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Artec AMK Manual

Metrology kit
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Artec Metrology Kit
Version 1.0 Manual

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Summary of Contents for Artec AMK

  • Page 1 Artec Metrology Kit Version 1.0 Manual...
  • Page 3 Artec Metrology Kit Introduction About this manual Starting the software Managing components Templates Settings: Image measurement Settings: Adjustment Settings: Point assignment Settings: Bundle adjustment Quality criteria Cameras Camera data Calibration data Image transfer References Scales Settings Camera settings Performing a measurement...
  • Page 4 Introduction The Artec Metrology Kit (AMK) is a hand-held optical coordinate measuring system used for the mobile inspection of parts and components. The AMK system is typically used to measure objects up to and including vehicle size. The integrated software of the measuring system enables fully automatic evaluation of digital images, regardless of the camera type employed.
  • Page 5 This manual including all its parts is subject to copyright. Copies thereof, even in the form of extracts, may only be made with the express permission of Artec 3D. This manual has been carefully prepared. However, we cannot guarantee the correctness of the contents. Since mistakes cannot be completely avoided despite all efforts, we are grateful for any feedback in this respect.

  • Page 6: Managing Components

    Managing components The component management window can be used to create measurement templates along with all the necessary components. It can also be used to make general settings for the Artec Metrology Kit. The operating concept for this overview is the same for every component. The meaning of the icons and structure of the overview pages are therefore explained at this point in the manual: Figure 1.Component management window of the Artec Metrology Kit software...
  • Page 7 Describes the functions of the icons: Icon Function Create new template Import Export Edit Duplicate Delete Table 3. Icons in the component management window Templates Templates can be used to compile all components required for a measurement and to make all necessary settings for the measurement.
  • Page 8 Figure 2. Templates A template consists of a combination of components (scales, references, and cameras), which can be viewed and selected on the Components tab. Figure 3. View of the selected components Click to change the component selection. A tree view of all available components appears. Entire groups of components or individual components can be selected or deselected here.
  • Page 9 Managing components Figure 4. Component selection The Settings tab can be used to adjust measurement parameters and define quality criteria for assessing the success of the measurement. A description of the settings and their effects is provided in the following chapters. Settings: Image measurement The Settings tab can be used to adjust measurement parameters and define quality criteria for assessing the success of the measurement.
  • Page 10 Anco and 14-bit code. Depending on the selected code, a valid point number range is produced, which can be further restricted under Index values (see below). Generally, only 14- bit coding is used with the AMK software. Target color Users can select between black and white targets. Simultaneous measurement of black and white targets is also possible.
  • Page 11 Managing components Function Description Max. quotient of the ellipses axes Maximum permitted ratio between the long and short main axis. Recommendation: Increase the value to be able to perform measurements in images that have been taken at a very flat angle. Size of reference in image Ratio between the reference size and the area of interest of the image.
  • Page 12 Settings: Point assignment Lists the parameters for the point assignment: Function Description First non-coded point number Specifies the number from which the numbering of non-coded marks begins. Default value is 1000. Point assignment Specifies the accuracy of the point assignment. The more accurate the point assignment, the slower the assignment becomes.
  • Page 13 = moderate success = failed Some criteria for this assessment can be adjusted. These criteria serve as indicators for the quality of a measurement. Default values based on empirical values for standard use of the AMK software are preset. Figure 7. Quality criteria settings...
  • Page 14 Criterion Description Scales deviations Deviation of the measured distance of a scale from the distance specified for the scale. Green colored result: The entered limit value is met. Yellow colored result: The entered limit value is not met. Red colored result: The MPE specifications for measuring systems (MPE = maximum permissible error) are also not met.
  • Page 15 Information Description Camera name Name of the camera. The camera is displayed under this name in the AMK software. Camera description Brief description of the camera (optional). Camera type Type of the used camera. Each type offers different options for the camera data and the image transfer.
  • Page 16 Figure 8. Figure 8. Camera data / Calibration data For each AMK Professional system, special IOR data (interior orientation) is supplied that may deviate from the standard. This serves to increase the accuracy of measurements. When working with a pre-calibrated camera system, the selections for the relevant parameters must be cancelled.
  • Page 17 Managing components References Points with a known geometry can be used as a reference in a measurement, either instead of or in combination with scales. When reference points are used, scales only serve to check the measurement results. References can contain coded and non-coded points. When a reference is newly created or edited, a window opens for entering all relevant reference data.
  • Page 18 Scales Scales are objects with two coded or non-coded points at a defined distance from one another. Unlike the reference cross, the distance defined as the scale is included in the calculation as heavily weighted additional information. This information facilitates the high-precision scaling of the measurement object so that at least one scale must be specified when creating a measurement template.
  • Page 19 Theme Switch between a light and dark theme for the user interface. C1 Pilot Lock the user interface of the C1 Pilot application for user interaction while it is used by AMK software. Units and decimal places Set the units and decimal places of data and angles.

