Three-dimensional data generating apparatus, recording medium, and method using a curve indicating a relationship between height and distance

Patent metadata

Field	Value
Publication number	US-11048232-B2
Application number	US-201916558680-A
Country	US
Kind code	B2
Filing date	Sep 3, 2019
Priority date	Sep 27, 2018
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A three-dimensional data generating apparatus includes an input curve receiving unit configured to receive input of a curve indicating a relationship between a height and a distance from an outline of a target area to each position within the target area, a three-dimensional shape of the target area being generated from a two-dimensional image; and a three-dimensional data generating unit configured to calculate the height at each of the positions within the target area in accordance with the distance, the distance being calculated from a point on the outline to a corresponding position of the positions, and to generate data representing the three-dimensional shape of the target area based on the calculated height.

First claim

What is claimed is:

1. A three-dimensional data generating apparatus comprising:
a processor configured to:
receive input of a curve indicating a relationship between a height and a distance starting from an outline of a target area to each of positions within the target area, a three-dimensional shape of the target area being generated from a two-dimensional image; and
calculate the height at each of the positions within the target area in accordance with the distance, the distance being calculated from a point on the outline to a corresponding position of the positions, and generate data representing the three-dimensional shape of the target area based on the calculated height,
wherein the processor is configured to generate a window to receive an instruction as to whether the distance is calculated by obtaining a shortest distance, a longest distance, and an average distance from the outline of the target area to each of positions within the target area.

2. The three-dimensional data generating apparatus according to claim 1 , wherein the point on the outline is a closest point on the outline to the corresponding position of the positions.

3. The three-dimensional data generating apparatus according to claim 1 , wherein the point on the outline is a furthest point on the outline from the corresponding position of the positions.

4. The three-dimensional data generating apparatus according to claim 1 , wherein a graph having a horizontal axis and a vertical axis is displayed, and a line that is drawn in the graph is obtained as the curve, one of the horizontal axis and the vertical axis representing the distance and another one of the horizontal axis and the vertical axis representing the height.

5. The three-dimensional data generating apparatus according to claim 4 , wherein input of a maximum value on an axis that represents the distance in the graph is received, and a height at a point whose distance from the outline exceeds the maximum value within the target area is set to the maximum value on the axis.

6. The three-dimensional data generating apparatus according to claim 4 , wherein distances from a plurality of points on the outline of the target area to each of the positions within the target area are calculated, and a maximum distance of the calculated distances is set to a maximum value on an axis that represents the distance in the graph.

7. The three-dimensional data generating apparatus according to claim 1 , wherein the processor is further configured to receive a plurality of heights for a plurality of distances, said plurality of heights being determined by a user of the three-dimensional data generating apparatus by moving up and down any points on a default straight line.

8. The three-dimensional data generating apparatus according to claim 1 , wherein the height decreases at least once before the distance reaches the maximum value.

9. A non-transitory recording medium storing a program for causing a computer to execute a process comprising:
receiving input of a curve indicating a relationship between a height and a distance starting from an outline of a target area to each of positions within the target area, a three-dimensional shape of the target area being generated from a two-dimensional image;
calculating the height at each of the positions within the target area in accordance with the distance, the distance being calculated from a point on the outline to a corresponding position of the positions, and generating data representing the three-dimensional shape of the target area based on the calculated height, and
generating a window to receive an instruction as to whether the distance is calculated by obtaining a shortest distance, a longest distance, and an average distance from the outline of the target area to each of positions within the target area.

10. A three-dimensional data generating method comprising:
receiving input of a curve indicating a relationship between a height and a distance starting from an outline of a target area to each of positions within the target area, a three-dimensional shape of the target area being generated from a two-dimensional image;
calculating the height at each of the positions within the target area in accordance with the distance, the distance being calculated from a point on the outline to a corresponding position of the positions, and generating data representing the three-dimensional shape of the target area based on the calculated height, and
generating a window to receive an instruction as to whether the distance is calculated by obtaining a shortest distance, a longest distance, and an average distance from the outline of the target area to each of positions within the target area.

Assignees

• Hatanaka Shinichi
• Ricoh Co Ltd

Inventors

• Hatanaka Shinichi

Classifications

• G06T11/26

  Drawing of charts or graphs · CPC title

• G05B2219/35134

  3-D cad-cam · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title

• G05B19/4099 Primary

  Surface or curve machining, making three-dimensional [3D] objects, e.g. desktop manufacturing · CPC title

• G05B2219/49007

  Making, forming 3-D object, model, surface · CPC title