所以我创建了一个神经网络(CNN),可以使用 opencv 实时预测一个人的性别,一切都很完美,但是,当我运行 OpenCv 代码时有很多滞后,我的网络摄像头还不错,这里是我的代码
'''
Real-time Face Gender Recognition using Conv-Nueral Network (CNN) and Cv2
Here we predict the save model that it is train
'''
from tensorflow.keras.preprocessing.image import img_to_array
from tensorflow.keras.models import load_model
import numpy as np
import cv2
import os
import cvlib as cv
import imutils
# load the model
model = load_model('gender_detection.model')
# open webcams and initiate the camara
webcam = cv2.VideoCapture(0, cv2.CAP_DSHOW)
classes = ['hombre', 'mujer']
# loop through frames
while webcam.isOpened():
# read frame from webcam
status, frame = webcam.read()
#webcam.set(cv2.CAP_PROP_FPS, 1000)
frame = cv2.flip(frame, 1)
# apply face detection
face, confidence = cv.detect_face(frame) # this detects that there is a face in the camara, cvlib does, but not if it is a man that detects the neural network
# loop through detected faces
for idx, f in enumerate(face):
# get corner points of face rectangle
# this only will draw a rectangle when the cvlib detects the face with the vars giving up there
startX, startY = f[0], f[1]
endX, endY = f[2], f[3]
# draw the rectangle over the face
cv2.rectangle(frame, (startX, startY), (endX, endY), (0,255,0), 2)
# crop the detected face region
face_crop = np.copy(frame[startY:endY, startX:endX])
if face_crop.shape[0] < 10 or face_crop.shape[1] < 10:
continue
# preprocessing for gender detection model
face_crop = cv2.resize(face_crop, (96,96))
face_crop = face_crop.astype("float") / 255.0
face_crop = img_to_array(face_crop)
face_crop = np.expand_dims(face_crop, axis=0)
# apply gender detection face with the model
conf = model.predict(face_crop)[0]
# get label with max acc
idx = np.argmax(conf)
label = classes[idx]
label = "{}: {:.2f}".format(label, conf[idx] * 100)
Y = startY - 10 if startY - 10 > 10 else startY + 10
# write label and confidence above the face rectangle
cv2.putText(frame, label, (startX, Y), cv2.FONT_HERSHEY_SIMPLEX,
0.7, (0,255,0), 2)
# display output
cv2.imshow("Gender Detection", frame)
# press "Q" to stop
if cv2.waitKey(1) & 0xFF == ord('q'):
break
#realese resources
webcam.release()
cv2.destroyAllWindows()
我也尝试使用 cv2.CAP_PROB_FPS 但这只能有一点帮助,没有多大帮助。