Computer Programs

The Visible Cement Data Set website also contains a variety of computer programs, written in the C programming language, to aid in the processing of three-dimensional data sets. The programs may be downloaded (via FTP), compiled, and applied to the data sets also available from the website. The following computer programs are currently available:

• extract- program to extract an arbitrary subvolume of data from the 512 x 1024 x 1024 volumes;

• makehist- program to produce a greylevel histogram file (named makehist.out) for a 3-D image;

• segment- program to produce a segmented (phase) image from an initial greylevel image by applying a multi-level thresholding operation [17];

• median and mediangrey- programs to apply a median filter [17] to either a segmented (median) 3-D image or to an initial (mediangrey) greylevel format image;

• clusterid- program to apply a "burning" algorithm [18] to identify individual particle clusters in a 3-D image;

• percolate- program to assess the percolation or connectivity of a "phase" in a 3-D segmented image [18];