• OpenMV VSCode 扩展发布了,在插件市场直接搜索OpenMV就可以安装
  • 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。
  • openmv可以正常识别但lcd屏显示卡顿半天才出一个画面,想问一下是什么情况



    • import sensor, image, time, lcd
      import json
      from pyb import UART
      green_threshold   = (41, 66, -61, -27, 8, 43)
      red_threshold   = (41, 61, 42, 127, -128, 127)
      yellow_threshold   = ( 60 ,10,-15,20,30,80)
      sensor.set_hmirror(True)
      sensor.set_vflip(True)
      sensor.reset()
      sensor.set_pixformat(sensor.RGB565)
      sensor.set_framesize(sensor.QQVGA2)
      sensor.skip_frames(10)
      sensor.set_auto_whitebal(False)
      
      clock = time.clock()
      lcd.init() # Initialize the lcd screen.
      
      uart = UART(3, 9600)
      def find_max(blobs):
          max_size=0
          for blob in blobs:
             if blob.pixels() > max_size:
                  max_blob=blob
                  max_size = blob.pixels()
          return max_blob
      while(True):
      
          
          clock.tick()
          
      
          img = sensor.snapshot()
          blobs0 = img.find_blobs([green_threshold])
          blobs1 = img.find_blobs([red_threshold])
          blobs2 = img.find_blobs([yellow_threshold])
          if blobs0:
           max_blob=find_max(blobs0)
           img.draw_rectangle(max_blob.rect())
           img.draw_cross(max_blob.cx(), max_blob.cy())
           img.draw_string(100,100, 'x=' + str(blobs0.cx()), color=(0,0,0))
           img.draw_string(100,120, 'y=' + str(blobs0.cy()), color=(0,0,0))
           lcd.display(img) # Take a picture and display the image.
         
           data="0"
           data_out = json.dumps(set(data))
           uart.write(data_out +'\n')
           print('you send:',data_out)
          elif blobs1:
           max_blob=find_max(blobs1)
           img.draw_rectangle(max_blob.rect())
           img.draw_cross(max_blob.cx(), max_blob.cy())
           data="1"
           data_out = json.dumps(set(data))
           uart.write(data_out +'\n')
           print('you send:',data_out)
          elif blobs2:
           max_blob=find_max(blobs2)
           img.draw_rectangle(max_blob.rect())
           img.draw_cross(max_blob.cx(), max_blob.cy())
           data="2"
           data_out = json.dumps(set(data))
           uart.write(data_out +'\n')
           print('you send:',data_out)
          else:
              print('not found','4')
      


    • 原因:你的代码的逻辑是当36行的判断是真,然后才显示lcd。

      解决办法:把42行的lcd.display(img)放到最下面