fiducial
[Interface specifications]
Detailed Description
Fiducial (marker) detection.The fiducial interface provides access to devices that detect coded fiducials (markers) placed in the environment. It can also be used for devices the detect natural landmarks.
| #define | PLAYER_FIDUCIAL_MAX_SAMPLES 32 |
| The maximum number of fiducials that can be detected at one time. | |
| #define | PLAYER_FIDUCIAL_DATA_SCAN 1 |
| Data subtype: detected fiducials. | |
| #define | PLAYER_FIDUCIAL_REQ_GET_GEOM 1 |
| Request/reply subtype: get geometry. | |
| #define | PLAYER_FIDUCIAL_REQ_GET_FOV 2 |
| Request/reply subtype: get field of view. | |
| #define | PLAYER_FIDUCIAL_REQ_SET_FOV 3 |
| Request/reply subtype: set field of view. | |
| #define | PLAYER_FIDUCIAL_REQ_GET_ID 7 |
| Request/reply subtype: get ID. | |
| #define | PLAYER_FIDUCIAL_REQ_SET_ID 8 |
| Request/reply subtype: set ID. | |
| typedef player_fiducial_item | player_fiducial_item_t |
| Info on a single detected fiducial. | |
| typedef player_fiducial_data | player_fiducial_data_t |
| Data: detected fiducials (PLAYER_FIDUCIAL_DATA_SCAN). | |
| typedef player_fiducial_geom | player_fiducial_geom_t |
| Request/reply: Get geometry. | |
| typedef player_fiducial_fov | player_fiducial_fov_t |
| Request/reply: Get/set sensor field of view. | |
| typedef player_fiducial_id | player_fiducial_id_t |
| Request/reply: Get/set fiducial ID. |
Typedef Documentation
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Data: detected fiducials (PLAYER_FIDUCIAL_DATA_SCAN). The fiducial data packet (all fiducials). |
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Request/reply: Get/set sensor field of view. The field of view of the fiducial device can be set using the PLAYER_FIDUCIAL_REQ_SET_FOV request (response will be null), and queried using a null PLAYER_FIDUCIAL_REQ_GET_FOV request. |
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Request/reply: Get geometry. The geometry (pose and size) of the fiducial device can be queried by sending a null PLAYER_FIDUCIAL_REQ_GET_GEOM request. |
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Request/reply: Get/set fiducial ID. Some fiducial finder devices display their own fiducial. Send a null PLAYER_FIDUCIAL_REQ_GET_ID request to get the identifier displayed by the fiducial. Some devices can dynamically change the identifier they display. Send a PLAYER_FIDUCIAL_REQ_SET_ID request to set the currently displayed value. Make the request with the player_fiducial_id_t structure. The device replies with the same structure with the id field set to the value it actually used. You should check this value, as the device may not be able to display the value you requested. Currently supported by the stg_fiducial driver. |
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Info on a single detected fiducial. The fiducial data packet contains a list of these. |