If the default exposure settings do not produce acceptable results, you can adjust the shutter time, and gain settings of the SharpV context camera to work best with your indoor installation.
Before you begin
- Ensure that the lighting conditions match what is expected during normal camera operation.
- Adjust the zoom and focus of the camera.
What you should know
- Adjusting the exposure settings of the context camera has no impact on LPR performance. Performing this procedure simply improves the quality of the context image.
- If you configure a long exposure time, you might notice motion blur in the context image. This is not apparent when using a fixed license plate for calibration, and might require adjustment after testing the camera in normal operation.
- Information on context images is not applicable to SharpV ITS cameras.
- Log on to the SharpV Portal.
- From the Configuration menu, select the Cameras page.
From the Select your camera drop-down list, select the Context camera.
The live feed from the context camera is displayed.
- From the Lighting type drop-down list, select the setting that best describes the installation's normal lighting conditions.
From the Exposure drop-down list, select Fixed (indoor).
Gain and Exposure time settings are displayed.
- Set the Gain level to the minimum default value (0).
- Adjust the Exposure time until you are satisfied with the image and license plates are clearly visible.
If you reach the maximum Exposure time level and the plate image is still too dark, increase the Gain level.
NOTE: If, due to poor lighting, the plate image is still not visible even after increasing the gain level, or if increasing the gain level adds too much noise to the image, you can select Enable illuminator to turn on the camera's IR illuminator. The IR illuminator makes the plate more visible, but removes color from the context image.
When you are satisfied with the appearance of the plate images in the video feed window, click Save.
The system displays the message Configuration saved successfully.