digit_classifier.py

# -*- coding: utf-8 -*-
"""digit_classifier.ipynb

Automatically generated by Colaboratory.

Original file is located at
    https://colab.research.google.com/drive/1aZ59FUTh6dWzoEVDcx1sj3V6uHPmM-Ev
"""

import cv2 
import numpy as np
import matplotlib.pyplot as plt
import tensorflow as tf

mnist = tf.keras.datasets.mnist
(x_train, y_train), (x_test, y_test) = mnist.load_data()

x_train = tf.keras.utils.normalize(x_train, axis=1)
x_test = tf.keras.utils.normalize(x_test, axis=1)

model = tf.keras.models.Sequential()
model.add(tf.keras.layers.Flatten(input_shape=(28,28)))
model.add(tf.keras.layers.Dense(units=128, activation=tf.nn.relu))
model.add(tf.keras.layers.Dense(units=128, activation=tf.nn.relu))
model.add(tf.keras.layers.Dense(units=10, activation=tf.nn.softmax))

model.compile(optimizer='adam', loss='sparse_categorical_crossentropy', metrics=['accuracy'])

model.fit(x_train, y_train, epochs=10)

loss, accuracy = model.evaluate(x_test, y_test)
print(accuracy)
print(loss)

model.save('digits.model')

for x in range(1,6):
    img = cv2.imread(f'{x}.png')[:,:,0]
    img = np.invert(np.array([img]))
    prediction = model.predict(img)
    print(f"result:{np.argmax(prediction)}")
    plt.imshow(img[0], cmap=plt.cm.binary)
    plt.show()