# ViDi Tool Chains

Each of the Cognex ViDi Tools has a unique output, and that output can be used an input to another tool, in what is referred to as tool chaining. In the image below, a Blue Locate Tool is providing a location, which is similar to using a pattern tool in a traditional vision application to create a fixture. The location output by the Blue Locate tool is used by the Red Analyze Tool to orient and create its view, allowing the detection analysis to be performed in the same area of the image, based on the model output by the Blue Locate tool. Finally, the Green Classify Tool is used to classify the output of the Red Analyze tool, based on the classification criteria established for the Green Classify tool.