Figure 3
![Figure 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2229-13-81/MediaObjects/12870_2013_Article_1286_Fig3_HTML.jpg)
Screenshot of iCluster as an example of image clustering results. The six images extracted from the Plant Organelle Database [6] (Additional file 1: Figure S1) and the 55 images from LIPS dataset III were analyzed with a two-dimensional Sammon map, a clustering algorithm, implemented in iCluster software. The six Plant Organelle Database images are highlighted in red. See also Additional file 1: Figure S2.