A simple presentation on Microsoft's latest holographic VR device-HOLOLENS

1. Presented By:
Chaitanya Tewari
B.Tech(CSE-1)
Integral University
Roll No:-1200112063

2. 1. Introduction
2.How holography works
3.Holography vs. Photography
4.Windows Holographic
5.Hololens
6.Design
7.Technology
8.Interface
9.Applications
10.Conclusion

3. Holography is the science and practice of making holograms. Typically, a
hologram is a photographic recording of a light field, rather than of an image
formed by a lens, and it is used to display a fully three-dimensional image of
the holographed subject, which is seen without the aid of special glasses or
other intermediate optics. The hologram itself is not an image and it is
usually unintelligible when viewed under diffuse ambient light. In a side-by-
side comparison under optimal conditions, a holographic image is visually
indistinguishable from the actual subject, if the hologram and the subject are
lit just as they were at the time of recording.
Dennis Gabor proposed the idea of holography in late 1940’s with the means
of electron microscopes to produce a holographic image. He was then later
awarded in 1971 with a Nobel Peace Prize for his work in development of
optical holograms that generated 3-D objects by means of lasers.

4. Laser
Hologram is recorded using a flash of light
that illuminates a scene and then imprints
on a recording medium. In addition,
however, part of the light beam must be
shone directly onto the recording medium,
known as the reference beam. A hologram
requires a laser as the sole light source.
Lasers can be precisely controlled and have
a fixed wavelength. To prevent external
light from interfering, holograms are
usually taken in darkness, or in low level
light of a different color from the laser light
used in making the hologram. Holography
requires a specific exposure time (just like
photography), which can be controlled
using a shutter, or by electronically timing
the laser.

5. Apparatus
A flexible arrangement for recording a hologram requires the laser beam to be aimed
through a series of elements that change it in different ways. The first element is
a beam splitter that divides the beam into two identical beams, each aimed in
different directions:
One beam (known as the illumination or object beam) is spread using lenses and
directed onto the scene using mirrors. Some of the light scattered (reflected) from the
scene then falls onto the recording medium.
The second beam (known as the reference beam) is also spread through the use of
lenses, but is directed so that it doesn't come in contact with the scene, and instead
travels directly onto the recording medium.
One of the most common material for recording a hologram is a film very similar to
photographic film (silver halide photographic emulsion), but with a much higher
concentration of light-reactive grains, making it capable of the much
higher resolution that holograms require.

6. Process
When the two laser beams reach the recording medium, their
light waves intersect and interfere with each other. It is this
interference pattern that is imprinted on the recording
medium. The interference pattern can be considered an
encoded version of the scene, requiring a particular key — the
original light source — in order to view its contents.
This missing key is provided later by shining a laser, identical
to the one used to record the hologram, onto the developed
film. When this beam illuminates the hologram, it
is diffracted by the hologram's surface pattern. This produces a
light field identical to the one originally produced by the scene
and scattered onto the hologram.

7. Holography
 A laser is required to record a
hologram.
 In holography, the light from the
object is scattered directly onto the
recording medium.
 Holograms can only be viewed with
very specific forms of illumination.
 When a photograph is cut in half,
each piece shows half of the scene.
This is because, whereas each point
in a photograph only represents
light scattered from a single point in
the scene.
Photography
 A photograph can be recorded using
normal light sources (sunlight or electric
lighting)
 A lens is required in photography to
record the image.
 A photograph can be viewed in a wide
range of lighting conditions.
 When a hologram is cut in half, the
whole scene can still be seen in each
piece. Each point on a holographic
recording includes information about
light scattered from every point in the
scene.

8. Windows Holographic is a mixed reality computing
platform by Microsoft, enabling applications in which the live
presentation of physical real-world elements is incorporated with that
of virtual elements such that they are perceived to exist together in a
shared environment. A variant of Windows for augmented
reality computers(which augment a real-world physical environment
with virtual elements) Windows Holographic features an augmented-
reality operating environment in which any Universal Windows App
can run. In addition, with Holographic APIs, which are part of the
Universal Windows Platform, and supported as standard in Windows
10 (including versions for mobile devices and Xbox One), mixed reality
features can be readily implemented in any Universal Windows App,
for a wide range of Windows 10-based devices.

9. The premier device for Windows Holographic, Microsoft HoloLens is
a smart-glasses headset that is a cordless, self-contained Windows 10
computer. It uses advanced sensors, a high-definition stereoscopic
3D optical head-mounted display, and spatial sound to allow for
augmented reality applications, with a natural user interface that the
user interacts with through gaze, voice, and hand gestures.

