问在对象检测方面需要帮助YOLO或tensorflow如何比较两幅图像并通过SNS发送丢失对象的警报

EN

import tensorflow as tf
import tensorflow_io as tfio

import pandas as pd

import matplotlib.pyplot as plt

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Variables
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list_label_actual = [ 'Candidt Kibt', 'Pikaploy' ]

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: Dataset
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variables = pd.read_excel('F:\\temp\\Python\\excel\\Book 7.xlsx', index_col=None, header=[0])

list_label = [ ]
list_Image = [ ]
list_file_actual = [ ]

for Index, Image, Label in variables.values:
    print( Label )
    list_label.append( Label )
    
    image = tf.io.read_file( Image )
    image = tfio.experimental.image.decode_tiff(image, index=0)
    list_file_actual.append(image)
    image = tf.image.resize(image, [32,32], method='nearest')
    list_Image.append(image)


list_label = tf.cast( list_label, dtype=tf.int32 )
list_label = tf.constant( list_label, shape=( 33, 1, 1 ) )
list_Image = tf.cast( list_Image, dtype=tf.int32 )
list_Image = tf.constant( list_Image, shape=( 33, 1, 32, 32, 4 ) )

dataset = tf.data.Dataset.from_tensor_slices(( list_Image, list_label ))
list_Image = tf.constant( list_Image, shape=( 33, 32, 32, 4) ).numpy()

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: Model Initialize
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model = tf.keras.models.Sequential([
    tf.keras.layers.InputLayer(input_shape=( 32, 32, 4 )),
    tf.keras.layers.Normalization(mean=3., variance=2.),
    tf.keras.layers.Normalization(mean=4., variance=6.),
    tf.keras.layers.Dense(256, activation='relu'),
    tf.keras.layers.Reshape((256, 32 * 32)),
    tf.keras.layers.Bidirectional(tf.keras.layers.LSTM(196, return_sequences=True, return_state=False)),
    tf.keras.layers.Bidirectional(tf.keras.layers.LSTM(196)),
    tf.keras.layers.Flatten(),
    tf.keras.layers.Dense(192, activation='relu'),
    tf.keras.layers.Dense(2),
])

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: Callback
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class custom_callback(tf.keras.callbacks.Callback):
    def on_epoch_end(self, epoch, logs={}):
        if( logs['accuracy'] >= 0.97 ):
            self.model.stop_training = True
    
custom_callback = custom_callback()

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: Optimizer
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optimizer = tf.keras.optimizers.Nadam(
    learning_rate=0.000001, beta_1=0.9, beta_2=0.999, epsilon=1e-07,
    name='Nadam'
)

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: Loss Fn
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lossfn = tf.keras.losses.SparseCategoricalCrossentropy(
    from_logits=False,
    reduction=tf.keras.losses.Reduction.AUTO,
    name='sparse_categorical_crossentropy'
)

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: Model Summary
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model.compile(optimizer=optimizer, loss=lossfn, metrics=['accuracy'] )

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: Training
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history = model.fit( dataset, batch_size=100, epochs=50, callbacks=[custom_callback] )

plt.figure(figsize=(6,6))
plt.title("Actors recognitions")
for i in range(len(list_Image)):
    img = tf.keras.preprocessing.image.array_to_img(
        list_Image[i],
        data_format=None,
        scale=True
    )
    img_array = tf.keras.preprocessing.image.img_to_array(img)
    img_array = tf.expand_dims(img_array, 0)
    predictions = model.predict(img_array)
    score = tf.nn.softmax(predictions[0])
    plt.subplot(6, 6, i + 1)
    plt.xticks([])
    plt.yticks([])
    plt.grid(False)
    plt.imshow(list_file_actual[i])
    plt.xlabel(str(round(score[tf.math.argmax(score).numpy()].numpy(), 2)) + ":" +  str(list_label_actual[tf.math.argmax(score)]))
    
plt.show()

input('...')