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SVAUG データシート(PDF) 13 Page - NXP Semiconductors

部品番号. SVAUG
部品情報  Surround View Application
ダウンロード  21 Pages
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メーカー  NXP [NXP Semiconductors]
ホームページ  http://www.nxp.com
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SVAUG Datasheet(HTML) 13 Page - NXP Semiconductors

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System calibration
Surround View Application,
User’s Guide, Rev. 1, 07/2018
NXP Semiconductors
13
• Perform the intrinsic (lens) camera calibration described in Section 5, “Lens calibration”.
• Place the tripod with the cameras to the center of the big calibration pattern (see Figure 11).
• Use the auto_calib_1.1 binary file located in the /App/Build SD card folder. You may also build
the automatic calibration application from sources. See the applicable Surround View Reference
Manual [1] section.
There are five calibration steps in the Automatic Calibration application:
1. Fisheye camera view
2. Fisheye distortion removal
3. Contours’ search
4. Meshes’ preparation
5. Result view calculation
The Automatic Calibration application is controlled using these keyboard keys on the target board:
• “Right arrow” key—go to the next calibration step.
• “Left arrow” key—go to the previous calibration step.
• “F5” key—update the current step.
• “Esc” key—terminate the application.
NOTE
If using the framebuffer or Wayland graphical backends, set the right
keyboard/mouse device names in the settings.xml file. If you do not update
the names with actual values, these devices are not going to work.
6.2. Calibration process
Put the camera system into the center of the calibration pattern. There should not be any other objects on
the calibration pattern except for the camera system. It is also recommended to manually hold the
coaxial cables above the camera stand during the search contours calibration step (see Section 6.2.3,
“Contours”). Go to the /App/Build folder and run the ./auto_calib_1.1 file.
6.2.1.
Fisheye camera view
The first application view shows the fisheye cameras’ frames. You may see the original cameras’
outputs on the screen. The camera view order is shown in Figure 12.


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