Data restoration method and apparatus, and program therefor

摘要

Three-dimensional data is compressed at a high compression ratio without deteriorating resolution and accuracy, by computing a coupling coefficient from input three-dimensional data and a three-dimensional base data group obtained from a plurality of objects and outputting the coupling coefficient as compressed data. Specifically, the three-dimensional data is input to corresponding point determination means. The corresponding point determination means generates three-dimensional data to be synthesized in which vertexes of the three-dimensional data are made to correspond to vertexes of three-dimensional reference data serving as a reference to determine association relationship between vertexes. Coefficient computation means computes a coupling coefficient for coupling a three-dimensional base data group used for synthesis of three-dimensional data to synthesize three-dimensional data to be synthesized, and outputs the computed coupling coefficient as the compressed data of the three-dimensional data.

主权项

1. A data restoration apparatus comprising:
a memory device which three-dimensional base data which are identical with three-dimensional base data used in a data compression apparatus; a restoration device which receives compressed data containing a coupling coefficient and which restores three-dimensional data by using the coupling coefficient and the three-dimensional base data stored in the memory device; wherein the coupling coefficient is obtained from input three-dimensional data given to the data compression apparatus by determining a correspondence relationship between the three-dimensional base data and three-dimensional reference data; wherein the three-dimensional base data are made to correspond to three-dimensional reference data used in the data compression apparatus by a corresponding point determination process; and wherein the input three-dimensional data given to the data compression apparatus are made to correspond to the three-dimensional reference data by a corresponding point determination process to obtain the compressed data specified by the coupling coefficient.