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To ensure the correct CARMEN-Auto module operation, do the following:
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Setting up the CARMEN-Auto program module is performed in the following way:
- Go to the CARMEN Module object settings panel, which is created on the basis of the LPR Channelchannel object.
Enter the value of minimal minimum validity of recognition in percent in the Minimum validity of LP type recognition field (1). Validity is defined determined by the degree of similarity between results of recognition and the LP template and it allows distinguishing the LP from other marks unrelated inscription on the vehicle.
Info title Note. The validity is displayed in the List of parameters of the Active monitor dialog box.
- In the LP delimiter field (2), enter symbols which will separate LP symbols from region symbols. Maximum number of delimiter symbols – —2. If a recognized license plate is to must be written without any delimiters, leave the LP delimiter field emptyblank.
- In the Recognition frame rate, fps field (3), enter the number of frames per second processed by the recognizer. If you enter 0 or leave the field emptyblank, the recognizer will process the maximum possible number of frames.
- Click the Apply button to save the changes (4).
Setting up the CARMEN-Auto program module is completed.
For the best quality of recognition, consider the following characteristic while when configuring the CARMEN-Auto configuringmodule:
- The less lower the resolution, the higher the quality of recognition. It ie is recommended to use the following resolution: 320x240 - –800x600px. It is highly recommended not to use resolution more than 1.2 Mpx.
- It is recommended to specify the search area. It results in decreasing of factual resolution, which go is fed to the entry on input of the recognizer. The less smaller the area, the lower the less resolution, and consequently, the higher the quality of recognizingrecognition.
- It is recommended to use recognition by trigger command (motion detection, the Parking mode) instead of permanent recognition. If a lot of recognizers are to many recognizers must be configured on the one server, use the Parking mode. Detailed Foe the detailed information about Parking mode is presented in the , see Scripts used in the Auto-Intellect software package section.
The less fewer recognizers are created on the one computer, the higher speed of video processing the quality of recognition, because the speed of video processing is shares shared between all created recognizers. Low speed of processing results in plate recognition delay and bad quality of recognition.
Here's the approximate data of speed of video processing:
For the Common characters template:Resolution FPS 320x240 19 480x360 18 640x480 13 1024x768 8 1280x960 8 For other templates:
Resolution FPS 320x240 12 480x360 9 640x480 7 1024x768 5 1280x960 4 Info title Note. These The data can differ decreasingly of frequency move down in frequency of processed frames at different lighting conditions, on different processors, etc.