TextAnnotation
A text label on a 2D image.
Parent schema
TextAnnotation appears in the ImageAnnotations message schema.
Schema
| Field | Type | Description |
|---|---|---|
timestamp | time | Timestamp of annotation. |
position | Point2 | Bottom-left origin of the text label in 2D image coordinates (pixels). |
text | string | Text to display. |
font_size | float64 | Font size in pixels. |
text_color | Color | Text color. |
background_color | Color | Background fill color. |
Position
The coordinate uses the top-left corner of the top-left pixel of the image as the origin.
Reference implementations
Foxglove schemas are framework-agnostic and can be implemented using any supported message encoding:
| Encoding | Schema |
|---|---|
| ROS 1 | foxglove_msgs/TextAnnotation |
| ROS 2 | foxglove_msgs/msg/TextAnnotation |
| JSON | foxglove.TextAnnotation |
| Protobuf | foxglove.TextAnnotation |
| FlatBuffers | foxglove.TextAnnotation |
| OMG IDL | foxglove::TextAnnotation |