Deep Learning, Artificial Intelligence, Convolutional Network, Object Detection, Data Science.
threshold. 2.3. Balancing fg-bg RoIs To handle the data imbalance, heuristics is designed to rebalance the foreground-to-background ratio in each mini-batch to a target of 1 : 3 by undersampling the background patches at random, thus ensuring that 25% of a mini-batch is fg RoIs. OHEM removes this