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  • 颜色识别测距怎么在方框的旁边显示距离。不是通过串口打印。是直接显示在方框的旁边



    • # Measure the distance
      
      #
      
      
      
      import sensor, image, time
      
      
      
      # For color tracking to work really well you should ideally be in a very, very,
      
      # very, controlled enviroment where the lighting is constant...
      
      yellow_threshold   = (12, 100, 30, 127, -39, 50)
      
      # You may need to tweak the above settings for tracking green things...
      
      # Select an area in the Framebuffer to copy the color settings.
      
      
      
      sensor.reset() # Initialize the camera sensor.
      
      sensor.set_pixformat(sensor.RGB565) # use RGB565.
      
      sensor.set_framesize(sensor.QQVGA) # use QQVGA for speed.
      
      sensor.skip_frames(10) # Let new settings take affect.
      
      sensor.set_auto_whitebal(False) # turn this off.
      
      clock = time.clock() # Tracks FPS.
      
      
      
      K=1310#the value should be measured
      
      
      
      while(True):
      
          clock.tick() # Track elapsed milliseconds between snapshots().
      
          img = sensor.snapshot() # Take a picture and return the image.
      
      
      
          blobs = img.find_blobs([yellow_threshold])
      
          if len(blobs) == 1:
      
              # Draw a rect around the blob.
      
              b = blobs[0]
      
              img.draw_rectangle(b[0:4]) # rect
      
              img.draw_cross(b[5], b[6]) # cx, cy
      
              Lm = (b[2]+b[3])/2
      
              length = K/Lm
      
              print(length)
              print(b[5], b[6])
      




    • 不是输出固定字符,而是想把openmv测到的实时距离显示在边框上。怎么引用距离



    • 把变量转成字符串使用str函数