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這是我第一次嘗試在OpenCV 3.1中檢測臉部和眼睛。這裏是我的代碼:cv.cvtColor(img,cv.COLOR_BGR2GRAY)不起作用
import cv2 as cv
import numpy as np
face_cascade = cv.CascadeClassifier('haarcascade_frontalface_default.xml')
eye_cascade = cv.CascadeClassifier('haarcascade_eye.xml')
cam = cv.VideoCapture(0)
while True:
tf, img = cam.read()
gray = cv.cvtColor(img, cv.COLOR_BGR2GRAY)
faces = face_cascade.detectMultiScale(gray, 1.3, 5)
for (x, y, w, h) in faces:
img = cv.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.detectMultiScalenter code heree(roi_gray)
for (ex, ey, ew, eh) in eyes:
cv.rectangle(roi_color, (ex, ey), (ex + ew, ey + eh), (0, 255, 0), 2)
print(tf)
cv.imshow('my cam', img)
key = cv.waitKey(1)
if key == 27:
break
cam.release()
cv.destroyAllWindows()
而且我得到了這個錯誤:
OpenCV Error: Assertion failed (!empty()) in cv::CascadeClassifier::detectMultiScale, file D:\Build\OpenCV\opencv-3.1.0\modules\objdetect\src\cascadedetect.cpp, line 1639
Traceback (most recent call last):
File "C:/Users/hedon/PycharmProjects/deneme_1.1/ilk.py", line 13, in <module>
faces = face_cascade.detectMultiScale(gray, 1.3, 5)
cv2.error: D:\Build\OpenCV\opencv-3.1.0\modules\objdetect\src\cascadedetect.cpp:1639: error: (-215) !empty() in function cv::CascadeClassifier::detectMultiScale
誰能告訴哪裏是我的錯?我也試過了:
gray = cv.cvtColor(img, cv.COLOR_BAYER_GR2GRAY)
正如PyCharm建議的那樣。同樣的錯誤:
OpenCV Error: Assertion failed (scn == 1 && dcn == 1) in cv::demosaicing, file D:\Build\OpenCV\opencv-3.1.0\modules\imgproc\src\demosaicing.cpp, line 1630
Traceback (most recent call last):
File "C:/Users/hedon/PycharmProjects/deneme_1.1/ilk.py", line 11, in <module>
gray = cv.cvtColor(img, cv.COLOR_BAYER_BG2GRAY)
cv2.error: D:\Build\OpenCV\opencv-3.1.0\modules\imgproc\src\demosaicing.cpp:1630: error: (-215) scn == 1 && dcn == 1 in function cv::demosaicing
請修改您的標題。標題如下所示:「某某不起作用」,是不恰當的標題。它們含糊不清,不能洞察你的問題。在創建標題之前總是試着問自己:**「這是否以清晰簡潔的方式總結了我的問題?」** –
第一個錯誤是因爲您沒有正確加載分類器。檢查xml文件的路徑。第二個錯誤是由於您正在嘗試執行_non-sense_轉換。他們是兩個非常不同的錯誤,而**不是**「相同的錯誤」! – Miki
@Miki Ooops,我只是困惑。他們是完全不同的錯誤。謝謝。我使用.py文件將xml文件複製到相同的文件夾中。不好嗎? – Burak