What is a 3d Room Scanner 
                     What is a 3d Room Scanner?
A 3D room scanner is basically a 
robot with two arms which are 
used to create a 3-dimensional 
digital model of an indoor 
environment. The device scans 
the surrounding area by rotating 
around its axis while moving 
through it - thereby creating 
hundreds or thousands of 
individual points which are turned 
into triangles in order to form the 
digital map. Some devices also 
work on people using multiple 
cameras, others use lasers to 
scan objects and walls up close.
The most widely 
known brand is 
"Sense", but there 
are other companies 
that produce these 
scanners, like Swiss 
company Cybe! And 
US based 
Matterport .
3d Room scanners 
can be used for many 
purposes, such as 
virtual tourism , 
architecture and 
interior design , 
media production, 
construction , 
education and many 
more.
3D room scanners are very complex 
devices which are both computer 
hardware as well as software 
products. They consist of various 
kinds of optical sensors, processors, 
multiple lenses , high-end cameras 
with sometimes 30+ megapixels 
resolution and much more 
depending on the type of scanner. 
The most widely used practice is to 
build a robot arm around 2 or 3 
cameras that take pictures 
simultaneously while rotating 
around their axis (also known as 
"sweeping").
Each picture is referred to 
as a shot and several 
hundreds or thousands 
shots form one complete 
scan. For smaller objects 
it's also possible to use 1 
camera but then you need 
at least 30 pictures for 
every rotation in order to 
have a complete 3-
dimensional model.
Is it possible to Yes, but this requires the use 
scan bigger of several 3d Room Scanners 
objects? working simultaneously in 
order to cover bigger areas 
or even entire rooms. This 
can be implemented by using 
either one robot arm with 
several cameras on it or 
multiple robotic arms which 
are all equipped with their 
own flashing systems and 
sensors for positioning 
purposes. 
Another solution is to combine 
two scanners together, one fast 
scanner that sweeps through 
the room vertically (let's say 
from top to bottom) at very high 
speed while another slower 
scanner goes horizontally (left 
right). The first type of scanner 
will then do the scanning during 
nighttime when there are no 
people around, while the second 
type of scanner can do its job 
during the day.
What are the The technological limitations 
are quite high due to several 
technological factors, one main factor is 
limitations with 3d the speed of the scanner 
Room Scanners? itself. If it's not fast enough 
then people will most likely 
notice that something is 
moving in front of them while 
they walk through a room 
which can be very disturbing 
or even lead to accidents.
Another limiting factor is related to lighting 
situation , but there are already solutions for 
this issue like projecting an invisible light 
pattern on nearby surfaces, turning off lights 
when possible and so forth. A third factor has 
mostly to do with processing power . It often 
takes hours or even days after scanning before 
you can use your data for software purposes, 
depending on its size of course.
What is the An active 3D room scanner is a device 
that uses an integrated rotating laser 
difference between " system in order to map the 
environment while performing sweeps. 
active " and " This technology ensures that every 
passive 3d Room single square inch, millimeter or even 
micrometer of your surroundings are 
Scanner"? recorded. The downside however is 
that you need to have direct line of 
sight with every object while scanning 
which can be difficult for bigger 
objects like big houses, huge shopping 
malls or even small islands.
A passive 3D room scanner on the 
other hand doesn't use lasers but 
instead relies on various types of 
camera devices - some looking 
forward while others look up/down or 
sideways. These technologies are 
mostly built around several cameras 
surrounding an object which are then 
producing a photorealistic model from 
various angles. The data regarding the 
depth of objects can also be used by 
our brains to construct a 3D image in a 
more natural way - as if we were 
walking or crawling through this room 
ourselves without having any 
restrictions.