• 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。
  • பLMemoryError:内存分配失败,分配7250字节



    • # Template Matching Example - Normalized Cross Correlation (NCC)
      #
      # This example shows off how to use the NCC feature of your OpenMV Cam to match
      # image patches to parts of an image... expect for extremely controlled enviorments
      # NCC is not all to useful.
      #
      # WARNING: NCC supports needs to be reworked! As of right now this feature needs
      # a lot of work to be made into somethin useful. This script will reamin to show
      # that the functionality exists, but, in its current state is inadequate.
      
      import time, sensor, image
      from image import SEARCH_EX, SEARCH_DS
      #从imgae模块引入SEARCH_EX和SEARCH_DS。使用from import仅仅引入SEARCH_EX, 
      #SEARCH_DS两个需要的部分,而不把image模块全部引入。
      
      # Reset sensor
      sensor.reset()
      
      # Set sensor settings
      sensor.set_contrast(1)
      sensor.set_gainceiling(16)
      # Max resolution for template matching with SEARCH_EX is QQVGA
      sensor.set_framesize(sensor.QQVGA)
      # You can set windowing to reduce the search image.
      #sensor.set_windowing(((640-80)//2, (480-60)//2, 80, 60))
      sensor.set_pixformat(sensor.GRAYSCALE)
      
      # Load template.
      # Template should be a small (eg. 32x32 pixels) grayscale image.
      template01 = image.Image("/1.pgm")
      template02 = image.Image("/2.pgm")
      template03 = image.Image("/3.pgm")
      template04 = image.Image("/4.pgm")
      template05 = image.Image("/5.pgm")
      template06 = image.Image("/6.pgm")
      template07 = image.Image("/7.pgm")
      template08 = image.Image("/8.pgm")
      
      template3L = image.Image("/3L.pgm")
      template3LL = image.Image("/3LL.pgm")
      template3R = image.Image("/3R.pgm")
      template3RR = image.Image("/3RR.pgm")
      
      template4L = image.Image("/4L.pgm")
      template4LL = image.Image("/4LL.pgm")
      template4R = image.Image("/4R.pgm")
      template4RR = image.Image("/4RR.pgm")
      
      template5L = image.Image("/5L.pgm")
      template5LL = image.Image("/5LL.pgm")
      template5R = image.Image("/5R.pgm")
      template5RR = image.Image("/5RR.pgm")
      
      template6L = image.Image("/6L.pgm")
      template6LL = image.Image("/6LL.pgm")
      template6R = image.Image("/6R.pgm")
      template6RR = image.Image("/6RR.pgm")
      
      template7L = image.Image("/7L.pgm")
      template7LL = image.Image("/7LL.pgm")
      template7R = image.Image("/7R.pgm")
      template7RR = image.Image("/7RR.pgm")
      
      template8L = image.Image("/8L.pgm")
      template8LL = image.Image("/8LL.pgm")
      template8R = image.Image("/8R.pgm")
      template8RR = image.Image("/8RR.pgm")
      #加载模板图片
      uart = pyb.UART(3, 9600, timeout_char = 1000)     #定义串口3变量
      blue_led = LED(3)
      
      
      #通过接收stm32F103传过来数据,来决定使用以下哪种模式
      # FindTask:    1.轮询1~8,直至识别到。  2.根据f103给的值,单纯识别那个数
      Find_Task = 1
      Target_Num = 0
      
      find_flag = 0
      x = 0
      blue_led  = LED(3)
      data = [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
      
      ########串口接收数据函数处理#########
      def UartReceiveDate():  #这个函数不能运行太快,否则会导致串口读取太快导致出错
          global Find_Task
          global Target_Num
          global x
          global data
          data[0] = uart.readchar()
          data[1] = uart.readchar()
          data[2] = uart.readchar()
          data[3] = uart.readchar()
          data[4] = uart.readchar()
          data[5] = uart.readchar()
          data[6] = uart.readchar()
          data[7] = uart.readchar()
      
      
          if data[x] == 42 and data[x+3] == 38 and x < 5:
              Find_Task =  data[x+1]
              Target_Num = data[x+2]
              Find_Task =  Find_Task - 48
              Target_Num = Target_Num - 48
              print(Find_Task, Target_Num)
              x = 0
          elif x >= 5: x = 0
          x+=1
          blue_led.toggle
      
      
      
      ########串口接收数据函数处理完毕#############
      
      
      # 当被调用时,我们将返回timer对象
      # 注意:在回调中不允许分配内存的函数  #openmv会自动把接收到的数据放在缓冲区里
      '''def tick(timer):
          blue_led.toggle()
      
      
      tim = Timer(2, freq=5)      # 使用定时器2创建定时器对象-以1Hz触发
      tim.callback(tick) '''         # 将回调设置为tick函数
      
