# US 2017/0281111 A1 · Device for visualizing a 3d object > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0281111 A1 - Document ID: US20170281111A1 - Status: Published application - Kind: A1 - Application number: 15/507,553 - Filed: 2015-09-01 - Published: 2017-10-05 - Earliest claimed: 2014-09-02 - Assignees: Koninklijke Philips N.V. - Applicants: Koninklijke Philips N.V. - Inventors: MARTIJN VAN GELOOF - Web page: https://patentgrep.com/patent/US20170281111A1 ## CPC - A61B 6/5223: {generating planar views from image data, e.g. extracting a coronal view from a 3D image} - A61B 6/03: Computed tomography [CT] - G06T 19/00: Manipulating three-dimensional [3D] models or images for computer graphics - A61B 6/466: {adapted to display 3D data} - G06T 15/205: {Image-based rendering} - G06T 2210/41: Medical - G06T 2219/008: Cut plane or projection plane definition - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ## Abstract The invention relates to a device (10) for visualizing a 3D object, an X-ray imaging system (1) for visualizing a 3D object, a method for visualizing a 3D object, and a computer program element for controlling such device (10) and a computer readable medium having stored such computer program element. The device (10) for visualizing a 3D object comprises a processing unit (11). The processing unit (11) is configured to provide an image in a 2D projection plane (23). The processing unit (11) is configured to project an initial 3D object (22) from an initial plane (27) with an inverse projection transformation in the 2D projection plane (23) of the image to achieve an inverse 2D object (24). The inverse projection transformation is a projection transformation, wherein a vanishing point is at the other side of the 2D projection plane (23) than the initial object. The processing unit (11) is configured to point-mirror the inverse 2D object (24) to achieve a mirrored non-inverse 2D object (25). The processing unit (11) is configured to project the mirrored non-inverse 2D object (25) back to the initial plane (27) to provide a corrected 3D object (26). The processing unit (11) is configured to project the corrected 3D object (26) again to the 2D projection plane (23) of the image to provide a final 3D object (28) appearing to be non-inversely projected. ## Claims ### Claim 1 A device for visualizing a 3D object, comprising a processing unit, wherein the processing unit is configured to provide an image in a 2D projection plane wherein the processing unit is configured to project an initial 3D object lying in an initial plane with an inverse projection transformation in the 2D projection plane of the image to achieve an inverse 2D object; wherein the initial 3D object has a shape symmetrical to the initial 3D object's geometrical centroid, wherein the inverse projection transformation is a projection transformation, and wherein a vanishing point is at the other side of the 2D projection plane than the initial object; characterized in that the processing unit is configured to point-mirror the inverse 2D object to achieve a mirrored non-inverse 2D object; the processing unit is configured to project the mirrored non-inverse 2D object back to the initial plane to provide a corrected 3D object, and the processing unit is configured to project the corrected 3D object to the 2D projection plane of the image to provide a final 3D object appearing to be non-inversely projected. ### Claim 2 (depends on 1) Device according to claim 1, wherein the image is an X-ray image. ### Claim 3 (depends on 1) Device according to claim 1, wherein the initial 3D object is a cutting plane or a clipping plane. ### Claim 4 (depends on 1) Device according to claim 1, wherein the image further comprises an inversely projected anatomical 3D structure, which remains inversely projected while providing the final object appearing to be non-inversely projected. ### Claim 5 (depends on 4) Device according to claim 4, wherein the processing unit is configured to scale the final 3D object such that it enlarges when approaching a camera. ### Claim 6 (depends on 5) Device according to claim 5, further comprising an interface unit configured for a manipulation of the initial 3D object. ### Claim 7 (depends on 6) An X-ray imaging system for visualizing a 3D object, comprising: an image acquisition unit, a device for visualizing a 3D object according to claim 6, and a display unit, wherein the image acquisition unit is configured for acquiring an image to be provided by a processing unit of the device for visualizing a 3D object; and wherein the display unit is configured to display a final 3D object provided by the processing unit of the device for visualizing a 3D object. ### Claim 8 A method for visualizing a 3D object, comprising the following steps: providing an image in a 2D projection plane; projecting an initial 3D object from an initial plane with an inverse projection transformation to the 2D projection plane of the image to achieve an inverse 2D object; wherein the initial 3D object has a shape symmetrical to the initial 3D object's geometrical centroid, wherein the inverse projection transformation is a projection, and wherein a vanishing point is at the other side of the 2D projection plane than the initial object; characterized by the further steps of: point-mirroring the inverse 2D object to achieve a mirrored non-inverse 2D object; projecting the mirrored non-inverse 2D object back to the initial plane to provide a corrected 3D object; and projecting the corrected 3D object to the 2D projection plane of the image to provide a final 3D object appearing to be non-inversely projected. ### Claim 9 (depends on 1) A computer program element for controlling a device or system according to claim 1, which, when being executed by a processing unit, is adapted to perform the method steps for visualizing a 3D object. ### Claim 10 (depends on 9) A computer readable medium having stored the computer program element of claim 9.