To ensure the correct ARH-Containers module operation, do the following:

  1. Make sure that "KB3033929" security update and Hotfix are installed.
  2. If Carmen GX drivers are installed, then they should be uninstalled from Windows. 
  3. Make sure that there is not a single folder with any drivers left at C:\Windows\System32\DRVSTORE\ (if there are folders, they should be removed).
  4. Restart the computer.
  5. Download the Carmen Freeflow 7.3.1 distribution kit from the AxxonSoft website and install it. If an older version was installed earlier, then it should be uninstalled before installing a newer version.
  6. Download the Carmen ACCR-7.3.2 distribution kit from the AxxonSoft website. This distribution kit contains a recognizer that should be installed via the Engine Manager utility. The procedure for installing the SDK using the Engine Manager utility is described in the engine_install_windows.txt file located in the folder with the corresponding recognizer.

The ARH-Containers software module is configured as follows:

  1. Go to the ARH-Containers module object settings panel, which is created on the basis of the LPR channel object.
  2. In the Symbol height group, specify the height parameters for container license plate number symbols on the video image from the camera:
    1. In the Average field (1), enter the average height of the symbol in pixels.
    2. In the Minimum field (2), enter the minimum height of the symbol in pixels.
    3. In the Maximum field (3), enter the maximum height of the symbol in pixels.
  3. In the Slope (%) field (4), enter the slope of the container LP number in relation to the video image received from the camera in percent. The value is positive if the horizontal axis of the LP symbols is tilted down when viewed from left to right, and negative if this axis is tilted up.
  4. In the Min. contrast field (5) enter the estimated difference between the shades of gray of the LP symbols and the background.
  5. In the X in Y (%) field (6), enter the rate of the horizontal symbol resolution to the vertical one in percent. The horizontal resolution is the ratio of the symbol width on the video image to its actual width, and the vertical resolution is the ratio of the symbol height on the video image to its real height. If you put Zero or negative value, then the value will automatically changed to 100.

  6. In the Delay field (7), enter the time interval in milliseconds that should expire in order for the recognition module to display the next number recognition result. A value of zero means no delay.


  7. In the Quality field (8), enter the image quality of the container numbers, starting from which the numbers will be recognized. The value is determined experimentally.
  8. In the Recognition frame rate, fps field (9), enter the number of frames per second processed by the recognizer. If you enter 0 or leave the field empty, the recognizer will process the maximum possible number of frames.
  9. In the Symbol inclination group, specify the slope parameters of the container number symbols on the video image from the camera:
    1. In the Average (%) field (10), enter the average slope of the symbol in percent. The value is positive if the horizontal axis of the LP symbols is tilted down when viewed from left to right, and negative if this axis is tilted up.
    2. In the Minimum (%) field (11), enter the minimum slope of the symbol in percent. The value is positive if the horizontal axis of the LP symbols is tilted down when viewed from left to right, and negative if this axis is tilted up.
    3. In the Maximum (%) field (12), enter the maximum slope of the symbol in percent. The value is positive if the horizontal axis of the LP symbols is tilted down when viewed from left to right, and negative if this axis is tilted up.
  10. In the Checksum test group, make the following settings:
    1. Select the 6 symbols check box (13) if it is necessary to check the checksum of the numbers that consist of 6 symbols.
    2. Select the 8 MOCO symbols and 4 signs check box (14) to check the checksum of the numbers that consist of 8 symbols.
    3. Select the 10 signs check box (15) if it is necessary to check the checksum of the numbers that consist of 10 symbols.
    4. Select the 11 signs check box (16) if it is necessary to check the checksum of the numbers that consist of 11 symbols.
    5. Select the Russian wagon number check box (17) if it is necessary to check the checksum of the Russian container numbers.
  11. Select the ISO filter checkbox (18) if it is necessary to enable the ISO container numbers filtering. When reading a number that consists of 11 symbols, the recognition module will attempt to read the ISO code (examples of ISO codes: GB4310, 22G1).
  12. Select the Long code filter checkbox (19) if it is necessary to enable the long numbers filtering. If the video image does not contain the container number, but contains some other text, the recognition module can display a false container number. The long numbers filtering reduces the likelihood of the false numbers appearing, increases the runtime (by about 5%), and degrades the recognition of the container codes on the images with a container code (by about 0.5%).
  13. Click the Apply button (20) to apply the settings.

Configuring the ARH-Containers software module is complete.