This is great example of deep learning that is applied to real world problem. I am just curious if that can be done more easier and more robust by using simple

This is great example of deep learning that is applied to real world problem. I am just curious if that can be done more easier and more robust by using simple image processing algorithms? Box detection and OCR can work well and may produce better results with different types of mockups. Sometimes I feel like we are making problems even more complicated trying to solve them by using popular concepts.