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. 2015 Oct 29;42(11):6725–6735. doi: 10.1118/1.4934373

FIG. 3.

FIG. 3.

Computing the RLM. The original tumor ROI is reduced to a 4-bit grayscale image (16 different intensities). RLM is constructed by counting the number of runs with each gray level and run-lengths. Eleven features can be computed by weighting and summing different entries of the matrix.