title: AttributeError: 'kivy.properties.ObjectProperty' object has no attribute
body: <p>I try to put texture into Image but get this error. It seems python not able to get this atribute from Image, but it should. Sorry for bad English</p>
  
  <p>this is my kv.py file</p>
  
  <pre><code>import cv2
  import kivy
  import numpy as np
  from kivy.app import App
  from kivy.core.image import Texture
  from kivy.uix.widget import Widget
  from kivy.properties import ObjectProperty
  from kivy.clock import Clock
  from kivy.uix.boxlayout import BoxLayout
  from kivy.uix.gridlayout import GridLayout
  import SliderTest
  
  class Wrapper(BoxLayout):
      def __init__(self, **kwargs):
          super(Wrapper, self).__init__(**kwargs)
          self.cam1 = ObjectProperty(None)
  
  
  class CamMain(App):
      def build(self):
          Clock.schedule_interval(self.update, 1.0 / 33.0)
          self.capture = cv2.VideoCapture(0)
          return Wrapper()
  
      def update(self, dt):
          _, frame = self.capture.read()
          texture = Texture.create(size=(frame.shape[1], frame.shape[0]), colorfmt='bgr')
          result = cv2.flip(frame, 0)
          texture.blit_buffer(result.tostring(), colorfmt='bgr', bufferfmt='ubyte')
          App.get_running_app().root.cam1.texture = texture
  
  
  if __name__ == "__main__":
      CamMain().run()
  </code></pre>
  
  <p>this is my CamMain.kv file</p>
  
  <pre><code>&lt;Wrapper&gt;:
      hue: hue
      saturation: saturation
      value:value
      cam1:cam1
      orientation: 'vertical'
  
      GridLayout:
          cols:2
  
          BoxLayout:
              orientation: 'vertical'
              spacing:20
              padding:25
              Image:
                  id:cam1
                  size: self.texture_size
  </code></pre>
  
  <p>App.get_running_app().root.cam1.texture = texture
  AttributeError: 'kivy.properties.ObjectProperty' object has no attribute 'texture'</p>