Reference
- [Building a Real-Time Object Recognition App with Tensorflow and OpenCV] (https://towardsdatascience.com/building-a-real-time-object-recognition-app-with-tensorflow-and-opencv-b7a2b4ebdc32)
- http://kovan.ceng.metu.edu.tr/LogoDataset/
- https://data.vision.ee.ethz.ch/sagea/lld/
- https://springml.com/2018/08/07/streaming-ocr-vision-api/
- https://github.com/satojkovic/DeepLogo