Improve the LSTM and GRU model for small training data by wavelet transformation

Regarding collision prediction technology, the most common are car reversing radar and infrared rays, which provide warnings by sensing the distance between objects and cars. Although radar detection is accurate, radar systems that can provide instant 360-degree feedback are very expensive. The cost of infrared is much lower, but they cannot be applied to high-temperature environments. As the result, the technology of preventing collisions using only images from cameras is an important artificial intelligence topic in recent years. If a low-resolution CCD and artificial intelligence technology can be used to achieve a certain degree of accuracy in collision prediction, then low-cost anti-collision technology is worth looking forward to. Furthermore, we hope to provide anti-collision warnings on motorcycles and bicycles using this technology. In order to achieve this goal, computational simplification is a technical threshold. It's only when simple calculations achieve high-precision prediction can we meet the low power consumption requirements for image AI to be applied small vehicles. Therefore, we hope to find out a better image representation basis and combine it with AI technology to fulfill the requirements of less calculation and high accuracy. In addition, we also hope to create models with sufficient accuracy with small training data. This experiment will reduce development costs and get better efficiency in the early stage of developing ADAS.