High-Speed 3D Camera
Instant 3D shape recording
3D Camera z-Snapper
 z-Snapper compact |
 z-Snapper vario |
The use of three-dimensional surface contour data instead of a two-dimensional intensity picture offers significant advantages for both machine vision solutions and life science applications. Frequently, the desired information can be detected much better from the object height than from its brightness. In the past, task specific illumination and evaluation techniques were necessary to solve such kind of testing problems; they may cause considerable development costs. The z-Snapper is closing this gap; it provides immediately full-field 3D surface data at a recording time that compares with a standard CCD camera. The high density of data points per measurement reveals even small object features with high reliability.
The z-Snapper sensing principle is based upon the well-known fringe projection methodology combined with sophisticated phase measuring algorithms. A sequence of patterns is projected and recorded by a precisely synchronized camera. Optimized algorithms are provided for the fast and reliable evaluation of the intensity patterns; the user benefits from the powerful application programming interface (API).
Based upon DMD™ projection, the short recording time of 40 ms is one of the outstanding z-Snapper properties enabling not only hand-held operation or fast in-line applications but also the recording of living objects. The recording of 3D videos is also supported as a special operating mode with up to 40 fps VGA. There are two basic z-Snapper configurations: compact and vario.
z-Snapper vario consists in two items, projector and camera, that can be mounted independently thus simplifying system integration. It provides high flexibility in both field of view and triangulation angle.
z-Snapper compact comes as a single plug & play unit enabling high mobility. An additional novelty is the LED based DMD projector. The replacement of commonly used UHP arc lamps by a solid state light source eliminates a number of restrictions. At first, the device is self-contained (no fibre-bundle input) and does not need a cooling fan so that the housing is completely closed and dust protected. Secondly, in contrast to the arc lamp based systems, the z-Snapper can be tilted and is operating in any desired position. And finally, the LED does not require high voltage so that the whole system may be battery powered.
Examples
| In-line shape control |
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| Robotics |  |
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| Living objects |  |
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Specifications
| z-Snapper | compact | vario |
| Measurement | ||
| Data field | full: 640x480 pixel or binning: 320x240 pixel | |
| Field of view | 350 mm | 180 – 1200 mm |
| Height resolution* | 20-50 µm | 10-200 µm |
| Recording time** | full: 40-200 ms or binning: 25-120 ms | |
| Interface | ||
| Projection | USB2.0 | |
| Camera | IEEE1394b (FireWire) | |
| Power | max 17W@12-30V | |
| General | ||
| Dimensions | 230x130x115 mm | 200x130x115*** mm |
| Packaging | compact aluminium housing | projector and camera separated |
| Weight | 2300 g | 1600 g |
| Requirements | PC or laptop, Windows® XP/Pro, 1Gbyte RAM |
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Rapid Body Part Scanning
with MobilCam3D
We present you advanced 3D body part scanners for the acquisition of shape data with unmatched speed. The 3D shape is captured as convenient as pictures are taken with digital cameras and even 3D video functions are implemented. The devices are easy to operate and the recording process is fully automated. Eye safety is guaranteed by a laser-free design.
Three models are available: the compact, lightweight, and hand-held MobilCam3D, the ScanStation3D enabling full-360° shape data by one single shot, and DynaScan4D for the recording of 3D video sequences from persons in motion.
MobilCam3D
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 Different views of the 3D model |
The MobilCam3D system is the first body part scanner on the market that is operated hand held and combines different views without the need of sticking any marks or grids on the person. The operator takes the lightweight camera, aims at the object and pushes the button – each 3D snapshot is instantly included into the 3D model and displayed on the connected laptop PC. Advanced technology guarantees that all snapshots fit together automatically and the resulting 3D model can be directly observed during recording.
Very powerful is the use of MobilCam3D systems in combination with foam imprints to achieve complete 3D scans including upper and lower part. This is demonstrated in the picture for feet but can be applied to other body parts as well.
For getting a complete shape, the foot is pressed into the foam and the upper part is recorded with a couple of 3D snapshots. Then, after the foot is removed, the imprint is also taken. In this simple way, the full 3D foot model is captured quickly and with high precision. It provides comprehensive input data for personalized shoe production. Large, dedicated scanner devices are not longer necessary for this task.
ScanStation3D
The ScanStation3D is designed for capturing the complete 360° geometry of body parts in one single shot, i.e. in Milliseconds. This is achieved by the synchronized operation of up to 4 sensors in the system. The multiple sensors freeze the possible motions of the person and provide the complete 3D model from one snapshot. Arms, hands, legs etc. can be freely held into the measuring space and do not need any suspension. Sequences of 3D shape records can be taken while moving the body part to different positions.
ScanStation3D is convenient for the patient, can be driven by non-skilled operators, and provides 100% reliable results. The system is in particular valuable for places where 3D shape recording of body parts is a standard step in patient treatment.
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 Different views of one scan |
DynaScan4D
A long term desire for 3D human motion studies and monitoring is fulfilled with the high recording speed of the 3D scanners. DynaScan4D is a modular system implementation supporting the 3D video mode of recording for up to 5 synchronized scanners. Sequences of 3D shape data frames are taken with an outstanding high 3D frame rate of up to 40 Hz. Applications are found in the field of dynamic feet shape analysis under walking conditions (left) and in the breathing control during nuclear cancer treatment (right).
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| Time series of 3D records | |
Technical characteristics and the main features of the 3D scanner
| Fast | scan time: 0.025 s |
| Precise | accuracy <0.3 mm |
| Lossless | 80,000 (x,y,z) coordinates per single sensor scan |
| Small | dimensions: 230 x 130 x 115 mm |
| Light | weight: 2,300 g |
| Safe | laser-free, low voltage (12V) |
| Mobile | laptop PC / battery option |
| Modular | combined: 1…5 synchronized sensors |
| Durable | all-semiconductor: DLP® based LED-projector, no mechanical parts |
| Reliable | automated operation, self-monitoring |
| Convenient | hand-held recording and instant 3D model display |
| Complete | 360° measurements |
| Versatile | static (3D) or dynamic (4D) scenes captured |
| Proven | 24/7 operation implemented |