There are a set of options available for the TEMA 2D product. Below is a summary of these options. Please refer to the TEMA Option description for a more detailed description of these options.

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.

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.

 

 

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. 

                     
Calibrating camera 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.

 

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%.

 

 

 

MXT Tracker

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

 

 

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. 

CD Viewer

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.. 

TEMA Player:

Image viewer and format conversion. It can view all formats that TEMA can view.

 

Features			TEMA Starter I	TEMA Starter II	TEMA LITE	TEMA Automotive
Tracking Algorithm
2D Tracking			X	X	X	X
Correlation			X	X	X	X
Quadrant					X	X
Circular						X
Center of gravity						X
Intersection tracker						X
Tracking features
Number of points to be tracked in one session			1	5	5	unlimited
Constant tracker						X
Virtual points						X
Image Subtraction (tracking feature)					(Included in tracker option)	(Included in Airbag analysis option)
Interpolation of hidden points					X	X
3D with moving cameras					(Included in the 3D option)	(Included in the 3D option)
Import / Export
Import of data files like Diadem, ISO, ASCII						X
Export of data files like Diadem, ISO, ASCII			X	X	X	X
Import of images (AVI,TIFF,MPEG,JPEG and others)			X	X	X	X
Export of images (AVI,TIFF and others)						X
Export of diagrams and images to Word document			X	X	X	X
Scaling
Correction for depth scaling						X
Dynamic scaling				X	X	X
Static scaling				X	X	X
Manually scaling			X	X	X	X
2D coordinate system
User defined 2D coordinate systems						X
Translation of origin						X
Rotation (axes definition)						X
Rotation (offset angle)						X
Visualising coordinate  system						X
Diagrams and tables
X / Y diagram					X	X
X / T diagram			X	X	X	X
Multiple axes (4 axes) X / T diagram						X
Advanced X/Y diagram						X
Time Table			X	X	X	X
Image diagram						X
Point Table						X
3D diagram						(Included in the 3D and 6D option)
Diagram Features
Contour plotting						X
Stick figure plotting						X
Individual setting of horizontal and vertical axis					X	X
Corridors						X
Text Boxes in diagram						X
Setting of measurable scales in diagram printouts						X
Legends in diagram			X	X	X	X
Printing of diagrams to printer						X
Printing of logotypes, test comments						X
Report
Report Generator						X
Analysis and Calculations
Angles between points					X	X
Distances between points					X	X
Filtering of Data  CFC / FIR			X	X	X	X
Velocity and acceleration				X	X	X
Exclude Areas						X
Autofind similar point						X
Autofind new points (Point generator)						X
Automatic Point Group Finder						X
Suggest Target Point Position			X	X	X	X
Image handling
Digital signature						X
Printing of images to printer			*)	*)	*)	X
Image Enhancement						X
White balance			X	X	X	X
* only through cut and paste to Word document
Other
Event Finder						X
Fully synchronized user interface			X	X	X	X
Point zoom			X	X	X	X
Macros						X
Test templates			X	X	X	X
Multi camera views					X	X
Setting of default units			X	X	X	X
Number precision			X	X	X	X
Free setting of Reference Time t0			X	X	X	X
General Options			Available for
			TEMA Starter I	TEMA Starter II	TEMA LITE	TEMA Automotive
Options
Dongle licence			X	X	X	X
Floating license					X	X
3D					X	X
6D						X
MXT tracker			X	X	X	X
Airbag analysis. Including algorithms: Basic Airbag and Advanced Airbag tracker					X	X
Airbag Volume						X
Lens calibration Image Systems						X
Lens Calibration Aicon						X
Viewer						X
Advanced Viewer						X
Outline tracker option (TEMA motion option. Including two algorithms: Basic Outline tracker (threshold based) and Advanced outline tracker (Edge based)					X	not applicable