img = detect（img，faceCascade，img_id）TypeError：detect（）缺少1个必需的位置参数：'img_id'

Question

请在此代码中帮助我们...我遇到以下错误请帮我？？？？？文件“ C：\ Users \ HP \ Desktop \ opencvtube \ dsvssvsbsbbbbrsrbsrbsrbrrsv.py”，第39行，在img =检测（img，faceCascade，img_id）TypeError：detect（）缺少1个必需的位置参数：'img_id'

import cv2

def generate_dataset(img, id, img_id):
    cv2.imwrite("data/user."+str(id)+"."+str(img_id)+".jpg", img)

def draw_boundary(img, classifier, scaleFactor, minNeighbors, color, text):
    gray_img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    features = classifier.detectMultiScale(gray_img, scaleFactor, minNeighbors)
    coords = []
    for (x, y, w, h) in features:
        cv2.rectangle(img, (x,y), (x+w, y+h), color, 2)
        cv2.putText(img, text, (x, y-4), cv2.FONT_HERSHEY_SIMPLEX, 0.8, color, 1, cv2.LINE_AA)
        coords = [x, y ,w, h]

    return coords


def detect(img, faceCascade,img_id):
    color = {"blue":(255,0,0), "red":(0,255,0), "green":(0,255,0)}
    coords = draw_boundary(img, faceCascade, 1.1, 10, color['blue'], "Face")

    if len(coords)==4:
        roi_img = img[coords[1]:coords[1]+coords[3], coords[0]:coords[0]+coords[2]]

        user_id = 1
        generate_dataset(roi_img, user_id, img_id)

    return  img

faceCascade = cv2.CascadeClassifier('C:/Users/HP/AppData/Local/Programs/Python/Python37-32/Lib/site-packages/cv2/data/haarcascade_frontalface_default.xml')

video_capture = cv2.VideoCapture(0)


img_id = 0

while True:
    _, img = video_capture.read()
    img = detect(img, faceCascade, img_id)
    cv2.imshow("face detection", img)
    img_id += 1
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

video_capture.release()
cv2.destroyAllWindows()

Answer 1

我复制并粘贴了您的代码，但无法重现该错误。它工作正常。一个需要注意的是级联分类器的文件位置。如果不正确，它将无法执行您的检测功能。