Python眨眼識別是指利用Python編程語言來實現(xiàn)眨眼的檢測與識別。眨眼識別技術(shù)在人機交互、虛擬現(xiàn)實、智能安防等領(lǐng)域都有廣泛的應(yīng)用。下面我們來介紹Python眨眼識別的實現(xiàn)。
import cv2 cap = cv2.VideoCapture(0) face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml') eye_cascade = cv2.CascadeClassifier('haarcascade_eye.xml') while True: ret, img = cap.read() gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) # 將圖像轉(zhuǎn)灰度 faces = face_cascade.detectMultiScale(gray, 1.3, 5) # 檢測人臉 for (x,y,w,h) in faces: cv2.rectangle(img,(x,y),(x+w,y+h),(255,0,0),2) roi_gray = gray[y:y+h, x:x+w] roi_color = img[y:y+h, x:x+w] eyes = eye_cascade.detectMultiScale(roi_gray) for (ex,ey,ew,eh) in eyes: # 眼睛檢測 cv2.rectangle(roi_color,(ex,ey),(ex+ew,ey+eh),(0,255,0),2) # 眨眼檢測 eye = roi_gray[ey:ey+eh, ex:ex+ew] _, eye = cv2.threshold(eye, 30, 255, cv2.THRESH_BINARY) eye = cv2.resize(eye, (24, 12)) score = sum(sum(eye))/float(24*12) if score< 50: print('眨眼!') cv2.imshow('img', img) if cv2.waitKey(1) & 0xFF == ord('q'): break cap.release() cv2.destroyAllWindows()
代碼中,首先我們導入了OpenCV庫,在實時攝像頭視頻流中檢測人臉和眼睛。在檢測到眼睛后,我們通過灰度處理、二值化等方式得到眼睛圖像,計算眼睛圖像的得分,判斷是否眨眼。如果得分小于一個設(shè)定值,就判定為眨眼。
Python眨眼識別是一種簡單、易學的圖像識別技術(shù)。希望本文能夠為大家?guī)韼椭?/p>