      #最初加载匹配
      def FirstFindTemplate(template):
          R = img.find_template(template, 0.5, step=4, roi=(26, 7, 124, 96), search=SEARCH_EX)   #只检测中间的
          return R
      
      def FirstFindedNum(R, Finded_Num):     #第一个参数是模板匹配的对象,第二个是它所代表的数字
         global Find_Task
         global find_flag
         img.draw_rectangle(R, color=(225, 0, 0))
      
         #本来中值是80的,但返回值是框边缘,所以减去15就好  小于65是在左边,大于65是在右边
         LoR = 0
         find_flag = 1
         Num = Finded_Num
         FH = bytearray(0x2C,0x12,Num, LoR, find_flag, Find_Task,0x5B)
         uart.write(FH)
         print("目标病房号:", Num)
      
      
      
      ######  FindTask == 1 时使用
      #模板匹配
      def FindTemplate(template):
          R = img.find_template(template, 0.5, step=1, roi=(39, 32, 92, ), search=SEARCH_EX)
          return R
      
      def FindedNum(R, Finded_Num):     #第一个参数是模板匹配的对象,第二个是它所代表的数字
         global Find_Task
         global find_flag
         img.draw_rectangle(R, color=(225, 0, 0))
      
         #本来中值是80的,但返回值是框边缘,所以减去15就好  小于65是在左边,大于65是在右边
         if R[0] >= 65:
             LoR = 2    #2是右
         elif 0< R[0] <65:
             LoR = 1     #1是左
         find_flag = 1
         Num = Finded_Num
         FH = bytearray([0x2C,0x12,Num, LoR, find_flag, Find_Task,0x5B])
         uart.write(FH)
         print("识别到的数字是:", Num, "此数字所在方位:", LoR) #打印模板名字
      
      
      clock = time.clock()
      # Run template matching
      while (True):
          clock.tick()
          img = sensor.snapshot()
      
          UartReceiveDate()
      
      
          # find_template(template, threshold, [roi, step, search])
          # ROI: The region of interest tuple (x, y, w, h).
          # Step: The loop step used (y+=step, x+=step) use a bigger step to make it faster.
          # Search is either image.SEARCH_EX for exhaustive search or image.SEARCH_DS for diamond search
          #
          # Note1: ROI has to be smaller than the image and bigger than the template.
          # Note2: In diamond search, step and ROI are both ignored.
      
          if Find_Task == 1:
      
             #进行模板匹配
              r01 = FirstFindTemplate(template01)
              r02 = FirstFindTemplate(template02)
              r03 = FirstFindTemplate(template03)
              r04 = FirstFindTemplate(template04)
              r05 = FirstFindTemplate(template05)
              r06 = FirstFindTemplate(template06)
              r07 = FirstFindTemplate(template07)
              r08 = FirstFindTemplate(template08)
      
      
              #判断哪个模板匹配成功,并将成功匹配的相应数据发送给主控
              if r01:
                   FirstFindedNum(r01, 1)
              elif r02:
                   FirstFindedNum(r02,2)
              elif r03:
                   FirstFindedNum(r03,3)
              elif r04:
                   FirstFindedNum(r04,4)
              elif r05:
                   FirstFindedNum(r05,5)
              elif r06:
                   FirstFindedNum(r06,6)
              elif r07:
                   FirstFindedNum(r07,7)
              elif r08:
                   FirstFindedNum(r08,8)
              else:
                   FH = bytearray([0x2C,0x12,0x00, 0x00, 0x00, 0x00,0x5B])
                   uart.write(FH)
      
      
      
          elif Find_Task == 2:
      
              #判断需要数字3~8中断哪一个
      
              if Target_Num == 3:
                  #进行模板匹配  //这里每个数字至少给3个模板, 但给五六个其实也行
                  r3L = FindTemplate(template3L)
                  r3LL = FindTemplate(template3LL)
                  r3R = FindTemplate(template3R)
                  r3RR = FindTemplate(template3RR)
      
                  #判断哪个模板匹配成功,并将成功匹配的相应数据发送给主控
      
                  if r3L:
                      FindedNum(r3L, 3)
                  elif r3LL:
                      FindedNum(r3LL, 3)
                  elif r3R:
                      FindedNum(r3R, 3)
                  elif r3RR:
                      FindedNum(r3RR, 3)
                  else:
                      FH = bytearray([0x2C,0x12, 0x00, 0x00, find_flag, Find_Task,0x5B])
                      uart.write(FH)
      
              elif Target_Num == 4:
                  #进行模板匹配  //这里每个数字至少给3个模板, 但给五六个其实也行
                  r4L = FindTemplate(template4L)
                  r4LL = FindTemplate(template4LL)
                  r4R = FindTemplate(template4R)
                  r4RR = FindTemplate(template4RR)
      
