# Edge Mode Scoring

Once the Caliper tool has filtered the projection image and produced a list of the edge peaks that exceed the contrast threshold that you specify, the tool computes a score for each edge pattern candidate within the image. This score lets your application determine which of the edge pattern candidates in the image represent instances of the actual edge pattern of interest, as defined by your edge model.

The Caliper tool computes the score for each edge pattern candidate by comparing the edge pattern candidate with the edge model, based upon a set of scoring criteria that you supply. These criteria are called scoring methods.

A scoring method has two parts:

- A scoring method type that defines what measurement of the edge you want to evaluate
- A scoring function that defines the relationship between the raw measure and the mapped score that will be generated for the scoring method

You can define several scoring methods. The Caliper tool applies all the scoring methods to each edge pattern candidate within the image and returns an overall score for each edge pattern candidate. By defining appropriate scoring methods, you can ensure that the edge pattern candidate with the highest score will be the edge pattern of interest.