你好就是我用openmv4plus训练模型识别数字 但是一直会出现把3认成6，这是咋回事尼

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.
templates = ["/0.pgm","/1.pgm", "/2.pgm", "/3.pgm"] #保存多个模板
numerical = [0,1,2,3]
coordinate_x =[0,0,0,0]
numerical_x = [0,0,0,0]
i=0
#加载模板图片

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.
    for t in templates:
        template = image.Image(t)
        #对每个模板遍历进行模板匹配
        r = img.find_template(template, 0.70, step=4, search=SEARCH_EX) #, roi=(10, 0, 60, 60))
    #find_template(template, threshold, [roi, step, search]),threshold中
    #的0.7是相似度阈值,roi是进行匹配的区域（左上顶点为（10，0），长80宽60的矩形），
    #注意roi的大小要比模板图片大，比frambuffer小。
    #把匹配到的图像标记出来
        if r:
            img.draw_rectangle(r)
            #print(templates.index(t))
            coordinate_x [i] = r[0]
            numerical_x [i]  = numerical[templates.index(t)]
            i+=1
            print( numerical_x) #打印模板名字
            print( coordinate_x)
        if i==3:
           i=0

想不到方法了，我只想保存0到9模板然后识别两位数字或多位，求大神给点思路

我想请问一下就我要创一个数组，然后通过数组的中任意一个值得到该数字在该数组中的索引值应该咋弄 我看IDE好像不支持numpy

cmsis-nn库被删了，那我应该怎么用openmv4 H7对数字或者一排数字进行识别啊，还有openmv4h7普通版本能用训练神经网络学习识别口罩妈