Seminar On ISphere

1. A Seminar on
ISPHERE TECHNOLOGY
Presented By
Mr. Kedar Sanjay Damkondwar
Under the guidance of
Mr. Kambe A. B.
Gramin Polytechnic Vishnupuri,Nanded.
Department of Computer Engineering.

2. CONTENTS
What is ISPHERE
Hardware Implementation
Software Implementation
Interactive Technique
Realistic Interaction
Conclusion
Reference
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3. The aim of this research was to develop a high-
level modeling system which can reduce human
cognitive load in 3D creation . It creates a new
dimension to interact with 3D models intuitively . It
projects designers idea into 3D model instantly as
Isphere will manipulate 3D objects in a spatial way .
Simply, an input device that should make us to focus
what is in our mind and built 3D models.
ISPHERE
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Fig. 1, Isphere models an object through spatial method.

5. Hardware Implementation
Hardware gives a vivid picture of Isphere as it essentially captures all
human hand action . Constructing a right shape for Isphere was a
challenge . Nevertheless, We built a foldable dodecahedron with acrylic
material which makes a Pentago- nal structure . Every face is capable of
sensing hands for eight degrees above the surface . Capacitive sensors
measures physical actions which are connected on the Isphere.Shunt
mode operation is used to detect motions . Brie y, Shunt mode
capacitive sensing will work between a transmit and receive electrode .
For Isphere, the hand movement of the performer changes the electric
field between a transmit and receive electrode . Hence the current is
measured at the second electrode correlates to the change in electrical
field . Normally, the distance to the second electrode is known as Shunt
mode(in our case less than six inches).Capacitive sensors detects the
proximity of hands at twelve different directions which corresponds to
faces.

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Fig. 2 shows that received signal from capacitive sensors are level adjusted by signal
conditioning circuit (Amplifier , Switch and a Low-pass filter).Finally, digital input will be received
by PIC microcontroller. A Microcontroller interfaces the incoming digital input to software
module.

7. Software Implementation
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As shown in Fig. 3 Isphere hardware is connected to
microcontroller through a Serial interface (RS232).Meta-
sphere maps the input signals into a meta-sphere to a
target 3D object . We use Alias Wave front Maya 6.0
C++ API (Application Programming Interface) as isphere
plug-in.3D manipulation is realized by MEL(Maya
Embedded Language).MEL modifies the functions by
drawing relationships from data . The system
architecture is exible for future upgrade . New functions
can easily be added into the system. Currently, isphere
manipulates 3D mesh-based model in Alias-Wave front
Maya, 3DS Max or Rhino.

8. Fig. 3 shows that software implementation

9. INTERACTIVE TECHNIQUE
3D users should be expected to consume more cognitive load
on designing rather than modeling. We propose isphere
acting as a hand sensor knowing about levels of actions, like
hand positions, touching, pushing and twisting actions. In
most 3D modeling systems, keyboards and mice are good for
command-executing and mode switching. However, it still
can’t allow us to perform an editing command by a single and
intuitive action. We claim that making the interaction more
realistic can enhance the experience of 3D modeling.

10. Realistic Interaction
ISphere has been used with an editing mode for
modeling 3D geometries and an inspecting mode for
navigating 3D scenes. The natural mapping for an
enclosed object is to map the dodecahedron to
pulling on and pushing in on the surfaces as though it
were clay.. Natural hand actions are mapped to the
modeling commands, such as pushing multiple facets
to squeeze the 3D model on that direction, as shown
in Figure 4.

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Visual feedback is provided in 3D software responding the 3D
warp effect like playing with virtual clay when a user’s hand is
attempting to stretch the 3D object. In the inspecting mode, it
acts as a proximity sensor which can detect the hand
positions around the device. It is connected to the 3D
software that rotates the figures like last images .
corresponding camera viewpoint when a hand approaches
the surface, as shown in Figure 4 The 3D model can
automatically get oriented when a user touches anyone of the
surfaces. To switch the editing and inspecting mode, a
functional button was installed on the desktop which allows
users to switch between them by touching it or leaving it.

13. Conclusion-
 3D TECHNOLOGY
 Advance method of 3D
 Working of Isphere
 Implementation
 Techniques
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14. References:-
 www.Isphere.com
 www.wikipedia.com
 www. 3d techniques.com
Websites:-
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15. Thanks…..
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