Convolutional Neural Networks to find Cars

Hi, tuennermann
First of all, your tutorial is a great explanation about object detection! Well done!

Lately, I have been trying to replicate your results but using TensorFlow instead of Keras. However, my model is not converging as yours. I realized your Keras version is an old one (e.g., border_mode of Convolutional2D is not available in current documentation), so I took care to use the same parameters you used. 
You can see the complete code here:

Could you help me trying to understand why is it happening, please?

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