Computer vision and image recognition is often considered the first area where breakthroughs of deep learning occurred. Handwritten digit recognition has become a Hello World in this field, and a common evaluation set for image classification algorithms and techniques is the scanned document dataset constructed from the National Institute of Standards and Technology (NIST), called MNIST (M stands for modified, which means data is pre-processed for the ease of machine learning processes).
Some examples from MNIST are shown as follows:
Some researchers have so far achieved the best performance 0.21% ...
