# Finders

Finders are used to locate features (such as fiducial marks, corners, etc.) on calibrated images. One finder will have one feature finding task in the generated project. This task can be used for both train time and run time feature finding.

## Add

Click Add Finder to add one finder component.

## Connect

A finder component need to be linked to a calibration component before it can be configured inside. Once the link is made, a dialog will pop up saying the finder type will be changed to Point, click "Yes" to continue.

## Set

In the opened dialog box of the finder component, user can configure the feature type and number of images per camera.

Type

Option | Description
--- | ---
Custom | When custom is chosen, the FeatureExtractorSubTask inside the corresponding feature finding task generated by the Configuration Wizard will be empty. The idea is that the users can customize this sub task. One advantage of selecting 'Custom' type is that when the wizard is rerun, the user customization contents in the FeatureExtractorSubTask will be maintained. For the other types, AlignPlus will overwrite the sub task contents to default settings.
None | Default option when finder is not connected to any calibration component.
Point | Select this option to have the feature finding task and the corresponding configuration HMI to find point features.
Line | Select this option to have the feature finding task and the corresponding configuration HMI to find line features.
Generic Feature | Select this option to have the feature finding task and the corresponding configuration HMI to find generic features.
Multiple Parts | Select this option to have the feature finding task and the corresponding configuration HMI to locate multiple parts using point features. Current multiple parts function only supports single camera single position pickup applications.
AOI Features | Select this option to have the feature finding task and the corresponding configuration HMI to locate generic features for inspection applications. The auto-generated corresponding feature finder will be a generic features finder.

Tip: It is not recommended to make any changes to auto-generated contents in FeatureExtractorSubTask of a feature finding task to avoid possible damage to it. However, if the user is confident enough to make modifications in it, and then would like to keep these modifications when the wizard rerun is needed, it can be done in this way: 1) choose point/line/generic feature type in finder component for the first time of project generation; 2) make modifications inside the FeatureExtractorSubTask that are very necessary for the application; 3) change the feature type to 'Custom' in the finder component and rerun the wizard.

Number of Images per Camera

Specifies the number of images that the corresponding feature finding task will capture from each camera at each acquisition position. The default number is 1, increase it if the same camera needs to capture multiple images of the part under different exposure and lighting settings.

Related Data

Table Column | Description
--- | ---
Calibration Name | Name of the calibration component whose output terminal is connected to current finder component
Terminal Index | Index of the corresponding input terminal of the calibration component.
Position Index | Corresponding position index in the calibration component
Will Acquire | A check box that indicates if the image at the corresponding Calibration Name, Position Index, and Terminal Index will be acquired during the feature finding process. If an image are not required for feature finding, you can check this option off.

## Delete

If the finder component is connected to a part, and the part links to an alignment, then you need to first delete alignment component, then the part, and the finder component can be deleted.