Figure 1
From: Computer quantification of airway collapse on forced expiration to predict the presence of emphysema
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1465-9921-14-131/MediaObjects/12931_2013_Article_1437_Fig1_HTML.jpg)
Example of the calculation process with fitting of regression lines to the original data in incremental steps of 10 data points. Panels A-B show regression lines for a candidate reference point after respectively 10 and 400 data points. Panel C shows all regression lines together with a highlighted selection of 2 lines in yellow (after 6 steps) having the lowest MSE of all steps, as represented in Panel D.