我试图在ubuntu上使用opencv python在网络摄像头中检测脸部。我得到了这个在线代码,并试图运行这个程序,我得到了作为NULL数组指针通过,我想它不能捕捉摄像头的视频,但具有相同的代码(只有捕获相机)我拿到了相机,它捕获了视频。这里是我的代码:return _cv.cvHaarDetectObjects(* args)
import cv
from opencv import highgui
HAAR_CASCADE_PATH = "/home/OpenCV-2.3.1/data/haarcascades/haarcascade_frontalface_default.xml"
CAMERA_INDEX = 0
def detect_faces(image):
faces = []
detected = cv.HaarDetectObjects(image, cascade, storage, 1.2, 2, cv.CV_HAAR_DO_CANNY_PRUNING, (100,100))
if detected:
for (x,y,w,h),n in detected:
faces.append((x,y,w,h))
return faces
if __name__ == "__main__":
cv.NamedWindow("Video", cv.CV_WINDOW_AUTOSIZE)
capture = cv.CaptureFromCAM(0)
storage = cv.CreateMemStorage()
cascade = cv.Load(HAAR_CASCADE_PATH)
print cascade
faces = []
i = 0
c = -1
while (c == -1):
image = cv.QueryFrame(capture)
# Only run the Detection algorithm every 5 frames to improve performance
#if i%5==0:
faces = detect_faces(image)
#print image
for (x,y,w,h) in faces:
cv.Rectangle(image, (x,y), (x+w,y+h), 255)
cv.ShowImage("w1", image)
i += 1
而且我得到的错误是:
Traceback (most recent call last):
File "/home/OpenCV-2.3.1/webcam_try.py", line 38, in <module>
faces = detect_faces(frame)
File "/home/OpenCV-2.3.1/webcam_try.py", line 13, in detect_faces
detected = cv.cvHaarDetectObjects(frame, cascade, storage, 1.2, 2, cv.CV_HAAR_DO_CANNY_PRUNING,(100,100))
File "/usr/lib/pymodules/python2.7/opencv/cv.py", line 1626, in cvHaarDetectObjects
return _cv.cvHaarDetectObjects(*args)
NotImplementedError: Wrong number of arguments for overloaded function 'cvHaarDetectObjects'.
Possible C/C++ prototypes are:
cvHaarDetectObjects_Shadow(CvArr const *,CvHaarClassifierCascade *,CvMemStorage *,double,int,int,CvSize)
cvHaarDetectObjects_Shadow(CvArr const *,CvHaarClassifierCascade *,CvMemStorage *,double,int,int)
cvHaarDetectObjects_Shadow(CvArr const *,CvHaarClassifierCascade *,CvMemStorage *,double,int)
cvHaarDetectObjects_Shadow(CvArr const *,CvHaarClassifierCascade *,CvMemStorage *,double)
cvHaarDetectObjects_Shadow(CvArr const *,CvHaarClassifierCascade *,CvMemStorage *)
非常感谢,它不适用于我的系统。错误如下:函数cvGetMat中无法识别或不支持的数组类型。在安装opencv2.4.3之前,我想知道,它是否适用于Ubuntu 11.10系统和Python 2.7。因为我在使用opencv2.3.1时遇到了很多问题,所以只想确认一下。谢谢。 – shreya
嗨,我已经升级到Opencv-2.4.3。运行代码后,它给我一个错误,如下所示:Traceback(最近一次调用最后一次): 文件“/home/vidula/OpenCV-2.3.1/draft_1.py”,第25行,在 flags = cv。 CV_HAAR_DO_CANNY_PRUNING) 错误:/home/vidula/OpenCV-2.4.3/modules/core/src/array.cpp:2482:error:(-206)函数cvGetMat中无法识别或不支持的数组类型这是什么意思? –
shreya
这意味着你传递给imshow()的数组有问题。在阅读我对您的其他问题的回答后再试一次。 –