What does the Matching Threshold in Auto Tie-Point collection mean?
Matching Threshold is the minimum correlation score that will be considered to be a valid match. Setting the matching threshold adjusts the quality statistic so that only the best correlations are considered successful matches, or so that less successful correlations are accepted. This will not affect the speed, but rather the total number of points that you get. For example, if you have really clear, high-resolution data, you may be able to set your matching threshold very high, to 0.85 or better. This will make sure that you get very highly correlated points, and won’t accept any questionable matches. However, if you are dealing with lower resolution, or fuzzier data, you are likely to get very few successful matches with a threshold of 0.75 or better. In this case, you would change it to a lower value such as 0.6 in order to accept more points.
