Method for generating 3D data relating to an object
AssigneeOcean Maps GmbH
InventorsThomas Nemetz, Kreshnik Halili
Life of this patent
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Abstract
The invention relates to a method of generating 3D data of an object, in particular for the generation of underwater maps. This method comprises the following steps: provision of two-dimensional image data of the surface of the object, such as e.g. the bottom of a body of water, together with reference information provision of a three-dimensional relief map of a predetermined area of the object or of the bottom of a body of water, and mapping of the two-dimensional image data as texture on the three-dimensional relief map by means of the reference information.
Claims12
Method of generating 3D data of an object for the generation of underwater maps with a scanner comprising a camera, referencing device, and 3D scanner and a computer, wherein the following steps are performed:
- provision of two-dimensional image data with the camera of a surface of the object, including a bottom of a body of water, together with reference information from the referencing device;
- provision of a three-dimensional polygonized relief map of a predetermined area of the object or of the bottom of a body of water using the 3D scanner, and
- mapping of the two-dimensional image data as texture on the three-dimensional polygonized relief map by means of the reference information with the computer that generates a relief map in which the individual points have a maximum spacing of 20 centimeters.
Method of generating 3D data of an object for the generation of underwater maps with a scanner comprising a camera, referencing device, and a 3D scanner and a computer, wherein the following steps are performed:
- provision of two-dimensional image data with the camera of a surface of the object, including a bottom of a body of water, together with reference information from the reference device;
- provision of a three-dimensional polygonized relief map of a predetermined area of the object or of the bottom of a body of water using the 3D scanner, and
- mapping of the two-dimensional image data as texture on the three-dimensional polygonized relief map by means of the reference information with the computer,
- wherein the reference information contains the direction of view used to record the two-dimensional image data and, in mapping the two-dimensional image data as texture on the three-dimensional relief map, the two-dimensional image data are weighted in inverse proportion to the deviation of the direction of view from the normal of the area of the three-dimensional relief map on which the two-dimensional image data are mapped.
Method of generating a texture which can be mapped on a three-dimensional relief map with a scanner comprising a camera and a referencing device and a computer, wherein the texture is generated from two-dimensional image data from the camera which has been created from a real object corresponding to an object represented on the relief map,
- wherein a virtual image which has been created of the object represented on the relief map by the computer, wherein the virtual image is created with the same camera position of the camera, the same direction of view and the same field of view as a corresponding real image of the two-dimensional image data with reference to information from the referencing device,
- a texture space of the object represented in the relief map is created by the computer, so that an assignment exists in each case between points of the surface of the object represented in the relief map and texels of the texture space, and
- the image points of this real image are assigned by the computer to the texture space by means of the real image and the assignment hereby determined between the image points of the virtual image, each representing a point on the surface of the object, and their assignment to the texels of the texture space.
Dependencies are inferred from the claim text.