python类camera()的实例源码

def init_cams(self, which_cam_idx):

        # gets a list of available cameras.
        self.clist = pygame.camera.list_cameras()
        print (self.clist)

        if not self.clist:
            raise ValueError("Sorry, no cameras detected.")

        try:
            cam_id = self.clist[which_cam_idx]
        except IndexError:
            cam_id = self.clist[0]

        # creates the camera of the specified size and in RGB colorspace
        self.camera = pygame.camera.Camera(cam_id, self.size, "RGB")

        # starts the camera
        self.camera.start()

        self.clock = pygame.time.Clock()

        # create a surface to capture to.  for performance purposes, you want the
        # bit depth to be the same as that of the display surface.
        self.snapshot = pygame.surface.Surface(self.size, 0, self.display)

def get_and_flip(self):
        # if you don't want to tie the framerate to the camera, you can check and
        # see if the camera has an image ready.  note that while this works
        # on most cameras, some will never return true.
        if 0 and self.camera.query_image():
            # capture an image

            self.snapshot = self.camera.get_image(self.snapshot)

        if 0:
            self.snapshot = self.camera.get_image(self.snapshot)
            #self.snapshot = self.camera.get_image()

            # blit it to the display surface.  simple!
            self.display.blit(self.snapshot, (0,0))
        else:
            self.snapshot = self.camera.get_image(self.display)
            #self.display.blit(self.snapshot, (0,0))


        pygame.display.flip()

def main():
  while True:
    try:
      print ('Saving image from camera...')
      start_time_camera = time.time()

      img = cam.get_image()
      pygame.image.save(img, image_path)

      end_time_camera =time.time()
      time_dif_camera = end_time_camera - start_time_camera

      # Print the time-usage.
      os.system('cls' if os.name == 'nt' else 'clear')
      print ('###### time usage camera ######')
      print(str(timedelta(seconds=int(round(time_dif_camera)))))
    except (KeyboardInterrupt, SystemExit, RuntimeError, SystemError):
      cam.stop()

def __init__(self, resolution=(120, 160), framerate=20):
        from picamera.array import PiRGBArray
        from picamera import PiCamera
        resolution = (resolution[1], resolution[0])
        # initialize the camera and stream
        self.camera = PiCamera() #PiCamera gets resolution (height, width)
        self.camera.resolution = resolution
        self.camera.framerate = framerate
        self.rawCapture = PiRGBArray(self.camera, size=resolution)
        self.stream = self.camera.capture_continuous(self.rawCapture,
            format="rgb", use_video_port=True)

        # initialize the frame and the variable used to indicate
        # if the thread should be stopped
        self.frame = None
        self.on = True

        print('PiCamera loaded.. .warming camera')
        time.sleep(2)

def __init__(self, resolution = (160, 120), framerate = 20):
        import pygame
        import pygame.camera

        super().__init__()

        pygame.init()
        pygame.camera.init()
        l = pygame.camera.list_cameras()
        self.cam = pygame.camera.Camera(l[0], resolution, "RGB")
        self.resolution = resolution
        self.cam.start()
        self.framerate = framerate

        # initialize variable used to indicate
        # if the thread should be stopped
        self.frame = None
        self.on = True

        print('WebcamVideoStream loaded.. .warming camera')

        time.sleep(2)

def __init__(self, **argd):
       self.__dict__.update(**argd)
       super(VideoCapturePlayer, self).__init__(**argd)

       # create a display surface. standard pygame stuff
       self.display = pygame.display.set_mode( self.size, 0 )

       # gets a list of available cameras.
       self.clist = pygame.camera.list_cameras()
       if not self.clist:
           raise ValueError("Sorry, no cameras detected.")

       # creates the camera of the specified size and in RGB colorspace
       self.camera = pygame.camera.Camera(self.clist[0], self.size, "RGB")

       # starts the camera
       self.camera.start()

       self.clock = pygame.time.Clock()

       # create a surface to capture to.  for performance purposes, you want the
       # bit depth to be the same as that of the display surface.
       self.snapshot = pygame.surface.Surface(self.size, 0, self.display)

def oneSave(angleStep): #=angle
 global sMat, bb, fp 
 rr=0
 #x=startx #camera picture X
 y=sTop   #camera picture Y
 #---export xyz--- to filename.xyz 
 y=sTop+1   
 while y<height-sBott:       
    xx = sMat[y-sTop][angleStep]
    if xx!=0 and xx>-200:         
      angle=float(2*pi/(loop-1)*angleStep)
      rx=float(math.sin(angle)*xx*nasDef)
      ry=float(math.cos(angle)*xx*nasDef)
      rz = y
      co = str(rx)+" "+str(ry)+" "+str(rz)
      #cop = str(angle)+" > "+str(xx)+" > "+co
      #print cop
      fp.write(co+"\n") 
    y=y+kroky
 #time.sleep(0.2)

