The SCR File Format

This document describes the specification of the Sparsely Coded Residuals (SCR) file format for storing three-dimensional volume data in a compressed form. More precisely, the format is designed to store representations of reconstructed volumes in three-dimensional computed tomography in a wavelet basis. It is flexible with regards to the choice of wavelets, thresholding techniques, and tiling for large datasets. Based on the netCDF container format, SCR contains the structure of the stored information and in this sense, it is a self-describing format. This manuscript provides a report of the main concepts of SCR, and closes with an overview of possible user-defined extensions.