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TEMA Automotive

Brochure

Product Information

Description

 

The ultimate motion analysis tool for highest possible accuracy in automotive crash testing.

TEMA Automotive is the world leading system for advanced motion analysis in the automotive industry.

TEMA Covers the complete process from bringing the image into the program via automated tracking and analysis to a result presentation in predefined tables and graphs.

Measurements of deformations, airbag volume, dummy head accelerations and steering column penetration are just a few of many application in the automotive industry.

FLEXIBLE - The flexible windows based user interface makes it fast and easy to find the best setup for your application. Key-bindings to the menu system make the operation very fast.

POWERFUL - Handles and analyses at rapid speed large quantities of data from high speed cameras and other sensors. The operator can choose between a large number of tracking algorithms and track an unlimited number of points throughout the image sequence.

SYNCHRONIZED - The User Interface is "Fully synchronized": any change of parameters or set-up will directly effect all parts of the tracking session, updating results, graphs and tables.

COMPATIBLE - The system handles all major image formats on the market and has options to control most of the available high speed cameras on the market such as Phantom, Photron, Redlake and others.

User interface

The windows based user interface of TEMA provides a very flexible way of setting up a test. The operator can easily load one or multiple camera views and define the points he wants to track in the image sequence. The Menu bar, Tool bar or Key bindings will all give quick access to the wanted feature or function.

The User Interface is "Fully synchronized": any change of parameters or set-up will directly effect all parts of the tracking session, updating results, graphs and tables.

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Tracking and analyzing

The operator has full control of the tracking in TEMA with many possibilities to adjust for different applications. The tracking can be made Manual, Semi Automatic or Automatic.

TEMA has a very powerful set of different tracking algorithms available such as Correlation, Quad, MXT. Circular, Center of gravity etc.

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Wand Calibration

wand_1

TEMA Wand Calibration is the brand new calibration tool for 3D analysis of crash tests, sled tests and pedestrian tests in the automotive industry. The use of wand calibration will increase accuracy and ensure that the results acquired from the analysis are accurate enough to draw the correct conclusions.

By combining multiple high-speed cameras and TEMA Wand Calibration it is possibleto do a complete 3D motion analysis of any high-speed test in the automotive industry.

The wand calibration replaces the traditional 3D test preparations, i.e. lens calibration and camera orientation.

TEMA Wand Calibration advantages:

No setup time – No preparations – No need to place reference markers or doing surveys of the measurement volume in order to do the calibration. Just pick up the TEMA Wand and start recording.

Quick and easy to use – In a couple of minutes the user has the results from the calibration and can move towards performing the real test. The software 100% automatically performs all procedures to obtain the calibration data.

Automatic calibration controls – By using active marker based on LED technology, combined with a very robust tracking algorithm, the software calibration process is fast, robust and provides a high level of accuracy.

TEMA 3D workflow with Wand calibration option:

step_1

 

 

 

 

 

 

1. Setup cameras. Position the cameras for the test and set the final zoom, focus and aperture. Choose camera positions so that the points of interest on the test object will be visible from two or more cameras during the test. The accuracy of the analysis depends on the geometry between the points and the observing cameras: 90 ° angles are optimal, 30 ° – 150 ° angles are acceptable.

step_2

2. Record calibration images. Make a synchronized recording from all cameras. Move the wand in the entire measurement volume during approximately 1000 frames. Use low frame rate 25 – 50 Hz and set exposure time to less than 2 ms to maximize contrast and avoid motion blur. Use regular room lighting.

step_3

3. Record test images. Set the final frame rate and exposure time for the test. Don't adjust the other camera settings or move the cameras. Perform the test and make a synchronized recording from all cameras.

step_4

4. Analyze test. Use TEMA and the calibration images to calibrate the system. All necessary parameters are calibrated and the process is 100 % automatic. Then use TEMA and the test images to analyze the points of interest in the test images. 3D results are computed for each point that is tracked in two or more cameras. Note: The calibration can be reused in future tests as long as the camera setup is identical.

Wand Calibration Features

Quick and Easy. Capturing calibration images is easy and processing them is 100 % automatic.

Flexible. Supports measurement volumes from 1x1x1 m – 10x10x3 m (w x d x h). Also supports any number of cameras (two is minimum).

Camera independent. Cameras of any model, frame rate and resolution can be used together. "All" image formats are supported.

Powerful. The Wand calibration computes all camera parameters simultaneously, as well as statistics and tolerances of the entire system.