10. Go beyond the screen
Shape holograms to
fine-tune a design.
Interact with them to
learn something new.
Microsoft HoloLens
enables you to make
decisions more
confidently, work
more effectively, and
bring ideas to life
before your eyes.

11. Your world as a canvas.
Microsoft HoloLens intelligently maps your room, mixing
holograms with the environment around you. Pin holograms
in physical locations as easily as you would place a physical
object in a room. Interact with holograms and everyday
objects together

12. A more natural way to interact
There isn’t a screen to
touch or a mouse to click.
Create and shape
holograms with gestures.
Communicate with apps
using your voice.
Navigate with a glance.
Microsoft HoloLens
understands your
gestures, gaze, and voice,
enabling you to interact
in the most natural way
possible.

13. Connect, create, and explore like never before.
Transform the ways you communicate, create, collaborate, and explore.
Your ideas are one step closer to becoming real when you can use
holograms to show your designs, collaborate remotely, and learn new
things in relation to the real world.

14. Create your own holograms
and share them with others.
Use holograms to visualize
how something will look in
the physical world whether
it’s a new piece of furniture in
your home, a toy for your
kids, or a new creation for
work.
HoloStudio will even let you
turn your holograms into
physical objects with 3D print
compatibility.
New ways to create what you imagine.

15. New ways to visualize your work.
Go beyond what a 2D render can do by working in three
dimensions. Pin holograms to physical objects so you can size
and scale them in real time. Make smarter decisions when you
see your work from every angle, in relation to the world
around you.

16. New ways to collaborate and explore.
Go somewhere you’ve
never been and examine it
from every angle. See
holograms from your
colleague’s perspective if
he’s in the next room or on
the other side of the world.
Explore a new dimension
grounded in, but not
limited to, the physical
world.

17. •Custom holographic processing
unit.
The HPU is custom silicon that processes a
large amount of data per second from the
sensors. Microsoft HoloLens understands
gestures and where you look, and maps the
world around you, all in real time.
•Sensor fusion.
Microsoft HoloLens has advanced sensors to
capture information about what you're
doing and the environment you’re in.

18. •Power and grace.
Containing more computing power than the
average laptop, Microsoft HoloLens is
passively cooled without fans. With no
wires, external cameras, or phone or PC
connection required, you can move freely
and untethered.
•Advanced optics.
See-through holographic high-definition
lenses use an advanced optical projection
system, generating multi-dimensional
full-colored images with very low latency
so you can see holograms in your world.

19. Built-in speakers.
A precise audio experience without headphones that is immersive, yet won’t block
out the real world.
Spatial sound.
Using a scientific model that characterizes how the human ear receives sound
from a specific location, Microsoft HoloLens synthesizes sound so that you can
hear holograms from anywhere in the room.

20. The augmented reality operating environment for Windows Holographic
carries over and adapts many elements from the Windows desktop
environment. Gaze tracking techniques such as head-tracking allows the user
to bring application focus to whatever the user is looking at. Elements can be
selected via an "air tap" gesture akin to clicking an imaginary mouse, using
the index finger with the hand in a "pointing up" position. The "tap" can be
held for performing a "drag" function. The gesture for a "home" command is
performed by opening one's hand with the palm facing up. Users can perform
various actions via voice command, such as pulling up a Holographic Start
menu to launch programs. Windows can be dragged to a particular position, as
well as resized. Virtual elements such as windows or menus can be "pinned" to
locations, physical structures or objects within the environment; or can be
"carried," or fixed in relation to the user, following the user as they move
around. In the Holographic environment, title bars for application
windows have a close button on the right, the title on the left, and buttons
for window management functions such as resizing and pinning/carrying in
the middle.

21. • HoloStudio
A 3D modelling application which can
produce output for 3D printers
• An implementation of
the Skype telecommunications application
•An interactive digital human
anatomy curriculum by Case Western
Reserve University and Cleveland Clinic
• Architectural engineering software tools
by Trimble Navigation
•A version of the video game Minecraft

22. • OnSight
OnSight integrates data from the Curiosity rover into a 3D simulation of
the Martian environment, which scientists around the world can visualize,
interact with, and collaborate in together using HoloLens devices. OnSight
can be used in mission planning, with users able to program rover activities
by looking at a target within the simulation, and using gestures to pull up
and select menu commands.
•Sidekick
It is a virtual aid tool for astronauts with two modes of operation. Remote
Expert Mode-uses the functionality of the Holographic Skype application—voice
and video chat; real-time virtual annotation— to allow a ground operator and
space crew member to collaborate directly over what the astronaut sees, with the
ground operator able to see the crew member's view in 3D, provide interactive
guidance, and draw annotations into the crew member's environment.

23. •Gaze Control
•Gesture Control
•Voice Control
•Spatial Sound
•Spatial Mapping