def rotate(im, angle):
center = (im.width / 2.0, im.height / 2.0)
mat = cv.CreateMat(2, 3, cv.CV_32FC1)
cv.GetRotationMatrix2D(center, angle, 1.0, mat)
out = cv.CreateImage(cv.GetSize(im), cv.IPL_DEPTH_8U, 1)
cv.WarpAffine(im, out, mat, fillval=255)
return out
def img(self):
'''return a cv image for the icon'''
SlipThumbnail.img(self)
if self.rotation:
# rotate the image
mat = cv.CreateMat(2, 3, cv.CV_32FC1)
cv.GetRotationMatrix2D((self.width / 2, self.height / 2),
-self.rotation, 1.0, mat)
self._rotated = cv.CloneImage(self._img)
cv.WarpAffine(self._img, self._rotated, mat)
else:
self._rotated = self._img
return self._rotated
import cv2.cv as cv
import time
cv.NamedWindow("camera", 1)
capture = cv.CaptureFromCAM(0)
#set solution of camera
cv.SetCaptureProperty(capture, 3, 400)
cv.SetCaptureProperty(capture, 4, 300)
while True:
img = cv.QueryFrame(capture)
#smooth
cv.Smooth(img, img, cv.CV_BLUR, 3)
#hue_img = cv.CreateImage(cv.GetSize(img), 8 , 3)
rows, cols = cv.GetSize(img)
tmp_image = cv.fromarray(img)
rotate_img = cv.GetRotationMatrix2D((cols / 2, rows / 2), 90, 1, tmp_image)
#rotate_img = CV.warpAffine(,tmp_img, (cols,rows))
#cv.CvtColor(img, hue_img, cv.CV_BGR2HSV)
#threshold_img = cv.CreateImage(cv.GetSize(hue_img), 8 ,1)
#cv.InRangeS(hue_img, (38,120,60), (75,255,255), threshold_img)
cv.ShowImage("camera_origin", img)
cv.ShowImage("Threshold", rotate_img)
#as put ESC end the program
if cv.WaitKey(10) == 27:
break
cv.DestroyAllWindows()