Example dendrogram extraction of Orion B: a nearby, well-studied giant molecular cloud. Top left: (l, b) thumbnail of the cloud and its neighboring region as seen on the sky. Bottom left: (l, v) thumbnail of the same region. Right: dendrogram cutout, with Orion B's structures highlighted in blue. The pixels corresponding to the highlighted dendrogram structures are outlined in the blue contour (in projection); a representative ellipse is drawn in red, with semimajor axis length equal to the second moment along each relevant dimension (as calculated in Section 2.2). Data come from DHT Survey #27 (the Orion complex).