Image Detection Stabilization (IDS) compensates for unwanted noise in the image. In the following figure, the vertical dotted line indicates the position of the shadow edge. For empty pipe, the optical image resembles the figure on the left side.
| If there is no signal from the sensor, the image field is crossed over. |
The soft key SLOPE leads to a graph showing the slope (or first differential) of the optical image graph.
| The "empty" optical image may have a vertical left and/or right edge close to the edge of the image. In the example, only the right edge is visible. |