• 免费好用的星瞳AI云服务上线!简单标注,云端训练,支持OpenMV H7和OpenMV H7 Plus。可以替代edge impulse。 https://forum.singtown.com/topic/9519
  • 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。
  • 如果有产品硬件故障问题,比如无法开机,论坛很难解决。可以直接找售后维修
  • 发帖子之前,请确认看过所有的视频教程,https://singtown.com/learn/ 和所有的上手教程http://book.openmv.cc/
  • 每一个新的提问,单独发一个新帖子
  • 帖子需要目的,你要做什么?
  • 如果涉及代码,需要报错提示全部代码文本,请注意不要贴代码图片
  • 必看:玩转星瞳论坛了解一下图片上传,代码格式等问题。
  • openmvh7plus无法使用条码检测示例



    • # Barcode Example
      #
      # This example shows off how easy it is to detect bar codes using the
      # OpenMV Cam M7. Barcode detection does not work on the M4 Camera.
      
      import sensor, image, time, math
      
      sensor.reset()
      sensor.set_pixformat(sensor.GRAYSCALE)
      sensor.set_framesize(sensor.VGA) # High Res!
      sensor.set_windowing((640, 80)) # V Res of 80 == less work (40 for 2X the speed).
      sensor.skip_frames(time = 2000)
      sensor.set_auto_gain(False)  # must turn this off to prevent image washout...
      sensor.set_auto_whitebal(False)  # must turn this off to prevent image washout...
      clock = time.clock()
      
      # Barcode detection can run at the full 640x480 resolution of your OpenMV Cam's
      # OV7725 camera module. Barcode detection will also work in RGB565 mode but at
      # a lower resolution. That said, barcode detection requires a higher resolution
      # to work well so it should always be run at 640x480 in grayscale...
      
      def barcode_name(code):
          if(code.type() == image.EAN2):
              return "EAN2"
          if(code.type() == image.EAN5):
              return "EAN5"
          if(code.type() == image.EAN8):
              return "EAN8"
          if(code.type() == image.UPCE):
              return "UPCE"
          if(code.type() == image.ISBN10):
              return "ISBN10"
          if(code.type() == image.UPCA):
              return "UPCA"
          if(code.type() == image.EAN13):
              return "EAN13"
          if(code.type() == image.ISBN13):
              return "ISBN13"
          if(code.type() == image.I25):
              return "I25"
          if(code.type() == image.DATABAR):
              return "DATABAR"
          if(code.type() == image.DATABAR_EXP):
              return "DATABAR_EXP"
          if(code.type() == image.CODABAR):
              return "CODABAR"
          if(code.type() == image.CODE39):
              return "CODE39"
          if(code.type() == image.PDF417):
              return "PDF417"
          if(code.type() == image.CODE93):
              return "CODE93"
          if(code.type() == image.CODE128):
              return "CODE128"
      
      while(True):
          clock.tick()
          img = sensor.snapshot()
          codes = img.find_barcodes()
          for code in codes:
              img.draw_rectangle(code.rect())
              print_args = (barcode_name(code), code.payload(), (180 * code.rotation()) / math.pi, code.quality(), clock.fps())
              print("Barcode %s, Payload \"%s\", rotation %f (degrees), quality %d, FPS %f" % print_args)
          if not codes:
              print("FPS %f" % clock.fps())
      
      

      0_1618391455018_793ec61a63b348e712bd4348b05e67e.png



    • 你是用的是哪个版本的固件,我用3.9.4没问题。



    • 0_1618448517561_d5a083c0-af20-47f9-8c77-5f6f211a2550-image.png
      是传感器的问题吗





    • sensor.set_auto_gain(False)
      sensor.set_auto_whitebal(False)

      把这两行注释掉。



    • @kidswong999 已解决 谢谢