Fig. 3
From: ImageJ2: ImageJ for the next generation of scientific image data
ImageJ 1.x case logic compared to a unified ImgLib2 implementation. Panel a (left) shows the ImageJ 1.x implementation of a rolling ball background subtraction method, part of the ij.plugin.filter.BackgroundSubtracter class. Panel b (right) shows an equivalent implementation using ImgLib2, without the need for extensive case logic