Accurate. Tolerances from 1 – 5 mm can be reached in crash test environments. The actual tolerance depends on the camera setup and is computed as part of the Wand calibration. Please contact Image Systems for more information.

Quality materials and design. The carbon fiber construction and the active markers based on LED technology gives a robust, high quality wand that can be used for many years.

Options

There are a set of options available for the TEMA 2D product. Below is a summary of these options. Please refer to the TEMA Product Information for more details on options availability or contact us for more detailed information.

3D Tracking

With two or more fixed cameras and a series of defined fixed targets in any one image, the tracking can be carried out in 3 dimensions. TEMA takes the observations (tracked pixel coordinates) from each camera, computes the direction from each camera to the target, and finds the target position that is the best fit to the observations.

3dtracking

6 Degrees of Freedom

Tracking in 6 degrees of freedom (6DOF), also known as 6-dimensional (6D) tracking, is an optional feature that computes the position and orientation of a tracked rigid body from a single camera view.

The motion of the rigid body can be described with six parameters: three positions coordinates (x, y and z), which gives the position of a specific point on the body, and three attitude angles (roll, pitch and yaw), which gives its orientation in space.

The term 6DOF refers to these six parameters. TEMA often refers to these parameters as the 6D position of the body.

6degreesoffreedom

TEMA Lens calibration

The inaccuracy of a lens is called lens distortion. TEMA uses a mathematical model of the distortion to correct the image data from the camera.

The lens calibration is carried out by taking a sequence of images of a target board, importing into the program the coordinates of the target positions relative to the lens center, and tracking each target through the sequence. From these measurements the lens distortion and focal length is calculated.

TEMA has two options for calibration. One is for custom made calibration targets and run with Image Systems Software and the other uses targets and software supplied by Aicon 3D Systems Gmbh and integrated into the TEMA software.

Lens calibration Aicon: The calibration board is produced by Aicon 3D Systems Gmbh. Parts of the Aicon Software is integrated into TEMA. The Aicon Lens calibration applies to the German National Bureau of standard requirements. The user just holds the board at random positions in front of the camera and takes an image sequence. The TEMA program handles the rest automatically.

CalibratingCamera
Calibrating Camera
Aiconcalibrationboard
Aicon Calibration Board

 

Lens calibration Image Systems: Uses custom calibration boards. The customer presents a target model to the program before calibration. Some customers are using 2 dimensional boards (the Aicon board is 3 dimensional), the distance between camera and the board must then be measured as well.

The calibration is normally performed prior to the test and the result is saved to file. It is possible to save calibration results for many different camera/lens combinations. During the actual analyze the operator choose which calibration to apply.

Airbag Contour tracker

In Airbag contour TEMA searches the object boundary to provide an outline around a body, for instance an airbag.

TEMA offers two methods to find the outline. Method one uses threshholding to find the color or grayscale difference between the body and the background.

Method two looks for edges between different surfaces. This is often used when the color or grayscale difference between the object and the background varies. The airbag contour tracker is also used in applications like fuel injection development.

AirbagContour

Airbag Volume

In TEMA Airbag Volume a full 3D model of the airbag is reconstructed from multiple video sequences.

The volume is calculated out of the reconstructed 3D model. The accuracy of the volume estimate depends on the number of cameras used in the set-up.

With 3 or more cameras the error is less then 10%.

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MXT Tracker

MXT Targets is a special target used in the German Automotive industry. The tracker algorithm finds the symmetry centre of the target.

MTXTracker

TEMA Viewer

The results of a tracking session can be exported to a self-running CD that allows the recipient to rerun the tracking with the images, graphs and spreadsheet data synchronized. Data from this can be copied into another document. This viewer does not require any program installation to run it. This same viewer can be loaded onto a network for shared use.

CDViewer

Available configurations

TEMA is also offered in a number of different entry levels, where your specific application determines the level of TEMA you require. An entry level can over time be updated to a higher level of TEMA. A summary of the functionality is described below.

TEMA Starter 1:

Allows tracking of single point with correlation tracker. Possible to plot one point and make table of positions.

TEMA Starter 2:

Allows tracking of 5 points with correlation tracker. Possible to plot points and make tables of positions, velocity and acceleration. Some additional scaling functionality.

TEMA Lite:

Starter 2 plus quad tracking, X/Y diagrams and export of data. A TEMA Lite user has also possibility to upgrade to the major TEMA options like 3D, 6D etc.

Videos

Note: The high speed movies were all analyzed with this software. And all have been greatly reduced in resolution and compressed in size so we can show them to you on the web. Movie quality directly from the camera in the software is superior to what you will see here.

            

 

 

 

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