# US 10,118,378 B2 · Cross-section data generating device and cross-section data generating method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,118,378 B2 - Document ID: US10118378B2 - Status: Granted - Kind: B2 - Application number: 15/355,127 - Filed: 2016-11-18 - Published: 2017-05-25 - Granted: 2018-11-06 - Earliest claimed: 2015-11-20 - Assignees: Roland Dg Corporation - Applicants: Roland DG Corporation - Inventors: Makoto Yoshida - Web page: https://patentgrep.com/patent/US10118378B2 ## CPC - G06T 15/04: Texture mapping - B33Y 50/00: Data acquisition or data processing for additive manufacturing - G06T 7/13: Edge detection - G06T 7/50: Depth or shape recovery - G06T 7/90: Determination of colour characteristics - G06T 17/205: {Re-meshing} - G06T 19/00: Manipulating three-dimensional [3D] models or images for computer graphics - G06T 2200/04: involving 3D image data - G06T 2207/10024: Color image - G06T 2210/21: Collision detection, intersection - G06T 2219/008: Cut plane or projection plane definition - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING ## Abstract A cross-section data generating device includes a storage that stores therein a three-dimensional polygon model provided with color information, and a processor that executes a program to perform a shape obtaining process of obtaining a shape of an outline of the three-dimensional polygon model at a cross section that intersects the three-dimensional polygon model, and a color information obtaining process of obtaining color information of the outline at the cross section. ## Claims ### Claim 1 A cross-section data generating device comprising: a storage that stores a three-dimensional polygon model including color information; a shape obtaining processor configured or programmed to obtain a shape of an outline of the three-dimensional polygon model at a cross section, which is a plane that intersects the three-dimensional polygon model; and a color information obtaining processor configured or programmed to obtain color information of the outline at the cross section, wherein the color information of the outline includes color information of points and lines of the shape; and the shape of the outline includes points of intersection between the cross section and the three-dimensional polygon model and lines of intersection between the cross section and the three-dimensional polygon model. ### Claim 2 (depends on 1) The cross-section data generating device according to claim 1, wherein: the storage stores therein the three-dimensional polygon model such that each edge and each polygon of the three-dimensional polygon model are associated with the color information; the shape obtaining processor specifies at least one of the points of intersection between the cross section and each of the edges of the three-dimensional polygon model that intersects the cross section, and specifies at least one of the lines of intersection between the cross section and each of the polygons of the three-dimensional polygon model that intersects the cross section, thus obtaining the shape of the outline; and the color information obtaining processor passes color information of each edge that intersects at the at least one of the points of intersection on to the at least one of the points of intersection, and passes color information of each polygon that intersects the at least one of the lines of intersection on to the at least one of the lines of intersection, thus obtaining color information of the outline. ### Claim 3 (depends on 1) The cross-section data generating device according to claim 1, further comprising an image generating processor configured or programmed to generate, in accordance with the shape obtained by the shape obtaining processor and the color information obtained by the color information obtaining processor, color cross-section image data, which is image data of the outline that is represented by the shape and the color information. ### Claim 4 (depends on 3) The cross section data generating device according to claim 3, wherein the image generating processor generates the color cross-section image data of the slice model in raster format. ### Claim 5 (depends on 3) The cross-section data generating device according to claim 3, further comprising an output that outputs the color cross-section image data generated by the image generating processor to a three-dimensional printing device. ### Claim 6 (depends on 5) The cross-section data generating device according to claim 5, wherein the output outputs, to the three-dimensional printing device, predetermined thickness information together with the color cross-section image data generated by the image generating processor. ### Claim 7 (depends on 1) The cross-section data generating device according to claim 1, further comprising: an offsetting processor configured or programmed to offset the shape obtained by the shape obtaining processor toward the inside of the three-dimensional polygon model; and a color information passing processor configured or programmed to pass the color information obtained by the color information obtaining processor on to the offset shape which is derived by the offsetting processor. ### Claim 8 (depends on 7) The cross-section data generating device according to claim 7, further comprising an image generating processor configured or programmed to generate, in accordance with the offset shape which is derived by the offsetting processor and the color information which has been passed on by the color information passing processor, color cross-section image data which is image data of a post-offset outline represented by the shape and the color information. ### Claim 9 (depends on 8) The cross section data generating device according to claim 8, wherein the image generating processor generates the color cross-section image data of the slice model in raster format. ### Claim 10 (depends on 8) The cross-section data generating device according to claim 8, further comprising an output that outputs the color cross-section image data generated by the image generating processor to a three-dimensional printing device. ### Claim 11 (depends on 10) The cross-section data generating device according to claim 10, wherein the output outputs, to the three-dimensional printing device, predetermined thickness information together with the color cross-section image data generated by the image generating processor. ### Claim 12 (depends on 1) The cross-section data generating device according to claim 1, further comprising: an offsetting processor configured or programmed to offset the shape obtained by the shape obtaining processor toward the inside of the three-dimensional polygon model; a slice model generating processor configured or programmed to generate a slice model by meshing a gap between the shape obtained by the shape obtaining processor and the offset shape which is derived by the offsetting processor; and a color information passing processor configured or programmed to pass the color information obtained by the color information obtaining processor on to the slice model generated by the slice model generating processor. ### Claim 13 (depends on 12) The cross-section data generating device according to claim 12, further comprising an image generating processor configured or programmed to generate, in accordance with the slice model generated by the slice model generating processor and the color information passed on by the color information passing processor, color cross-section image data which is image data of the slice model including the color information. ### Claim 14 (depends on 13) The cross section data generating device according to claim 13, wherein the image generating processor generates the color cross-section image data of the slice model in raster format. ### Claim 15 (depends on 13) The cross-section data generating device according to claim 13, further comprising an output that outputs the color cross-section image data generated by the image generating processor to a three-dimensional printing device. ### Claim 16 (depends on 15) The cross-section data generating device according to claim 15, wherein the output outputs, to the three-dimensional printing device, predetermined thickness information together with the color cross-section image data generated by the image generating processor. ### Claim 17 A cross-section data generating method comprising: a shape obtaining step of obtaining a shape of an outline of a three-dimensional polygon model, provided with color information and stored in a storage, at a cross section, which is a plane that intersects the three-dimensional polygon model; and a color information obtaining step of obtaining color information of the outline at the cross section, wherein the color information of the outline includes color information of points and lines of the shape; and the shape of the outline includes points of intersection between the cross section and the three-dimensional polygon model and lines of intersection between the cross section and the three-dimensional polygon model. ### Claim 18 A non-transitory computer readable medium storing a program executable by a computer capable of reading a storage storing therein a three-dimensional polygon model provided with color information to execute a method comprising: a shape obtaining process of obtaining a shape of an outline of the three-dimensional polygon model at a cross section, which is a plane that intersects the three-dimensional polygon model; and a color information obtaining process of obtaining color information of the outline at the cross section, wherein the color information of the outline includes color information of points and lines of the shape; and the shape of the outline includes points of intersection between the cross section and the three-dimensional polygon model and lines of intersection between the cross section and the three-dimensional polygon model.