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  • OSError:Could not find the file



    • # 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
      
      # 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.
      template = image.Image("/1.pgm")
      
      clock = time.clock()
      
      # Run template matching
      while (True):
          clock.tick()
          img = sensor.snapshot()
      
          # 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.
          r = img.find_template(template, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
          if r:
              img.draw_rectangle(r)
      
          print(clock.fps())
      ![1_1636097990285_23.png](https://fcdn.singtown.com/6ff3c945-9c3d-41d0-ad75-5ddd0351aa9a.png) ![0_1636097990282_22.png](https://fcdn.singtown.com/747dc459-e28c-4c7d-a27a-597d79699126.png) 
      




    • This post is deleted!


    • 0_1636098374227_23.png



    • 1,重启OpenMV。
      2,有可能是你的windows把后缀名隐藏了,你以为是1.pgm,但是实际上是1.pgm.pgm



    • @kidswong999 重启后还是同样的效果 后缀名已再三验证过 没有隐藏 符合规格 但依旧还是同样的报错 请问该怎么解决 已经卡了好久这个问题了 有点百思不得其解



    • @5sba 你在OpenMV里调用os.listdir()就能看到文件列表。