Background subtraction and statistical heuristics
Plumes are difficult to identify in the original images because there are many other distracting features in the cityscape. To control for this, background subtraction methods (Figure \ref{724398}), were employed in order to remove stationary objects from the frame. This works as a noise attenuation method which both subtracts out irrelevant features for detecting plumes and removes a majority of the features that are specific to this cityscape and makes the model more generalizable.