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Frequently Asked Questions (FAQ)

Queries

I have set up a Find Faces query, but no results are returned.

Make sure that the Face recognition analysis parameter is enabled for the video you are querying.

I am not getting any results for my Free Text Search With Threshold query.

Make sure that the object type you are querying for is the selected one during query configuration - by default, this is set to Background.

How can I improve the accuracy of my queries?

  • Adjust the chosen object type's confidence threshold: lowering the threshold may yield more results, but be aware that it could also increase false positives, and vice versa.

  • Draw a precise region of interest (ROI) around the area you want to search. This helps focus the query on the relevant area.

I would like to search for an object not included in the predefined object types. What can I do?

  • In Free Text Search and Free Text Search With Threshold, you can use the Background object type to search for elements in the background not covered by other object types.

  • For other query types, you can create a custom object type by creating a text-based classifier.

Can I edit a query after it has been run?

  • No, once a query has been created and run, it cannot be edited. You can clone the query to create a new one with the same settings, and then modify the cloned query as needed.

Videos & Storage

My query used to return results, but now I am only getting results with black thumbnails.

This usually indicates that the retention period for the video has expired, and the video has been deleted from the system.

An old result of my query no longer shows a thumbnail image.

This is most likely due to the storage space allocated to the video being exceeded, which causes older video segments to be deleted.

Can I change analysis parameters after adding a camera/video?

  • No, analysis parameters are set when adding a camera or video and cannot be changed later. If you need different analysis parameters, you will need to remove the camera/video and add it again with the desired settings.

Image Sets

How can I add new entities to an image set already in use by a query?

At the moment, you cannot add new entities to an image set already in use by a query. You will need to create a new image set with the additional entities and then create a new query using that image set.

Users & Permissions

I have assigned a user to the Admin role, and they cannot see certain videos or folders. Why?

  • The Admin role has no access to videos or queries. The role is designed for managing users and system settings only. To grant access to videos and queries, assign the user to the Viewer role to see or Manager role to edit videos and queries.