What is similarity level in CyberLink Face Finder? How do I use the settings to control the photo search results?

The similarity level is acting like the face detection strictness setting for CyberLink Face Finder's AI search engine.

Generally, the higher the similarity level, the lower the number of photos that will be accepted and displayed in the search results. This is because the face detection strictness is higher.

For instance, if the search results for your photos contain many faces, some of which do not match the faces you specified, you can consider raising the similarity level. A higher similarity level could help remove photos from the search results.

If the search results for your photos display fewer photos than you expect, you may consider lowering the similarity level to display more photos. 

To adjust the similarity level, click the similarity level filter at the top side of your Search Results area, and then drag the slider to adjust the preferred similarity level/percentage.