  • Page 20: Camera Settings

    Camera settings Before starting a measurement, the camera settings must be checked. The settings for the currently selected camera can be accessed on the component management window by clicking Before the actual measurement, two to three test images are taken of the signaled measurement object (from the front and at an angle).
  • Page 21 If many points in the image have a grey scale value in excess of 220, the images will be overexposed, which can impair the accuracy of×the image measurement and thus the entire AMK evaluation. If the results are still unsatisfactory, changes should be made to thecamera settings. Camera settings for brightness adjustment: •...

  • Page 22: Performing A Measurement

    Various common image formats can be processed. All formats of the digital cameras used by Artec 3D are implemented. Figure 14. Selecting and loading images and starting the measurement To ensure maximum accuracy, the JPG format must only be used with maximum quality or with the lowest...
  • Page 23 Performing a measurement Dashboard The progress of the measurement process is displayed on the Dashboard tab for all steps of the measurement. The displays (from left to right) are as follows: Overall progress of the measurement Point assignment step Image measurement step Adjustment step Pre-orientation step Figure 15.
  • Page 24 If the calculation is successful, the overall progress display for the adjustment is displayed in green. Otherwise, the progress indicator appears in The information for analyzing the accuracy of an adjustment or AMK measurement is described in the chapter Quality criteria.
  • Page 25 Performing a measurement Individual quality criteria The quality criteria set in the template are used to classify the status of the measurement as successful or unsuccessful. If at least one of the activated criteria is not met, the status of the message appears in red. Details on the used criteria and whether or not they have been met can be checked by clicking the Overall progress indicator.
  • Page 26 3D view On the 3D View tab, the measured 3D points are displayed in a 3D view along with the camera positions during image capture. Right-click to open the context menu. Here the display of the point numbers, cameras and scales can be activated and deactivated.
  • Page 27 Performing a measurement Lists the functions: Function Description Rotate Left mouse button + free movement (default: around focal point) Zoom to center of view Right mouse button + upward and downward movement Zoom to cursor position Moving the mouse wheel (scrolling) Shift Shift key + left mouse button Rotate around the screen axis...
  • Page 28 Measured images The Images tab provides an overview of all the images used in the measurement. The images are shown in very small format. To the left of each overview image is a status bar the color coding of which indicates the current status of the measured image. Figure 18. Overview of all measured images used Table Lists the functions: Color Number of rays...
  • Page 29 Performing a measurement Points After the adjustment, the 3D coordinates of the measured object points are displayed on the Points tab along with their standard deviations in the unit selected by the user. The table can be sorted by column. The column Active is used to deactivate and activate points for the measurement. But the result of the measurement only changes if afterwards the recalculation is carried out again.

  • Page 30: Evaluating Results

    If the calculation failed, the first step is to establish when the measurement was aborted. Then check the possible error sources in Table 23. If the specified causes do not apply, please contact the support of Artec 3D. Version 1.0 Manual...
  • Page 31 Evaluating results Measurement failed during... Cause Solution Pre-orientation Incorrect reference cross/object selected in Change the reference object in the template (chapter the template. Templates). Incorrect camera in the template. Change the camera in the template (chapter Templates). Reference cross/object is too small or missing Capture the area of the cross and its environment from in the measured images.
  • Page 32 The Bundle report tab (see Figure 21) displays a comprehensive record of the bundle adjustment Figure 21. Bundle report Post-processing and repeating a measurement A completed message can be post-processed and repeated. Click to display the options for post-processing a measurement. Version 1.0 Manual...
  • Page 33 Figure 22. Post-processing and repeating a measurement Lists the available options for post-processing a measurement: Option Description Add more images Inclusion of additional measured images. Addition of the images to the existing measurement. Bundle adjustment The bundle adjustment should be performed at the end of each measurement, before reusing or processing the measurement data.

  • Page 34: Icon Glossary

    Icon glossary Icon Function Icon Function Adapter group add Default retro Adapter group Default standard Adapter multi pnts add Delete forever Adapter multi pnts Export File export Adapter two pnts add First Adapter two pnts Fixpoints Add from folder Alert outline Image add Image Apply settings...
  • Page 35 Version 1.0 Manual...
  • Page 36 Artec 3D Headquarters 4 Rue Lou Hemmer, L-1748 Senningerberg, Luxembourg +352 2 786-1074 +352 2 600-8670 support@artec3d.com www.artec3d.com...