def nextFrame(self):
"""Read the next frame from the capturing device.
Note that the captured image is flipped horisontally."""
current_frame = cv.highgui.cvQueryFrame(self.__capture_device)
if not (current_frame == None):
cv.cvFlip(current_frame, None, 1)
if self.__scale < 1.0:
width = int(current_frame.width * self.__scale + 0.5)
height = int(current_frame.height * self.__scale + 0.5)
current_frame = image_utils.IplResize(current_frame, width,
height)
if not self.__is_color:
current_frame = image_utils.IplRGBToGray(current_frame)
self.__current_frame.setFrame(current_frame)
t = time.time()
diff = t - self.__time_start
if diff > 1:
self.__fps = self.__frame_cnt
self.__frame_cnt = 0
self.__time_start = t
else:
self.__frame_cnt += 1
return self.currentFrame()
def Ipl2Pil(i_image):
o_flipped_image = cv.cvCreateImage(
cv.cvSize(i_image.width, i_image.height), i_image.depth,
i_image.nChannels)
cv.cvFlip(i_image, o_flipped_image)
o_pil_image = cv.adaptors.Ipl2Pil(o_flipped_image)
return o_pil_image
def __init__(self, src="", time=None, flipped=False, thresh=128, thmode=0):
self.src = src
self.time = time
self.bthresh = thresh
self.bthreshmode = thmode
if self.time:
hg.cvSetCaptureProperty(self.src, hg.CV_CAP_PROP_POS_FRAMES, self.time)
self.iplimage = hg.cvQueryFrame(self.src)
if flipped:
opencv.cvFlip(self.iplimage, None, 1)
self.width = self.iplimage.width
self.height = self.iplimage.height
def __init__(self, src="", time=None, flipped=False, thresh=128, thmode=0):
self.src = src
self.time = time
self.bthresh = thresh
self.bthreshmode = thmode
if self.time:
hg.cvSetCaptureProperty(self.src, hg.CV_CAP_PROP_POS_FRAMES, self.time)
self.iplimage = hg.cvQueryFrame(self.src)
if flipped:
opencv.cvFlip (self.iplimage, None, 1)
self.width = self.iplimage.width
self.height = self.iplimage.height
def Ipl2Pil(i_image):
o_flipped_image = cv.cvCreateImage( cv.cvSize( i_image.width, i_image.height ) , i_image.depth, i_image.nChannels )
cv.cvFlip( i_image, o_flipped_image )
o_pil_image = cv.adaptors.Ipl2Pil( o_flipped_image )
return o_pil_image
