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. Author manuscript; available in PMC: 2016 Aug 29.
Published in final edited form as: Med Image Comput Comput Assist Interv. 2011;14(Pt 3):66–74. doi: 10.1007/978-3-642-23626-6_9

Fig. 2.

Fig. 2

The squares show the image patches selected for descriptor computation: (a) fixed scale D0 and fixed orientation, (b) scale invariant, (c) fixed scale D0 and rotation invariant, and (d) scale and rotation invariant.