title: Why two image (image.reload()) in kivy python?
body: <p>I have kivy projekt and I make one image, but in the display is it 2. Why?
  I want update the image, and just one image display.</p>
  <p>This is my code:</p>
  <p>main.py</p>
  <pre><code>import numpy as np
  import cv2
  from PIL import Image as IMG
  from PIL import ImageDraw, ImageFont
  import random
  
  from kivy.app import App
  from kivy.uix.widget import Widget
  from kivy.uix.floatlayout import FloatLayout
  from kivy.lang import Builder
  from kivy.uix.stacklayout import StackLayout
  from kivy.uix.boxlayout import BoxLayout
  from kivy.uix.image import Image
  from kivy.uix.slider import Slider
  from kivy.uix.switch import Switch
  from kivy.base import EventLoopBase
  from kivy.clock import Clock
  from functools import partial
  from kivy.core.window import Window
  Builder.load_file('kivy.kv')
  
  def fotowrite(message):
      image = IMG.open('blue.jpg')
  
      font = ImageFont.truetype('Roboto.ttf', size=20) 
      draw = ImageDraw.Draw(image)
      #message = &quot;&quot;&quot;    &quot;&quot;&quot; #datat of write
      color = 'rgb(0, 255, 0)' #rgb color
      draw.text((0, 0), message, fill=color, font=font) #erite
      image.save('blue2.jpg') 
  
  
  
  class AlapWidget(StackLayout):
      pass
  
  class GUIApp(App):
      def build (self):
          self.load_kv(&quot;kivy.kv&quot;)
          return AlapWidget()
  
  
  def AppLoop(*args):
      win_ref = Window.get_parent_window().children[0]
      print('AppLoop')
      i=0
      i=random.random()
      fotowrite(&quot;value of i: &quot;+str(i)) #here write to image, and save in HDD
      img = cv2.imread('blue2.jpg',cv2.IMREAD_UNCHANGED) 
      App.get_running_app().root.ids.imgm.reload()   
  val1=None
  Clock.schedule_interval(partial(AppLoop, 'val1'), 1)
  
  GUIApp().run()
  </code></pre>
  <p>kivy.kv</p>
  <pre><code>&lt;AlapWidget&gt;:
      BoxLayout:                  
          orientation:'vertical'
          size_hint:0.55,0.45
          Image:
              id:imgm
              nocache:True
              source:'blue2.jpg' #load in disk
              size: self.texture_size
              allow_stretch:True
              keep_ratio:1
  </code></pre>
  <p>What is the problem?
  Why just the second reloaded?</p>
  <p>Sorry, I speak a little English, and I'm beginner in GUI.</p>
  <p>Thanks</p>