Setting up the road markings parameters

The road markings setup should be specified: number and location of the driving lanes and traffic directions.

To set up the markings parameters, do the following:

1. Open the Hardware tab in the System Settings window (1).
2. In the object tree on the left side of the Hardware tab, select the Traffic Detector object representing the Traffic Detector module to be set up. The settings panel of the selected object will open on the right side of the window (2).
   
3. Click the Markings setup button and select the Set markings item (3).
4. The Advanced settings window opens.
5. In the Advanced settings window, select the video frame to be used for markings setup.
   To select the frame, click the Select frame button at the appropriate moment.
   
   The Advanced settings window closes and the Keypoints window opens.

6. In the Keypoints window, set the keypoints, signifying the markings.

   Note.

   A keypoint is a small object or a marking easily identified in the image. The actual road markings can be used as key points. No more than two points should lie on a single straight line. The keypoints should be as far from each other as possible, although inside the camera viewing zone. The farther the keypoints are from each other, the more precise will be the setup. Measure and write down the coordinates of actual keypoints on the road relative to any origin. These will be the ground coordinates of the keypoints.

   

   At this stage you must specify four keypoints and their coordinates. By default keypoints are set automatically.

   To change the keypoints and their coordinates do the following:

   6.1 Remove from the screen the keypoint whose coordinates you want to change. This requires a point with the mouse and hold down the «Shift», press the left mouse button.

   6.2 Click the position for a keypoint in the video frame and press the left mouse button.

   6.3 In the zoom window that opens, mark the keypoint and enter the ground oordinates in the X and Y fields.
   

   6.4 Click OK.

7. To go to the following step of setting press the Next button.
8. The Road marking window opens. This window allows setting the road edges, number of lanes and the driving directions.
   
   By default the road marking is set automatically.
   To set the markings, do the following:
   8.1 To remove the road edge Shift click one of its endpoints by pressing the left mouse button (a).
   8.2 To set the road edge, click the road edge in the image, press the left mouse button, drag the cursor to another edge of the road in the video frame, release the button (a).
   8.3 Set the number of driving lanes (b).
   8.4 Set the driving direction for each lane (c).
   To go to the following step of setting press the Next button.
9. The Marking result window opens.
   
   The image with the road markings is displayed as the result of the setup.
10. Set the Projection checkbox to view the projective image.
    
    Click the Finish button to complete the setup.
11. Click Apply (4).

The road markings are now set.