Three-dimensional object data generation apparatus, three-dimensional object forming apparatus, and non-transitory computer readable medium
A three-dimensional object data generation apparatus includes an obtaining unit that obtains three-dimensional object data representing a three-dimensional object with plural voxels, for each of which a physical property value is set, a setting unit that sets a three-dimensional threshold matrix in which thresholds are arranged in a three-dimensional space in accordance with a predetermined basic shape, and a calculation unit that calculates whether to form each of the plural voxels on a basis of the physical property value of the voxel and the three-dimensional threshold matrix.
1. A three-dimensional object data generation apparatus comprising:
a processor configured to:
obtain three-dimensional object data representing a three-dimensional object with a plurality of voxels, for each of which a physical property value is set;
set a three-dimensional threshold matrix in which thresholds are arranged in a three-dimensional space in accordance with a predetermined basic shape;
calculate whether to form each of the plurality of voxels on a basis of the physical property value of the voxel and the three-dimensional threshold matrix; and
extract an edge of the three-dimensional object,
wherein the processor is further configured to set a first three-dimensional threshold matrix corresponding to a first physical property for a first voxel corresponding to a part other than the edge and a second three-dimensional threshold matrix corresponding to a second physical property, which is higher than the first physical property, for a second voxel corresponding to the edge.
2. The three-dimensional object data generation apparatus according to claim 1 ,
wherein the thresholds at positions corresponding to the basic shape are set to a minimum possible value.
3. The three-dimensional object data generation apparatus according to claim 2 ,
wherein the thresholds at positions other than the positions corresponding to the basic shape are set such that the thresholds increase toward a periphery of the three-dimensional space from a center of the three-dimensional space.
4. The three-dimensional object data generation apparatus according to claim 3 ,
wherein the processor is further configured to convert the physical property value of each of the plurality of voxels into a physical property value with which the three-dimensional object achieves a target physical property.
5. The three-dimensional object data generation apparatus according to claim 2 ,
wherein the processor is further configured to convert the physical property value of each of the plurality of voxels into a physical property value with which the three-dimensional object achieves a target physical property.
6. The three-dimensional object data generation apparatus according to claim 1 ,
wherein the thresholds at positions other than the positions corresponding to the basic shape are set such that the thresholds increase toward a periphery of the three-dimensional space from a center of the three-dimensional space.
7. The three-dimensional object data generation apparatus according to claim 6 ,
wherein the processor is further configured to convert the physical property value of each of the plurality of voxels into a physical property value with which the three-dimensional object achieves a target physical property.
8. The three-dimensional object data generation apparatus according to claim 1 ,
wherein the processor is further configured to convert the physical property value of each of the plurality of voxels into a physical property value with which the three-dimensional object achieves a target physical property.
9. The three-dimensional object data generation apparatus according to claim 8 ,
wherein the processor is further configured to convert the physical property value of each of the plurality of voxels into the physical property value with which the three-dimensional object achieves the target physical property using a conversion table and to update the conversion table using a physical property value measured from the three-dimensional object formed on a basis of the three-dimensional object data.
10. A three-dimensional object forming apparatus comprising:
the three-dimensional object data generation apparatus according to claim 1 ; and
a forming unit comprising a controller configured to form the three-dimensional object on a basis of the three-dimensional object data generated by the three-dimensional object data generation apparatus.
11. A non-transitory computer readable medium storing a program for generating three-dimensional object data, the program causing a computer to execute a process, the process comprising:
obtaining three-dimensional object data representing a three-dimensional object with a plurality of voxels, for each of which a physical property value is set;
setting a three-dimensional threshold matrix in which thresholds are arranged in a three-dimensional space in accordance with a predetermined basic shape;
calculating whether to form each of the plurality of voxels on a basis of the physical property value of the voxel and the three-dimensional threshold matrix;
extracting an edge of the three-dimensional object; and
setting a first three-dimensional threshold matrix corresponding to a first physical property for a first voxel corresponding to a part other than the edge and a second three-dimensional threshold matrix corresponding to a second physical property, which is higher than the first physical property, for a second voxel corresponding to the edge.