# Using The Caliper Tool

In general, you will follow these steps to use the Caliper tool in edge mode:

- Define a projection region that encloses the edges of interest.
- Define a filter width that accentuates the edges of interest.
- (Optional) Define a contrast threshold that excludes spurious edges.
- Define one or more scoring methods.
- Apply the tool to an input image.
- Analyze the results.