MLMarkerTrackerResult
Module: Fiducial Marker Tracking
Represents the result for a single marker. More...
#include <ml_marker_tracking.h>
Public Attributes
| Type | Name |
|---|---|
| MLMarkerTrackerDecodedData | decoded_data The data which was encoded in the marker. |
| MLMarkerTrackerDetectorType | detector_type The detector type that created this result. |
| bool | valid_pose This indicates if coord_frame_marker holds a valid pose. |
| MLCoordinateFrameUID | coord_frame_marker MLCoordinateFrameUID of the marker. |
| float | reprojection_err The reprojection error of this marker detection in meters. |
Detailed Description
struct MLMarkerTrackerResult;
Represents the result for a single marker.
A list of these detections will be returned by the Marker Tracker, after processing a camera frame succesfully.
Deprecated since 1.6.0. Scheduled for removal.
API Level:
- 20
Public Attributes Documentation
decoded_data
MLMarkerTrackerDecodedData decoded_data;
The data which was encoded in the marker.
| Type | Description |
|---|---|
| MLMarkerTrackerDecodedData | Represents the decoded data. |
detector_type
MLMarkerTrackerDetectorType detector_type;
The detector type that created this result.
| Type | Description |
|---|---|
| MLMarkerTrackerDetectorType | Represents the different detector types supported by the API. |
valid_pose
bool valid_pose;
This indicates if coord_frame_marker holds a valid pose.
If false do not use coord_frame_marker.
coord_frame_marker
MLCoordinateFrameUID coord_frame_marker;
MLCoordinateFrameUID of the marker.
When valid_pose is true, this can be passed to the MLSnapshotGetTransform() function to get the 6 DOF pose of the marker.
reprojection_err
float reprojection_err;
The reprojection error of this marker detection in meters.
A high reprojection error means that the estimated pose of the marker doesn't match well with the 2D detection on the processed video frame and thus the pose might be inaccurate. The error is given in meters, representing the displacement between real marker and its estimated pose. This means this is a normalized number, independent of marker distance or length.