In the Options tab we will have several general options applied to all LPR Settings:
•Save images to the database: LPR saves the images of recognized license plates on the server. With this option, the images will be kept in the system database (Not recommended for environments with many records as it will overload the database file).
•Save images to disk: Images associated with LPR records will be stored in a configured folder on disk (Recommended).
oSave images from surrounding cameras: Select this option to also store images from surrounding cameras on disk.
▪By default, images from surrounding cameras are consulted in the camera recordings, however, in some cases it is necessary to keep these records for longer and in this case the images can be saved together with the recognition image.
▪This option is only available when images are saved to disk instead of the database.
•Delete LPR records older than X days: Deletes LPR records that have been stored for more than the configured X days.
•Resize stored images if larger than: Record images are stored in the original captured resolution by default, however, to save disk space (If the original image is of high resolution), you can activate this option and the system will resize the images to a maximum resolution. Activating this option will not resize images already recorded from previous records and will only affect new records.
•Image buffer size for server processing: Allows you to configure the image buffer size for processing. This buffer is used when the LPR Server is overloaded (which can occur when image recognition from several cameras is activated simultaneously), then the system will temporarily store the images in memory (before discarding) for a few seconds in order to wait the LPR Server responds to image processing. A high buffer value can improve processing and recognition results as otherwise the images would be discarded if the LPR Server was overloaded, however, it could also increase the recognition response time.
•Speed Metric: Some cameras can return the speed at which the vehicle passed the camera along with the license plate. In these cases, you must choose which speed metric the system will use: km/h or mph.