Abstract: A method of generating point cloud data from a laser scanning device, retaining a scanner pattern based on point cloud data, and generating an abbreviated mesh from the point cloud such that it can be faithfully restored to the original point cloud. The point cloud data must be structured such that azimuth, elevation, and range data can be extracted. The abbreviated mesh version of the point cloud is generated utilizing selected azimuth, elevation, and range data. Scanner patterns are generated utilizing the azimuth and elevation data. To faithfully regenerate the point cloud data from the abbreviated mesh, the mesh and the scanner pattern are cross referenced such that the regenerated point cloud has minimal data loss.

Abstract: A method and system for generating a three-dimensional (3D) multi-resolution meshing structure is provided. The 3D multi-resolution meshing structure is obtained in a two-steps simplification and refinement process that does not require a 3D-to-2D parameterization phase and wherein the geometry of the surface of the 3D object is used during the refinement step.

Abstract: A method and system for storing a multi-dimensional digital data object is provided. A multi-scale transform function is applied to the multi-dimensional object to generate a plurality of high and low frequency data sub-bands. High frequency data sub-bands are rotated in one or several of the multi-dimensions. The rotated and the non-rotated data sub-bands are assembled into a data bit stream. The multi-dimensional digital data object is then saved as a data bit stream. The method and system allows applying a reverse method to the data bit stream to reconstruct the multi-dimensional digital data object.

Abstract: The invention concerns a method of converting raw multidimensional digital data corresponding to points making up a 2D or 3D image of unknown size and an associated system. The method comprises: the sizing a multidimensional window for traversing of said image, the said sizing depending on the size of a buffer; the traversing the said image comprising the movement of the said window in the image along the axes of the image; at each position of the said window in the image: the step of acquisition and loading, in the said buffer, of the data of the part of the image defined by the window; the conversion by calculation of the multidimensional wavelet transform of the said loaded part by means of at least one compact support filter for generating low- and high-frequency coefficients; the saving of the said coefficients generated. Application to wavelet transformation synchronously with the acquisition of medical or seismic images.

Abstract: The invention concerns a method of converting raw multidimensional digital data corresponding to points making up a 2D or 3D image of unknown size and an associated system. The method comprises: the sizing a multidimensional window for traversing of said image, the said sizing depending on the size of a buffer; the traversing the said image comprising the movement of the said window in the image along the axes of the image; at each position of the said window in the image: the step of acquisition and loading, in the said buffer, of the data of the part of the image defined by the window; the conversion by calculation of the multidimensional wavelet transform of the said loaded part by means of at least one compact support filter for generating low- and high-frequency coefficients; the saving of the said coefficients generated. Application to wavelet transformation synchronously with the acquisition of medical or seismic images.