INFORMATION PROCESSING APPARATUS AND NON-TRANSITORY COMPUTER READABLE MEDIUM

1 . An information processing apparatus comprising:

a processor configured to

detect a command for a thickness or a density of a line or a group of lines being rendered while a user is rendering the line or the group of lines in midair by using a gesture, and

store the detected thickness or the detected density in association with a trajectory.

2 . The information processing apparatus according to claim 1 , wherein the processor is configured to detect a command for a direction of the line being rendered while the line or the group of lines is being rendered.

3 . The information processing apparatus according to claim 2 , wherein the processor is configured to detect movement of the user giving the command for the thickness or the density of the line from a captured image of the user performing the rendering.

4 . The information processing apparatus according to claim 3 , wherein the processor is configured to detect, from the image, a specific motion appearing in a hand used for the rendering.

5 . The information processing apparatus according to claim 4 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with an orientation of a finger used for rendering the line, the orientation of the finger being detected from the image.

6 . The information processing apparatus according to claim 1 , wherein the processor is configured to

detect a feature appearing at a tip of a physical object used for the rendering, and

determine the thickness or the density of the line or the group of lines in accordance with the detected feature.

7 . The information processing apparatus according to claim 6 , wherein the feature is a structure, an image, text, a shape, a color, or a combination thereof for designating the thickness or the density of the line or the group of lines, and wherein the thickness or the density of the line or the group of lines is determined in accordance with the feature detected during the rendering.

8 . The information processing apparatus according to claim 1 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with a specific motion appearing at a hand not used for rendering the line or the group of lines, the specific motion being detected from a captured image of the user performing the rendering.

9 . The information processing apparatus according to claim 8 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with an orientation of an area of a body not used for rendering the line or the group of lines.

10 . The information processing apparatus according to claim 1 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with a distance to a hand used for the rendering in front of the user.

11 . The information processing apparatus according to claim 1 , wherein the processor is configured to

detect a position of a hand not used for rendering the line or the group of lines as a reference position in a depth direction, and

determine the thickness or the density of the line or the group of lines in accordance with a positional relationship that a physical object used for the rendering has with the reference position in the depth direction.

12 . The information processing apparatus according to claim 1 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with information detected by a device worn on a hand used for the rendering.

13 . The information processing apparatus according to claim 1 , wherein the processor is configured to detect a specific motion as the command for the thickness or the density of the line or the group of lines, the specific motion being detected from a captured image of the user performing the rendering and appearing at a physical object used for the rendering.

14 . The information processing apparatus according to claim 13 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with an orientation of the physical object detected from the image.

15 . The information processing apparatus according to claim 13 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with information detected by a device worn on a hand used for the rendering by the physical object.

16 . The information processing apparatus according to claim 1 , wherein the processor is configured to detect movement of the user giving the command for the thickness or the density of the line or the group of lines based on information detected by a sensor of a rod-shaped physical object used for the rendering.

17 . The information processing apparatus according to claim 16 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with pressure detected by the sensor.

18 . The information processing apparatus according to claim 17 , wherein the processor is configured to detect the thickness or the density in accordance with pressure from a specific direction.

19 . The information processing apparatus according to claim 16 , wherein the processor is configured to determine the thickness or the density of the line or the group of lines in accordance with acceleration detected by the sensor.

20 . A non-transitory computer readable medium storing a program causing a computer to execute a process for processing information, the process comprising:

detecting a command for a thickness or a density of a line or a group of lines being rendered while a user is rendering the line or the group of lines in midair by using a gesture; and

storing the detected thickness or the detected density in association with a trajectory.