Does dlib support face 128D space Euclidean distance for c++ function

[Jesse Stone]

Therefore, you can perform face recognition by mapping faces to
the 128D space and then checking if their Euclidean distance is small
enough.

in python is linalg.norm
in opencv https://answers.opencv.org/question/14188/calc-eucliadian-distance-between-two-single-point/
what is Euclidean distance c++ function in dlib

[Adrià Arrufat]

http://dlib.net/dlib/matrix/matrix_utilities_abstract.h.html#length

[Jesse Stone]

arrufat, thank you sir~~

[Jesse Stone]

is this using correct?
dlib::length(face_descriptoreA - face_descriptorB)

[Adrià Arrufat]

It looks like. You should read these:

• http://dlib.net/dnn_metric_learning_ex.cpp.html
• http://dlib.net/dnn_metric_learning_on_images_ex.cpp.html
• http://dlib.net/dnn_face_recognition_ex.cpp.html

[Jesse Stone]

good good good ~~~many thanks~~~~~