Demo 2: Comparing two images
Released by Brandon Amos on 2015-10-13.
The comparison demo outputs the predicted similarity
score of two faces by computing the squared L2 distance between
A lower score indicates two faces are more likely of the same person.
Since the representations are on the unit hypersphere, the
scores range from 0 (the same picture) to 4.0.
The following distances between images of John Lennon and
Eric Clapton were generated with
|Lennon 1||Lennon 2||Clapton 1||Clapton 2|
The following table shows that a distance threshold of
distinguish these two people.
In practice, further experimentation should be done on the distance threshold.
On our LFW experiments, the mean threshold across multiple
|Image 1||Image 2||Distance|
|Lennon 1||Lennon 2||0.763|
|Lennon 1||Clapton 1||1.132|
|Lennon 1||Clapton 2||1.145|
|Lennon 2||Clapton 1||1.447|
|Lennon 2||Clapton 2||1.521|
|Clapton 1||Clapton 2||0.318|