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- The interface recognition algorithm takes the average of each of the rows of pixels in the region of interest to using the color band(s) that are selected to produce a single array of light intensities.
- A running average over the length set by Smooth Length is used to filter out some of the noise in the image.
- Numerical derivative is taken
- The minimum value of the derivative is an indication of the location where the image transitions from light to dark in the direction of top to bottom. This direction definition is used because images are defined with the top left corner being zero, zero.
- The pixel location of the minimum value of the derivative is converted into physical space given the location of the field of view.
- If the absolute value of the minimum value of the derivative isn't greater than the minimum derivative magnitude, then the interface is assigned to be at the bottom of the region of interest.
Saving the Configuration for use by Process Controller
The camera configuration information is saved in a file in C:\Users\username\AppData\Local\ProCoDA\CameraName.txt. The settings for image analysis are saved in C:\Users\username\AppData\Local\ProCoDA\ProCoDA.ini. These settings are then used by Process Controller.
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