Geometric Granted Patent for Shape-Based Search Technology

20 Aug, 2008

Technology allows users to search 3D models based on shape.

Geometric announced today that the company was granted a patent titled "Geometry based search method for 3D CAx/PDM repositories" by the U.S. Patent and Trademark Office (Patent no. 7,397,473). The patent outlines algorithms and methods to locate 3D CAD models based on shape data, instead of text and attribute-based search methods. Geometric's 3DSearchIT is a shape-based search engine technology, built on patented algorithms.

According to the patent's abstract, "Traditional techniques of 3D data retrieval using names and subjective attributes are not robust and are difficult to automate over large 3D repositories. Certain techniques developed for search and classification of 2D engineering designs, are in general, difficult to extend to 3D models. These issues are addressed by a system for automated search and classification for 3D CAx models based on their geometric 'shape,' which is often an indication of design, analysis, and manufacturing process similarity. A new method and system are provided for representing 3D shape as a composition of multiple 2D image projections, which are transformed using the Discrete Fourier and Harr Wavelet transforms. Key coefficients of the transforms are then stored in the 3D model repository and are used to efficiently search and classify such repositories."

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