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  • 我们只解决官方正版的OpenMV的问题(STM32),其他的分支有很多兼容问题,我们无法解决。
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  • openmv在识别颜色后无法拍照并保存在sd卡中



    • 
      import sensor, image, time,pyb
      
      yellow_threshold   =(0, 100, -128, 127, 47, 21)
      
      RED_LED_PIN = 1
      BLUE_LED_PIN = 3
      
      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.
      
      #红灯亮
      pyb.LED(RED_LED_PIN).on()
      sensor.skip_frames(30) # Give the user time to get ready.
      
      #红灯灭,蓝灯亮
      pyb.LED(RED_LED_PIN).off()
      pyb.LED(BLUE_LED_PIN).on()
      
      
      sensor.set_auto_whitebal(False) # turn this off.
      
      #关闭白平衡。白平衡是默认开启的,在颜色识别中,需要关闭白平衡。
      
      clock = time.clock() # Tracks FPS.
      
      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 blobs:
      
          #如果找到了目标颜色
      
              for b in blobs:
      
              #迭代找到的目标颜色区域
      
                  # Draw a rect around the blob.
      
                  img.draw_rectangle(b[0:4]) # rect
      
                  #用矩形标记出目标颜色区域
      
                  img.draw_cross(b[5], b[6]) # cx, cy
      
                  #在目标颜色区域的中心画十字形标记
      
                  print(b[5], b[6])
                  
                  print("You're on camera!")
                  
                  sensor.snapshot().save("example.jpg") # or "example.bmp" (or others)
      
                  pyb.LED(BLUE_LED_PIN).off()
                  
                  print("Done! Reset the camera to see the saved image.")
      
      
      
          print(clock.fps()) # Note: Your OpenMV Cam runs about half as fast while
      
          # connected to your computer. The FPS should increase once disconnected.
      
      


    • SD卡需要是FAT格式。最好买贵的,品牌的。