Method in opencv for percentile similarity of two faces?

asked 2017-12-11 01:49:27 -0600

zzywd01
6 ●2

Hi guys, is there any method in openCV to get the similarity score in percentage of two faces? I know that SIFT is super to solve this case, but I cannot find any good way to get the percentile result. Could anyone give me some hints? I'm a Java user, but any other language are welcome :)

Comments

if you only have 2 images, this is called verification . have a look here

berak ( 2017-12-11 01:53:26 -0600 )edit

@berak Thanks for the reply. In fact, I want to compare one test sample with the whole data base, and get the result with the highest percentage.

zzywd01 ( 2017-12-11 02:04:22 -0600 )edit

did u find any solution if yes so kindly share with me i am doing same this project on java/android

vickyrajpoot ( 2018-04-09 06:13:00 -0600 )edit

add a comment

answered 2017-12-11 06:11:11 -0600

StevenPuttemans

20029 ●16 ●82 ●207 http://stevenputtemans...

@zzywd01, so you need to find

distance between your sample and all database samples
find the largest distance (worst match)
normalize the range [0, largest distance] towards [100%, 0%]

In principle this will always depending on the dataset used, but thats quite normal in my opinion.

edit flag offensive delete link

Comments

And even in my opinion, you could start from [smallest distance, largest distance], because 0 will only be obtained by the exact same image.

StevenPuttemans ( 2017-12-11 06:12:44 -0600 )edit

Thank you steven. Is this similar to the value "confidence" which can be obtained from faceRecognizer.predict(test sample, predLabel, Confidence)? It seems that I should normalize the confidence to get the percentage.

zzywd01 ( 2017-12-11 09:28:50 -0600 )edit

Yep thats exactly that I think!

StevenPuttemans ( 2017-12-12 08:15:45 -0600 )edit

add a comment

Method in opencv for percentile similarity of two faces?

Comments

1 answer

Comments

Links

Question Tools

Stats

Related questions

Method in opencv for percentile similarity of two faces? edit

Comments

1 answer

Comments

Links

Question Tools

Stats

Related questions

Method in opencv for percentile similarity of two faces?