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python - 如何使用 C 库刷新 Python 程序中的内存?

转载 作者:可可西里 更新时间:2023-11-01 10:00:44 32 4
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Python 程序的功能是使用网络摄像头找到最亮的光线,并将 X、Y 坐标发送到 arduino 程序。这是用相机跟随太阳。

问题是内存增加直到程序卡住。我试图在使用后删除所有变量。但它仍然使用太多内存。

操作系统:Windows 7

我怎样才能找到泄漏并阻止它?

这是python代码:

import cv
import traceback
import serial



try:
cv.NamedWindow("CameraFeed", 1)
capture = cv.CaptureFromCAM(0)
cv.NamedWindow("Altered", 1)


except:
cv.DestroyWindow("CameraFeed")
cv.DestroyWindow("Altered")
traceback.print_exc()

ser = serial.Serial("COM15",9600)



def repeat():
imga = cv.QueryFrame(capture)
img = cv.CreateImage(cv.GetSize(imga),8,3)
cv.Smooth(imga, img, cv.CV_BLUR, 3)


thresholded_img = cv.CreateImage(cv.GetSize(img), 8, 1)
del(img)


minv = cv.Scalar(250,250,250, 0)
maxv = cv.Scalar(255,255,255, 0)
cv.InRangeS(imga, minv, maxv, thresholded_img)
del(minv)
del(maxv)
#determine the objects moments and check that the area is large
#enough to be our object
moments = cv.Moments(cv.GetMat(thresholded_img,1), 0)
area = cv.GetCentralMoment(moments, 0, 0)

#there can be noise in the video so ignore objects with small areas


if(area > 10000):

#determine the x and y coordinates of the center of the object
#we are tracking by dividing the 1, 0 and 0, 1 moments by the area
x = cv.GetSpatialMoment(moments, 1, 0)/area
y = cv.GetSpatialMoment(moments, 0, 1)/area
del(moments)
del(area)
#print 'x: ' + str(x) + ' y: ' + str(y) + ' area: ' + str(area)

#create an overlay to mark the center of the tracked object
overlay = cv.CreateImage(cv.GetSize(imga), 8, 3)

cv.Circle(imga, (int(x), int(y)), 5, (255, 0, 0), 20)
cv.Add(imga, overlay, imga)
del(overlay)
#add the thresholded image back to the img so we can see what was
#left after it was applied
cv.Merge(thresholded_img, None, None, None, imga)

print 'X: ',x
print 'Y: ',y
print ' '
if x < 300:
print "left"
if x > 340:
print "Right"
if y < 210:
print "Up"
if y > 250:
print "Down"

ser.write('%03i%03i\r\n'% (int(x),int(y)))







else:
ser.write('%03i%03i\r\n'% (320,240))



cv.ShowImage("CameraFeed", thresholded_img)
cv.ShowImage("Altered", imga)
del(imga)
del(thresholded_img)


try:
while True:
repeat()
if cv.WaitKey(10) == 13:
break
except:
cv.DestroyWindow("CameraFeed")
cv.DestroyWindow("Altered")
ser.close()
traceback.print_exc()

cv.DestroyWindow("CameraFeed")
cv.DestroyWindow("Altered")
ser.close()
del(serial)
exit()

最佳答案

这是 GetMat 的已知错误 -> http://code.opencv.org/issues/1579

关于python - 如何使用 C 库刷新 Python 程序中的内存?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10515458/

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