Information processing device, information processing method, and information processing system
The present disclosure relates to an information processing device, an information processing method, and an information processing system capable of achieving simpler camera calibration. A control unit generates, in a case where calibration is required for a camera of a mobile unit, a first trigger for displaying a pattern imaged by the camera on a mobile terminal, and generates a second trigger for presenting feedback to a user according to whether or not appropriate imaging of the pattern by the camera is possible. The technology according to the present disclosure can be applied to, for example, a mobile unit such as a drone or a mobile terminal such as a smartphone.
1 . A mobile terminal comprising:
a communication circuit; and
a control circuit configured to:
in a case where calibration is required for a camera of a holdable mobile device, generate a first trigger that instructs the mobile terminal to display a pattern to be imaged by the camera of the holdable mobile device on the mobile terminal, separate from and spaced apart from the holdable mobile device,
receive, via the communication circuit, an image of the displayed pattern captured by the camera of the holdable mobile device;
determine, based on the received image, whether or not appropriate imaging of the pattern is possible, and
generate a second trigger that instructs the mobile terminal to present feedback to a user of the mobile terminal according to whether or not appropriate imaging of the pattern displayed on the mobile terminal by the camera of the holdable mobile device is possible, the feedback including an indication to the user that a user initiated imaging will generate an appropriate image.
2 . The mobile terminal according to claim 1 , wherein
the control circuit is configured to generate the first trigger when an outer shape of the mobile terminal is detected.
3 . The mobile terminal according to claim 1 , wherein
the pattern is a circle grid.
4 . The mobile terminal according to claim 3 , wherein
the circle grid is a circular symmetrical pattern or a circular asymmetrical pattern.
5 . The mobile terminal according to claim 1 , wherein
the pattern is a chessboard.
6 . The mobile terminal according to claim 1 , wherein
the pattern is formed by periodically arranging figures of different sizes.
7 . The mobile terminal according to claim 1 , wherein
the pattern is formed by periodically arranging figures having different shapes.
8 . The mobile terminal according to claim 1 , wherein
the control circuit is configured to change a shape of an entirety of the pattern in which figures are periodically arranged.
9 . The mobile terminal according to claim 1 , wherein
the control circuit is configured to change a size of an entirety of the pattern according to a distance between the camera and the mobile terminal.
10 . The mobile terminal according to claim 1 , wherein
the control circuit is configured to change a color of an entirety of the pattern.
11 . The mobile terminal according to claim 1 , wherein
the feedback is presented by at least one of vibration or sound in the mobile terminal.
12 . The mobile terminal according to claim 1 , wherein
the control circuit is configured to control imaging for the calibration by the camera in a case where appropriate imaging of the pattern by the camera is possible.
13 . The mobile terminal according to claim 12 , wherein
the control circuit is configured to set at least one of a shutter speed or a diaphragm value of a lens of the camera on a basis of sensor data acquired in the mobile terminal.
14 . The mobile terminal according to claim 13 , wherein
the sensor data is acquired by at least one of an acceleration sensor or a gyro sensor.
15 . The mobile terminal according to claim 1 , wherein
the control circuit is configured to generate a third trigger for presenting guidance for notifying the user of the camera that is a target of the calibration.
16 . The mobile terminal according to claim 15 , wherein
the guidance is presented by at least one of vibration or sound in the mobile terminal according to a distance between the camera that is a target of the calibration and the mobile terminal.
17 . The mobile terminal according to claim 15 , wherein
the guidance indicates, on the mobile terminal, a direction in which the camera that is a target of the calibration exists.
18 . The mobile terminal according to claim 15 , wherein
the guidance is presented by light emission of a light source in the camera that is a target of the calibration.
19 . An information processing method comprising
by a mobile terminal,
generating, in a case where calibration is required for a camera of a holdable mobile device, a first trigger that instructs the mobile terminal to display a pattern to be imaged by the camera of the holdable mobile device on the mobile terminal, separate from and spaced apart from the holdable mobile device,
receiving an image of the displayed pattern captured by the camera of the holdable mobile device,
determining, based on the received image, whether or not appropriate imaging of the pattern is possible, and
generating a second trigger that instructs the mobile terminal to present feedback to a user of the mobile terminal according to whether or not appropriate imaging of the pattern by the camera of the holdable mobile device is possible, the feedback including an indication to the user that a user initiated imaging will generate an appropriate image.
20 . An information processing system comprising:
a holdable mobile device including a camera;
a mobile terminal, separate from and spaced apart from the holdable mobile device, wherein the mobile terminal is configured to display a pattern to be imaged by the camera of the holdable mobile device; and
control circuitry configured to generate in a case where calibration is required for the camera of the holdable mobile device, a first trigger that instructs the mobile terminal to display the pattern;
determine, based on an image of the displayed pattern captured by the camera and transmitted from the holdable mobile device, whether or not appropriate imaging of the pattern is possible; and
a second trigger that instructs the mobile terminal to present feedback to a user of the mobile terminal according to whether or not appropriate imaging of the pattern by the camera of the holdable mobile device is possible, the feedback including an indication to the user that a user initiated imaging will generate an appropriate image.