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openmv可以先进行数字识别，识别出来后储存起来，然后过一段时间进行模板匹配吗
可以，可以参考模板匹配的代码
可以保存图片为pgm
https://docs.singtown.com/micropython/zh/latest/openmvcam/library/omv.image.html#image.Image.image.save