. Fig, Piecewise registration of two consecutive myelin-stained histological sections of the human brain: (a) input reference image; (b) floating image; (c) floating image with clustered " arg max " displacement field; (d) registered floating sub-images; (e) binarized sub-images with darkened eroded pixels; (f) eroded registered floating sub-images; (g) input floating image with super-imposed colored eroded floating sub-images; (h) image of a regular grid convected by the associated hybrid affine/non-linear transformation with superimposed transformed eroded floating sub-images (in red); (i) final composed locally registered floating image; (j) superposition of the reference image (red) and of the globally affinely registered floating image (green); (k) superposition of the reference image (red) and of the locally registered floating image (green)

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