def main():
    pygame.init()
    pygame.camera.init()
    VideoCapturePlayer().main()
    pygame.quit()

def shutdown(self):
        # indicate that the thread should be stopped
        self.on = False
        print('stoping PiCamera')
        time.sleep(.5)
        self.stream.close()
        self.rawCapture.close()
        self.camera.close()

def get_and_flip(self):
       # if you don't want to tie the framerate to the camera, you can check and
       # see if the camera has an image ready.  note that while this works
       # on most cameras, some will never return true.
       if 0 and self.camera.query_image():
           # capture an image

           self.snapshot = self.camera.get_image(self.snapshot)
       self.snapshot = self.camera.get_image(self.snapshot)
       #self.snapshot = self.camera.get_image()

       # blit it to the display surface.  simple!
       self.display.blit(self.snapshot, (0,0))
       pygame.display.flip()

def main():
    pygame.init()
    pygame.camera.init()
    VideoCapturePlayer().main()
    pygame.quit()

def info(self):
        return [self.NAME,
                "Collecting data from camera"]

def __init__(self, chunk_size=239):
        pygame.camera.init()
        available_cameras = pygame.camera.list_cameras()
        if not available_cameras:
            raise Exception("No camera available")
        self.cam = pygame.camera.Camera(available_cameras[0])
        self.last_raw = None
        self.last_time = None
        self.chunk_size = chunk_size

        super().__init__(None)

def main():

  # Load the Inception model so it is ready for classifying images.
  try:
    model = inception.Inception()
  except FileNotFoundError:
    print ('###### warning ######')
    print ('this script requires inception.maybe_download() executed at least once, running it now')
    inception.maybe_download()
    model = inception.Inception()
  while True:
    try:
      start_time_camera = time.time()

      cam.start() 
      # start and stop prevent the buffer from filling up with more useless frames
      img = cam.get_image()
      cam.stop()
      image = pygame.surfarray.array3d(img)
      image = np.rot90(image, 3)
      end_time_camera = time.time()

      start_time = time.time()
      print ("Classifying image from camera...")
      with warnings.catch_warnings():
        warnings.simplefilter("ignore")
        classify(model=model, image=image)
      end_time = time.time()
      time_dif_camera = end_time_camera - start_time_camera
      time_dif = end_time - start_time

      # Print the time-usage.
      print ('###### time usage camera ######')
      print(str(timedelta(seconds=int(round(time_dif_camera)))))
      print ('###### time usage NN ######')
      print(str(timedelta(seconds=int(round(time_dif)))))

      # Save the image that was just classified (for debug)
      im = Image.fromarray(image) 
      im.save(image_path)
    except (KeyboardInterrupt, SystemExit, RuntimeError, SystemError):
      cam.stop()
      model.close()

def main():

  # Load the Inception model so it is ready for classifying images.
  try:
    model = inception.Inception()
  except FileNotFoundError:
    print ('###### warning ######')
    print ('this script requires inception.maybe_download() executed at least once, running it now')
    inception.maybe_download()
    model = inception.Inception()
  while True:
    try:
      start_time_camera = time.time()

      # multiple times to empty the buffer
      img = cam.get_image()
      img = cam.get_image()
      img = cam.get_image()

      image = pygame.surfarray.array3d(img)
      image = np.fliplr(np.rot90(image, 3))

      if debug: 
            # Save the image that was just classified (for debug)
            im = Image.fromarray(image) 
            im.save(image_path)

      end_time_camera = time.time()

      start_time = time.time()
      #print ("Classifying image from camera...")
      with warnings.catch_warnings():
        warnings.simplefilter("ignore")
        classify(model=model, image=image)
      end_time = time.time()
      time_dif_camera = end_time_camera - start_time_camera
      time_dif = end_time - start_time

      # Print the time-usage.
      out_file.write('###### time usage camera ######\n')
      out_file.write(str(timedelta(seconds=int(round(time_dif_camera))))+"\n")
      out_file.write('###### time usage NN ######\n')
      out_file.write(str(timedelta(seconds=int(round(time_dif))))+"\n")
      out_file.flush()
      os.fsync(out_file)
      print('###### time usage camera ######')
      print(str(timedelta(seconds=int(round(time_dif_camera)))))
      print('###### time usage NN ######')
      print(str(timedelta(seconds=int(round(time_dif)))))


    except (KeyboardInterrupt, SystemExit, RuntimeError, SystemError):
      cam.stop()
      model.close()
      out_file.close()