LightControl parameter FC.
- What does it measure?
- Image contrast.
- How does it measure it?
- Edge pixel detection method.
- How does it relate to the previous measurement?
- Average reference value from a group of new scopes.
Broader explanation
This measurement is used to check that the lenses are still flawless and not dirty. This measurement is done to ensure a clear image. It prevents out-of-focus endoscopes from entering the operating room.
The measurement is based on scientific research on blur detection for digital images using Harr Wavelet transformation. This method can quickly and accurately determine whether an image is blurry and to what extent an image is blurry. It is effective against both blob blur and linear motion blur. In addition, its effectiveness is not affected by background in images.
The camera looks through the endoscope at a dome that shows "sharp" contours. During the measurement, the system takes several pictures to form a picture of the status of each lens. The system uses an average reference value of a group of new endoscopes and gives a score from 0 to 100% for this specific endoscope.
The captured images are stored in EndoscopeManager and are displayed in the report.