                  #判断哪个模板匹配成功,并将成功匹配的相应数据发送给主控
      
                  if r4L:
                      FindedNum(r4L, 4)
                  elif r4LL:
                      FindedNum(r4LL, 4)
                  elif r4R:
                      FindedNum(r4R, 4)
                  elif r4RR:
                      FindedNum(r4RR, 4)
                  else:
                      FH = bytearray([0x2C,0x12, 0x00, 0x00, find_flag, Find_Task,0x5B])
                      uart.write(FH)
      
              elif Target_Num == 5:
                  #进行模板匹配  //这里每个数字至少给3个模板, 但给五六个其实也行
      
                  r5L = FindTemplate(template5L)
                  r5LL = FindTemplate(template5LL)
                  r5R = FindTemplate(template5R)
                  r5RR = FindTemplate(template5RR)
      
                  #判断哪个模板匹配成功,并将成功匹配的相应数据发送给主控
      
                  if r5L:
                      FindedNum(r5L, 5)
                  elif r5LL:
                      FindedNum(r5LL, 5)
                  elif r5R:
                      FindedNum(r5R, 5)
                  elif r5RR:
                      FindedNum(r5RR, 5)
                  else:
                      FH = bytearray([0x2C,0x12, 0x00, 0x00, find_flag, Find_Task,0x5B])
                      uart.write(FH)
      
              elif Target_Num == 6:
                  #进行模板匹配  //这里每个数字至少给3个模板, 但给五六个其实也行
      
                  r6L = FindTemplate(template6L)
                  r6LL = FindTemplate(template6LL)
                  r6R = FindTemplate(template6R)
                  r6RR = FindTemplate(template6RR)
      
                  #判断哪个模板匹配成功,并将成功匹配的相应数据发送给主控
      
                  if r6L:
                      FindedNum(r6L, 6)
                  elif r6LL:
                      FindedNum(r6LL, 6)
                  elif r6R:
                      FindedNum(r6R, 6)
                  elif r6RR:
                      FindedNum(r6RR, 6)
                  else:
                      FH = bytearray([0x2C,0x12, 0x00, 0x00, find_flag, Find_Task,0x5B])
                      uart.write(FH)
      
      
              elif Target_Num == 7:
                  #进行模板匹配  //这里每个数字至少给3个模板, 但给五六个其实也行
      
                  r7L = FindTemplate(template7L)
                  r7LL = FindTemplate(template7LL)
                  r7R = FindTemplate(template7R)
                  r7RR = FindTemplate(template7RR)
      
                  #判断哪个模板匹配成功,并将成功匹配的相应数据发送给主控
                  if r7L:
                      FindedNum(r7L, 7)
                  elif r7LL:
                      FindedNum(r7LL, 7)
                  elif r7R:
                      FindedNum(r7R, 7)
                  elif r7RR:
                      FindedNum(r7RR, 7)
                  else:
                      FH = bytearray([0x2C,0x12, 0x00, 0x00, find_flag, Find_Task,0x5B])
                      uart.write(FH)
      
              elif Target_Num == 8:
                  #进行模板匹配  //这里每个数字至少给3个模板, 但给五六个其实也行
      
                  r8L = FindTemplate(template8L)
                  r8LL = FindTemplate(template8LL)
                  r8R = FindTemplate(template8R)
                  r8RR = FindTemplate(template8RR)
      
                  #判断哪个模板匹配成功,并将成功匹配的相应数据发送给主控
      
                  if r8L:
                      FindedNum(r8L, 8)
                  elif r8LL:
                      FindedNum(r8LL, 8)
                  elif r8R:
                      FindedNum(r8R, 8)
                  elif r8RR:
                      FindedNum(r8RR, 8)
                  else:
                      FH = bytearray([0x2C,0x12, 0x00, 0x00, find_flag, Find_Task,0x5B])
                      uart.write(FH)
      
              #else: time.sleep_ms(100)
          else: time.sleep_ms(100)
      
          print(clock.fps(),Find_Task, Target_Num)
      
      
      


    • https://book.openmv.cc/image/mulity-template-match.html

      不要一开始就把所有模板导入,内存消耗太大了。

      解决办法:参考这个代码,https://book.openmv.cc/image/mulity-template-match.html