12. 4D ultrasound is a
medical ultrasound
technique, used in
medical filed , providing
3D images of the fetus .
Program recognize the
frequencies echoes by
use the mathematic
theory of 4D to create
the 3D image , it can be
live by keep sending
courteously.
4D Ultrasound
13. •Radiotherapy : aimed
to use cancer’s
treatment to treat or
help to discover.
The process : 4D imaging
treatment planning
treatment delivery
4D radiotherapy
14. WANT BIG IMPACT?
USE BIG IMAGE.
4Dcinema or movie is not
really 4D
it’s combination of 3-D film with
physical effects synchronized with
film in the theatre , i.e. 4D Avatar.
15. Why should we care ?
4D visualization has a wide variety
of useful applications. Mostly , they
aims to see the inner 3D objects which
is inside the 4D.
16. 4D Visualization Aims
Combine all manner of 3D models, images, video, and data in a coherent
dynamic visualization to support spatial-temporal data understanding,
information extraction, and dynamic scene change detection
Text
Hyper-links
Communications
…
Li-DAR
Laser
Stereo
…
Satellite
Aerial
Ground
…
3D model Video/image Data
Information Fusion & Visualization
Data Fusion
Tracking
Model refinement
Needs:
17. Various Technologies used for Aerial Projection or 4D Visualization
◉LIDAR
LIDAR, which stands for Light Detection and Ranging, is a remote sensing method that uses light in the
form of a pulsed laser to measure ranges (variable distances) to the Earth. These light pulses—combined
with other data recorded by the airborne system— generate precise, three-dimensional information
about the shape of the Earth and its surface characteristics.
Sensor Sensor
Image plane
View
frustum
18. Various Technologies used for Aerial Projection or 4D Visualization
◉6DOF
Six degrees of freedom (6DOF) refers to the specific number of axes that a rigid body is able
to freely move in three-dimensional space. It defines the number of independent
parameters that define the configuration of a mechanical system. Specifically, the body can
move in three dimensions, on the X, Y and Z axes, as well as change orientation between
those axes though rotation usually called pitch, yaw and roll.
20. Special thanks to
W. de Leeuw and R. van Liere. Case Study:
Comparing Two Methods for Filtering External
Motion in 4D Confocal Microscopy Data. Joint
Eurographics .
&
M. Levoy. Display of surfaces from volume
data. Computer Graphics & Application.
CREDITS & REFERENCES