Python Machine Learning Cookbook - Second Edition

How to do it...

Let's see how we can build a face recognizer using a local binary patterns histogram:

1. Create a new Python file and import the following packages (the full code is given in the face_recognizer.py file that is provided for you):

import os 
 
import cv2 
import numpy as np 
from sklearn import preprocessing  

2. Let's define a class to handle all of the tasks that are related to label encoding for the classes:

# Class to handle tasks related to label encoding 
class LabelEncoder(object): 

3. Define a method to encode the labels. In the input training data, labels are represented by words. However, we need numbers to train our system. This method will define a preprocessor object that can convert words into numbers in an organized fashion ...