openmv与电脑连接下代码正常运行,但只要将代码放到SD卡让他脱机上电运行就会报错并且SD被损坏代码乱码?
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# Face recognition with LBP descriptors. # See Timo Ahonen's "Face Recognition with Local Binary Patterns". # # Before running the example: # 1) Download the AT&T faces database http://www.cl.cam.ac.uk/Research/DTG/attarchive/pub/data/att_faces.zip # 2) Exract and copy the orl_faces directory to the SD card root. import sensor, time, image, pyb, lcd from pyb import UART uart = UART(3, 115200) sensor.reset() # Initialize the camera sensor. sensor.set_pixformat(sensor.GRAYSCALE) # or sensor.GRAYSCALE sensor.set_framesize(sensor.QQVGA2) # or sensor.QQVGA (or others) sensor.skip_frames(10) # Let new settings take affect. lcd.init() sensor.skip_frames(time = 3000) #等待5s #SUB = "s1" NUM_SUBJECTS = 2 #图像库中不同人数,一共6人 NUM_SUBJECTS_IMGS = 20 #每人有20张样本图片 while True: # 拍摄当前人脸。 img = sensor.snapshot() #img.draw_string(0,0,"hjhjk") pyb.LED(2).off() lcd.display(img) # 拍照并显示图像。 #img = sensor.snapshot() #img = image.Image("singtown/%s/1.pgm"%(SUB)) d0 = img.find_lbp((0, 0, img.width(), img.height())) #d0为当前人脸的lbp特征 img = None pmin = 999999 num=0 def min(pmin, a, s): global num if a<pmin: pmin=a num=s return pmin for s in range(1, NUM_SUBJECTS+1): dist = 0 for i in range(2, NUM_SUBJECTS_IMGS+1): img = image.Image("facedb/face%d/%d.pgm"%(s, i)) d1 = img.find_lbp((0, 0, img.width(), img.height())) #d1为第s文件夹中的第i张图片的lbp特征 dist += image.match_descriptor(d0, d1)#计算d0 d1即样本图像与被检测人脸的特征差异度。 print("Average dist for subject %d: %d"%(s, dist/NUM_SUBJECTS_IMGS)) pmin = min(pmin, dist/NUM_SUBJECTS_IMGS, s)#特征差异度越小,被检测人脸与此样本更相似更匹配。 print(pmin) print(num) # num为当前最匹配的人的编号。 if(dist/NUM_SUBJECTS_IMGS < 10000) : pyb.LED(2).on() if num == 1: imgstr = sensor.snapshot() imgstr.draw_string(0,0,"Ms.Pu",0) lcd.display(imgstr) # 拍照并显示图像。 uart.write("1\r\n") elif num ==2: imgstr = sensor.snapshot() imgstr.draw_string(0,0,"Ms.Yuan",0) lcd.display(imgstr) # 拍照并显示图像。 uart.write("2\r\n") time.sleep(5)
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脱机上电,IDE不会有提示,为什么会显示有报错?
SD被损坏代码乱码,是什么意思?提供一下具体的图片。
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你好,之前是我表述错误。就是想脱机运行人脸识别代码时,LCD屏无任何反应并不能实现人脸识别的功能,于是重新将openMV与摄像头连接时,发现main里的代码全都乱码。请问这是什么情况?