes so yeah Rosa images from multiple angles
if I'm shouldn't something big I refused by wide lens which is a tender
twenty-millimeter Sigma
if it's burned enough I like to shoot a FA to maximize image sharpness
or in your camera to maximize the space a subject takes up in the frame
sometimes you need to watch out for your shadow and avoid having footprints and
you're scanning area
has you work if the environment your country is mostly horizontal surfaces
you'll want to shoot down were predominantly if it's mostly vertical
surfaces you'll mostly shoot from the side
again this is to maximize a sizable environments features in the frame
alright you just shot a White Castle the environment that might be all you need
to shoot depending on how do you tell you want mesh to being
texture maps can also hi Lana mistakes individual facts all that matters is how
good it looks not how it actually is
but if you need more detail should a second house photos
this time getting closer to the environment the more time you couldn't
shoot in your source images
the better your results can be as long as you don't shoot more images new
computer can actually handle
if that is a problem one thing that can cut down the number photos yet to shoot
is getting a sharper lines
the resolving power your lines is more important than the megapixel resolution
on your camera
something the best scans I've ever seen have come from a camera with just 26
megapixel sensor
John Mark truly a captured these using a Konica Minolta
Dynax 7d and often shoots less than 100 images per cm
nasa tires can you can take on a mom a sharper lines will benefit every type of
scan
but especially in environments can you were here sometimes even with
very large areas a sharper lines is a huge help
sharper class means more detail captured each image which means fewer images need
overall now if you're dealing with a really big area it's easier to use a UAV
sure your images
if you have access to one I don't but I do have a GoPro which John Mary bought
me for Christmas
if you are using a GoPro or a similar type camera
you may need to correct for the barrel distortion in two lengths if you
generate your skin from GoPro injures straight out of the camera
you'll get distorted meshes this stressful a street in real life
but came out curved in photos can under stored images is simple
if you use Adobe software this video will help you
there's also a program called PT lines which can be used
small cameras like these are also great if you work in an area that is
very difficult to navigate just take the camera on the UAE in shoeprint distance
a GoPro is great for cheap funds Canon but the detail in the images is not
great
it looks like somebody applied the water color filter in Photoshop
so if you desire high quality you'll want to research better cameras for UAV
scanning
okay so that I like to shoot not a clue environments
but couldn't buy a man's require a different approach tell me what you see
here
trees grass bush's
fines basically this is hell
my double in places like this you can scan everything in one go he just need
ross spatial data
like if you're serving but want clean scans they don't look like blom see at
the start breaking down the scene into individual components
deciding what can be scanned in what cannot big things like trees
rocks bear brown can give very good results
but things are made of a plot some small structures like
grass and bushes and shrubs will never come out clean unless you scan each
piece individually
these things are better left to traditional modeling
nor using resources such as the grass essentials kit
by Andrew price already bloody nature assets from Derek of
if you're in a hurry can get decent results can in a tree with a wide lens
in a single rogue pictures
if you want really good detail though should at least two or three rows and
images at different heights
you won't be able to get a clean skin and the leaves are the small branches
have the upper canopy
but you know is extend you see an traditional modeling
using the capture data as reference the new
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as you may have noticed I generate most my scans at medium quality
my Barbie PC simply isn't practical for generating
at high quality from more than 30 or 40 images
but yours very well maybe if it is you'll see a nice jump in quality from
medium to high
for instance here's a partial trees can generated on high from just 22 images
if you do a lot of environments gaining
your quickly find this out the most comfortable activity
standing hunched over looking through the viewfinder will quickly take its
toll on your back
so here simply recommend make the task easier
first Jeddah mundo pod
it's cheap simple and will make you shot sharper
next get a cable shutter release for your camera
this will also make your shot sharper probably
and will allow your home more comfortable posture when shooting low
and high angles
who also enable you to place a Cameron positions you would normally be able to
reach otherwise
my last basic suggestion is to add a
head to the model Honda this way you'll be able to set the
camera in either portrait or landscape orientation depending on what suits the
subject best
if you wanna get the camera really high higher than your model part will allow
all you really need is a poll BBC would
mental any kind of fool do to attach a camera are you something called the
super clamp
strong simple and it's a really versatile piece a kid
so not spending money on something like no use for one thing now if you want to
get your camera
ridiculously high
looking the collapsible polls such as a painters Paul
just be careful when pulling heavy DSL or on top all the talk all
and use common sense when shooting outside the and Leslie
here some quick tips the size of your domain
or bounding box a picture processing time the small the box las fotos can has
the process
and the higher you can set the quality level when generating the dense point
cloud
if using a super wide lens check for a vignette in your images
meet in easy thing to fix in Dobie Camera Raw dept filtering
miss could have a sectional its own but basically if I'm shooting in a non a
polluted environment
I usually set too low or moderate the fun shooting including byron
it's usually moderate or high basically the better your source images are the
lower you can set it without getting nasty results
you make small things look big war room
rear were more all new CD mountain but don't live near a mountain
look for something rocks the scan into big funky looking tree but can't find
one
scan a Banzai small rocks can look like boulders
you do is tweak materials a scan later on to fit your vision
remember photos can adjust the tool with a means to an end
some p.m. itself learn to use a software
a new and weird way use find a box
scan it and then think outside
the
so there you have it my tips for Environment skinny part 1
if you have any questions feel free to leave them in the comments now answer
him personally
and stay tuned for Part two environments can which is coming soon
and as always thanks for watching
if you're interested in game development check out the behind the scenes for the
Unreal k demo
especially starting at the 14-minute mark they have some pretty cool photo
scan stuff in there