最近的人脸识别邻居很难失败

Question

我必须为uni实现。最近的人脸识别邻居算法，我在matlab中有代码，但是我想在python中实现它。在此代码的matlab中，我得到了大约90％的识别率。在python中，只有1.25％的成功是灾难性的。我为python尝试了不同的方法，但没有成功。您看到错误可能在哪里吗？

Python

import cv2
import numpy as np
from numpy import linalg as LA
from PIL import Image
import math


def load_images(tests):
    images = []
    for x in range(1,40):
        for y in range(1, tests):
            temp_im = np.array(cv2.imread(f"s{x}/{y}.pgm", 0))
            temp_im = temp_im.reshape((10304, 1))
            images.append(temp_im)
    return np.array(images)


def algoritm_nn(to_be_found, show_image):
    images = load_images(6)
    to_be_found = to_be_found.reshape((10304, 1))
    min_values = []
    for img in images:
        rez = LA.norm(np.subtract(to_be_found, img))
        min_values.append(rez)
    minim = min(min_values)
    index = min_values.index(minim)

    if(show_image):
        img = images[index].reshape((112,92))
        img = Image.fromarray(img)
        img.show()
        img = to_be_found.reshape((112,92))
        img = Image.fromarray(img)
        img.show()        
    else:
        return index


def statistics(tests):  
    counter = 0 
    for x in range(1,40):
        for y in range(tests+1, 10):
            temp_im = np.array(cv2.imread(f"s{x}/{y}.pgm", 0))
            temp_im = temp_im.reshape((10304, 1))
            index = algoritm_nn(temp_im,0)                        
            if math.floor(index / tests) + 1 == x:
                counter += 1

    return (counter/((10-tests)*40)) * 100


print(statistics(6))

Matlab

function index=NN(A,image,norm);

totalimages = size(A,2);
z = zeros(1,totalimages); % vector of distances . 
find=zeros(size(image,1)*size(image,2),1); %vector of 10304 
find(:,1)=reshape(image,size(image,1)*size(image,2),1);
for i=1:totalimages
    switch norm
        case 'n1',z(i)=norm(find-A(:,i),1);
        case 'n2',z(i)=norm(find-A(:,i),2);
        case 'n3',z(i)=norm(find-A(:,i),inf);  
        case 'n4',z(i)=1-dot(find,A(:,i))/norm(find)*norm(A(:,i));
    end
end
[distance,index]=min(z)

对于matlab，我想指定A代表训练矩阵。