Circle Fitting

One method for finding craters is fitting circles to the resulting edges from running a Canny Edge Detector on the image. The first step is to run the Canny Edge Detector on the data. The result is shown in red.

The next step is to perform circle fitting with the resulting pixels (edges) from Canny. We use the Taubin method for circle fitting. The circles are shown in magenta.

Note: the two images above were generated with different Canny thresholds; we need to come up with a way to choose the threshold. Perhaps we can use PatternExplorer to help us decide what this parameter should be a function of.