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. Author manuscript; available in PMC: 2016 Aug 1.
Published in final edited form as: Placenta. 2015 May 12;36(8):944–946. doi: 10.1016/j.placenta.2015.05.004

Figure 1. Illustrations of the sequence of events in shape matching algorithm.

Figure 1

a) Glare-free 2D image of a fixed placenta. b) 2D image of placenta with colors injected in arteries and veins. c) Manual tracing of arterial network from uninjected image in a). d) Scaled, translated and skeletonized binary image of manual tracing. e) Visual representation of polar mesh placed on sampled skeletonized image to obtain shapematrix. f) A sample shapematrix with 10 angular bins on horizontal axis and 8 radial bins on vertical axis. Darker bins represent lesser points.