train face then recognize

app_face_recog.py

import cv2
import os
from face_recog import save_detected, detect_face, train_face


def check(trained_filename):
    model = cv2.face.LBPHFaceRecognizer_create()
    model.read(trained_filename)

    capture = cv2.VideoCapture(0)
    while True:
        captured, frame = capture.read()
        if not captured:
            break

        detected, marked_image = detect_face.detect_faces(frame)
        for gray_face, (x, y, _, _) in detected:
            train_id, confidence = model.predict(gray_face)
            if confidence < 50:
                cv2.putText(marked_image, f'{train_id} {confidence:.2f}', (x, y), cv2.FONT_HERSHEY_COMPLEX, 0.5, (0, 255, 0))

        cv2.imshow('Face', marked_image)

        if cv2.waitKey(10) > 0:
            break

    capture.release()
    cv2.destroyAllWindows()


def ready(path):
    save_detected.save_detected(path)


def train(face_image_folder, trained_save_filename):
    train_face.train(face_image_folder, trained_save_filename)


if __name__ == '__main__':
    check(f'{os.path.dirname(os.path.abspath(__file__))}/trained.xml')

detect_face.py

import os
import cv2


def detect_faces(image):
    if image is None:
        return None, None

    gray_image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
    classifier = cv2.CascadeClassifier(f'{os.path.dirname(os.path.abspath(__file__))}/haarcascade_frontalface_default.xml')
    coords = classifier.detectMultiScale(gray_image, 1.3, 5)

    detected = []
    for coord in coords:
        x, y, w, h = coord
        cv2.rectangle(image, (x, y), (x+w, y+h), (255, 0, 0), 2)

        face = gray_image[y:y+h, x:x+w]
        resized = cv2.resize(face, (200, 200))

        detected.append((resized, coord))

    return detected, image


if __name__ == '__main__':
    detect_faces(None)

haarcascade_frontalface_default

download from https://github.com/opencv/opencv/blob/master/data/haarcascades/haarcascade_frontalface_default.xml

requirements.txt

opencv-contrib-python==4.1.2.30

save_detected.py

import os
import cv2
from face_recog import detect_face


def save_detected(path):
    os.makedirs(path, exist_ok=True)

    capture = cv2.VideoCapture(0)

    face_count = 0
    while True:
        captured, frame = capture.read()
        if not captured:
            break

        detected, marked_image = detect_face.detect_faces(frame)
        if not detected:
            continue

        for gray_face, (x, y, _, _) in detected:
            face_count += 1
            cv2.imwrite(f'{path}/{face_count:03d}.jpg', gray_face)
            cv2.putText(marked_image, str(face_count), (x, y), cv2.FONT_HERSHEY_COMPLEX, 1, (0, 255, 0), 2)
        cv2.imshow('Ready Training Faces', marked_image)

        if cv2.waitKey(10) > 0 or face_count == 100:
            break

    capture.release()
    cv2.destroyAllWindows()


if __name__ == '__main__':
    save_detected(f'{os.path.dirname(os.path.abspath(__file__))}/faces')

train_face.py

import cv2
import numpy as np
import os


def train(path, trained_file):
    train_data, labels = [], []
    for idx, file in enumerate(os.listdir(path)):
        image = cv2.imread(f'{path}/{file}', cv2.IMREAD_GRAYSCALE)
        train_data.append(np.asarray(image, dtype=np.uint8))
        labels.append(idx)

    if len(labels) == 0:
        return None, None

    labels = np.asarray(labels, dtype=np.int32)

    model = cv2.face.LBPHFaceRecognizer_create()
    model.train(np.asarray(train_data), np.asarray(labels))

    model.write(trained_file)

    return model


if __name__ == '__main__':
    train(
        f'{os.path.dirname(os.path.abspath(__file__))}/faces',
        f'{os.path.dirname(os.path.abspath(__file__))}/trained.xml'
    )

how to install opencv-contrib-python==4.1.2.30

i'm using opencv 4.1 but ther Error cv2.face.LBPHFaceRecognizer_create()

@mazen-tagadeen
pip install opencv-contrib-python or use requirements.txt pip install -r requirements.txt

Thanks But please give me dectionary to opencv Because I'm don't hav dectionary بتاريخ 2020/03/14 11:01 ص، كتب "Dee Kim" <[email protected]>:

…

@juliendkim commented on this gist. ________________________________ @mazen-tagadeen pip install opencv-contrib-python — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or unsubscribe.