1. Pyimagesearch - computer vision and OpenCV guide, https://www.pyimagesearch.com/start-here-learn-computer-vision-opencv.
2. Pyimagesearch - Raspbian Stretch: Install OpenCV 3 + Python on your Raspberry Pi, https://www.pyimagesearch.com/2017/09/04/raspbian-stretch-install-opencv-3-python-on-your-raspberry-pi/.
3. Pyimagesearch - Accessing the Raspberry Pi Camera with OpenCV and Python, https://www.pyimagesearch.com/2015/03/30/accessing-the-raspberry-pi-camera-with-opencv-and-python/.
4. Pyimagesearch - Deep learning on Raspberry Pi, https://www.pyimagesearch.com/2017/08/21/deep-learning-with-opencv/.
5. Pyimagesearch - Raspberry Pi: Deep Learning Object Detection with OpenCV, https://www.pyimagesearch.com/2017/10/16/raspberry-pi-deep-learning-object-detection-with-opencv/.
6. Pythonprogramming - OpenCV with Raspberry Pi face detection https://pythonprogramming.net/raspberry-pi-camera-opencv-face-detection-tutorial/.
7. Adrian Rosebrock On. (2018) Using Tesseract OCR with Python - PyImageSearch. Retrieved October 01, 2018, from https://www.pyimagesearch.com/2017/07/10/using-tesseract-ocr-python/.
8. Google-images-download by hardikvasa on Github, https://github.com/hardikvasa/google-images-download.
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10.Adrian Keras Tutorial: How to get started with Keras, Deep Leraning, and python, https://www.pyimagesearch.com/2018/09/10/keras-tutorial-how-to-get-started-with-keras-deep-learning-and-python/.
11.machine learning mastery by Jason Brownlee, How To Develop and Evaluate Large Deep Learning Models with Keras on Amazon Web Services, https://machinelearningmastery.com/develop-evaluate-large-deep-learning-models-keras-amazon-web-services/.
12. Corey Schafer, PythonTutorial: Image Manipulation with Pillow, https://www.youtube.com/watch?v=6Qs3wObeWwc.
13. machine learning mastery by Jason Brownlee, How to Diagnose Overfitting and Underfitting of LSTM Models, https://machinelearningmastery.com/diagnose-overfitting-underfitting-lstm-models/.
14. Machine learning master by Jason Brownlee, Image Augmentation for Deep Learning With Keras, https://machinelearningmastery.com/image-augmentation-deep-learning-keras/.
15. Pyimagesearch - Keras and Deep Learning on the Raspberry Pi, https://www.pyimagesearch.com/2017/12/18/keras-deep-learning-raspberry-pi/.