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. Author manuscript; available in PMC: 2015 Oct 21.
Published in final edited form as: Lab Chip. 2015 Aug 26;15(20):4020–4031. doi: 10.1039/c5lc00636h

Fig. 5.

Fig. 5

Summary depicting major steps (left to right) of the automated image analysis routine for a single bead. A collection of Gabor annulus filters are applied to the derivative of a raw image via 2-D convolution to locate the centroid of the bead. Once located, the annular ROI method averages the pixel intensity near the bead’s outer radius where signal is greatest (far right, the ROI shown between red and blue circles).