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因为要对仪器仪表进行检测，没有实物只有图片，电脑上的图片因为显示原因有点问题，想知道有没有办法暂时代替摄像头的功能，直接从SD卡里读取图片进行图片处理
https://book.openmv.cc/example/03-Drawing/copy2fb.html