OpenCV-Face-Recognition | Real-time face recognition project with OpenCV and Python | Computer Vision library
kandi X-RAY | OpenCV-Face-Recognition Summary
kandi X-RAY | OpenCV-Face-Recognition Summary
Real-time face recognition project with OpenCV and Python
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Top functions reviewed by kandi - BETA
- Get faces and labels for each face .
OpenCV-Face-Recognition Key Features
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QUESTION
I have a project where I need to include face recognition
in it. I am referring to this article. This article is using open-face
to get the face embeddings
and its saving all the embeddings in a pickle file. Then its passing the face embeddings data to support vector machine
which generates another pickle file. This file is later used to recognize and predict the face.
This has been working and is giving me more than 80% accuracy. But this article has not explained on how to calculate euclidean distance
. This I needed for my own research work.
I can easily calculate euclidean distance
between the face embedding of test image and face embeddings present in pickle file but I am not able to understand how to set the threshold value so that any distance more than that will be tagged as unknown
.
Can anyone please point me to some article where this has been explained and I can follow up from there. I have tried searching many articles but didnt get much results on this. Please help. Thanks
...ANSWER
Answered 2020-Apr-15 at 15:45You can build 2 ( normal ) distributions.
- distances between same person's faces
- distances between different faces
Intersection of these distributuins will be the threshold.
QUESTION
from sklearn.preprocessing import LabelEncoder
from sklearn.svm import SVC
import argparse
import pickle
# construct the argument parser and parse the arguments
ap = argparse.ArgumentParser()
ap.add_argument("-e", "--embeddings",default=r"C:\Users\osama\Desktop\opencv-face-recognition\face_detection_model\output",
help="path to serialized db of facial embeddings")
ap.add_argument("-r", "--recognizer", default=r"C:\Users\osama\Desktop\opencv-face-recognition\face_detection_model\output",
help="path to output model trained to recognize faces")
ap.add_argument("-l", "--le", default=r"C:\Users\osama\Desktop\opencv-face-recognition\face_detection_model\output",
help="path to output label encoder")
args = vars(ap.parse_args())
# load the face embeddings
print("[INFO] loading face embeddings...")
data = pickle.loads(open(args["embeddings"], "rb").read())
# encode the labels
print("[INFO] encoding labels...")
le = LabelEncoder()
labels = le.fit_transform(data["names"])
# train the model used to accept the 128-d embeddings of the face and
# then produce the actual face recognition
print("[INFO] training model...")
recognizer = SVC(C=1.0, kernel="linear", probability=True)
recognizer.fit(data["embeddings"], labels)
# write the actual face recognition model to disk
f = open(args["recognizer"], "wb")
f.write(pickle.dumps(recognizer))
f.close()
#write the label encoder to disk
f = open(args["le"], "wb")
f.write(pickle.dumps(le))
f.close()
...ANSWER
Answered 2020-Jan-04 at 17:47You are unpickling an object here:
QUESTION
I went through Pyimagesearch face Recognition tutorial, but my application need to compare two faces only, I have embedding of two faces, how to compare them using opencv ? about the trained model which is use to extract embedding from face is mentioned in link, I want to know that what methods I should try to compare two face embedding.
(Note: I am new to this field)
...ANSWER
Answered 2019-Nov-14 at 05:16First of all your case is similar to given tutorial, instead of multiple images you have single image that you need to compare with test image,
So you don't really need training step here.
You can do
QUESTION
I want to create a directory of the input taken from my python program and give that as an argument to an argParser which is in the same code.
I just basically want to make a directory of the file name the user enter and run so that i can make a dataset of his images into that specified folder.
...ANSWER
Answered 2019-Aug-29 at 17:54You should make --output
argument as "not required", and set dirpath
as default value:
QUESTION
First of all here is my github link for the question.
And here is my question:
I would like to do a face comparison function using Python. And I can successfully(?) recognize faces using OpenCV. Now, how do I do the comparison thing?
What I understand is this:
In general Machine learning approach, I need to gather lots of data about that particular person and finalize it using a CNN.
However, I just got 2 images, how do I do the comparison? Should I think it in terms of classification or clustering (Using KNN)?
Thank you very much in advance for all your help.
...ANSWER
Answered 2017-Sep-12 at 10:02You need to learn similarity metric for faces. It will allow to extract features good to distinguish different persons. Then you'll be able to find dissimilarity (distance) between them. You can read in more detail here for instance. kNN and such things are useful to find groups of similar faces, but it need to use features, extracted before.
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Install OpenCV-Face-Recognition
You can use OpenCV-Face-Recognition like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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