3D Optical Digitizers
Patterned light is projected onto subjects; deformation is recorded by an off-set camera. Triangulation calculates a 3D mesh. Fast, accurate and adaptable for human portraiture.
3D Laser Scanners
A laser line moves over subjects' surfaces; an off-set camera records deformation. Triangulation calculates a 3D mesh. Slower, but higher accuracy enabled for static objects.
3D Mechanical Digitizers
Mechanical arms physically probe objects, guided by the user; points are recorded on the surface of subjects. Intuitive but slow. Unsuitable for delicate objects.
3D Scanning software
View, edit and export scan data efficiently and accurately. Triangulation, registration and merging algorithms, polygon editing, CAD conversion, model export for web viewing.
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Real time optical range sensing camera. Produces frame by frame z buffer images.
ThingLab theblurb....
3DV Systems - ZCam
- Discontinued
Designed to meet the demanding requirements
of the professional production and post-production markets, ZCam is a Range
Sensing video camera add-on, intended for operation in conjunction with a broadcast
ENG camera. The ZCam provides a B/W range video stream corresponding to the
color video output provided by the ENG camera.
This frame by frame pixel by pixel matching range stream can be thought of as
a 4th pseudo color channel hence RGBA (A for Alpha) for a binary Alpha channel
and RGBD (D for Depth) for a full dynamic range grey level depth map (hence
Z buffer or Range map) as an advanced feature. ZCam supports both NTSC and PAL
format cameras.
3DV Systems ZCam
How does it work?
The ZCam captures the depth value of each pixel
in the scene in addition to the color value, thus creating a depth map of the
object by grey level scaling the distances. And so by using the PRS (Parallel
Range Sensing - invented and patented by 3DV) technology, every video frame
is supplemented with an additional frame known as the Z-Buffer. The depth image
supplemented by the ZCam has an image (Z-Buffer) corresponding to every frame
in the video, and supplements the color information found in the video with
the depth information extracted by the ZCam, all done in real-time.
The optical system of the sensor itself performs
the high-speed parallel calculations for each pixel range. And so information
such as the object boundaries; object surface elevations and object distances
is provided by a ZCam output.
One of the most useful
outputs the ZCam can generate is the depth keying. Depth keying is used for
generating masks or keys for objects that lay in designated distances from the
camera while ignoring objects that lay in diverse distances.
The operator of the camera can very easily set measurement volumes which start
at a certain minimal distance from the camera and end at a specified distance
from the camera. Each object/talent that lays inside the designated volume generates
a key or mask, while other objects that lay outside the designated volume are
not shown in the mask (are ignored). This simple process allows the operator
to generate a key in any environment he chooses without limitation on environment
such as unique coloring (as done by the chroma key technique), vast illumination
etc.
Objects that lie outside the designated range are
not included in the key
The color video generated
by the broadcast camera along with the key video generated by the ZCam can be
fed into industry-standard switchers. The switchers can use the output of the
key signal of the ZCam as the source for compositing graphics into the live
video stream choosing to place it behind or in front of the talent.
The key-channel map that
is generated is the key information for the switchers, so that it can determine
which source of video to put in front of the other. This key-channel map can
get generated in the natural context of the scene, without the need of a special
studio setup.
Capturing the colour image (A) and depth map (B)
in order to generate a 3D Model (C)
What can it do for me?
The ZCam may be used for various applications. The ZCam captures the geometry
of the scene, and segments it into different objects, thus the use of the depth
key, which is generated by the ZCam, can enhance production values in various
ways during a live production:
Backgrounds can be separated and replaced fully or partially,
without the use of a blue screen and foregrounds may be added
Selected color correction can now be done in real-time
Computer graphics can easily be inserted
anywhere in the scene, including behind and between talents or keying in
front of, between or behind an audience
Automatic masks are created in real-time,
in TV studios or on location
The ZCam is suited to most of the software
and graphic tools available on the market.
The ZCam does not require a long assimilation
period nor does it request extensive training and qualifications, nor animator
training courses, thus enabling you to upgrade your system easily.
The 3DV solution fits seamlessly into the existing
video capture, production and distribution environments. The image sensor does
not require a special camera, and can be used with all major studio cameras.
Product Specifications:
Range:
0.5 to 7m (1.5 - 23 feet).
Range Resolution:
1cm, 0.4 inch (depending on the window range).
FOV (Field Of View):
40° degrees
Output Format:
PAL or NTSC (4:3 Aspect ratio), Digital or Analog Standard Definition.
Output signal
SMPTE 259 M - D1
High Compatibility to most standard ENG Broadcast Cameras,
2/3" Optical Format, for example: Ikegami, Sony, JVC etc.
Weight of ZCam on tripod:
16 kg. (35.27 Pounds).
Power:
100-220 Volt
Power Consumption:
7.5 amps. for 100 volts, 4.5 amps for 220 Volts.
Triax or Multipin interface to the ZCam CCU.
Size (including lens and illumination unit):
81x23x33 cm / 31.89x9.05x12.99 inches.
Compatible to most 2/3" ENG lenses, for example Fujinon,
Canon, Anjenia etc.
Frame Rate:
25-30 frames per second, with capability of 60 fps and higher.
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