cnetcombinept

This program will create a control network by combining control points from one or more control networks into single points that satisfy either ground or image distance criteria. It employs a more robust technique than cnetmerge. This technique evaluates each control point in the combined network by applying a search of radial spatial distance (in meters) to collect all points that may be of the same feature. This search will find a list of candidate control points, i.e. points that the algorithm has found might be matches. Distance statistics of common control measures from the image are computed using the source point and each candidate control point. The MODE parameter for this program specifies the maximum distance, in IMAGE (pixel units) or GROUND (meter units), allowed to determine whether the two control points are measurements of the same image feature. If the average of all common measures is less than or equal to the distance (in the given IMAGE or GROUND units), then all control measures from the candidate control point are copied to the source control point (increasing image match depth) and the candidate control point is disabled so that it will never be considered for another merger. The now augmented control point is added back to the search pool for further merger considerations.

When all control points have been searched and all mergers have taken place, a new single combined control network is created.

Note that this application can be ran more than once and directly on the output of any past run (in other words, you need only provide a single network, if desired).