Workbench Command is a set of command-line tools that can be used to perform simple and complex operations within Connectome Workbench.
FIND EXTREMA IN A VOLUME FILE wb_command -volume-extrema <volume-in> - volume file to find the extrema of <distance> - the minimum distance between identified extrema of the same type <volume-out> - output - the output extrema volume [-presmooth] - smooth the volume before finding extrema <kernel> - the sigma for the gaussian smoothing kernel, in mm [-roi] - ignore values outside the selected area <roi-volume> - the area to find extrema in [-threshold] - ignore small extrema <low> - the largest value to consider for being a minimum <high> - the smallest value to consider for being a maximum [-sum-subvols] - output the sum of the extrema subvolumes instead of each subvolume separately [-consolidate-mode] - use consolidation of local minima instead of a large neighborhood [-only-maxima] - only find the maxima [-only-minima] - only find the minima [-subvolume] - select a single subvolume to find extrema in <subvolume> - the subvolume number or name Finds extrema in a volume file, such that no two extrema of the same type are within <distance> of each other. The extrema are labeled as -1 for minima, 1 for maxima, 0 otherwise. If -only-maxima or -only-minima is specified, then it will ignore extrema not of the specified type. These options are mutually exclusive. If -sum-subvols is specified, these extrema subvolumes are summed, and the output has a single subvolume with this result. By default, a datapoint is an extrema only if it is more extreme than every other datapoint that is within <distance> from it. If -consolidate-mode is used, it instead starts by finding all datapoints that are more extreme than their immediate neighbors, then while there are any extrema within <distance> of each other, take the two extrema closest to each other and merge them into one by a weighted average based on how many original extrema have been merged into each. By default, all input subvolumes are used with no smoothing, use -subvolume to specify a single subvolume to use, and -presmooth to smooth the input before finding the extrema.