RegionOfInterestSubscriber QML Type

Subscribes to sensor_msgs::msg::RegionOfInterest messages — This message is used to specify a region of interest within an image. More...

• List of all members, including inherited members

Properties

• doRectify : bool
• height : uint32_t
• message : regionOfInterest
• width : uint32_t
• xOffset : uint32_t
• yOffset : uint32_t

Signals

• messageReceived(regionOfInterest msg)

Detailed Description

When used to specify the ROI setting of the camera when the image was taken, the height and width fields should either match the height and width fields for the associated image; or height = width = 0 indicates that the full resolution image was captured.

RegionOfInterestSubscriber receives regionOfInterest values from a ROS 2 topic. Set the topic and node properties, then connect to the messageReceived() signal.

See also RegionOfInterestPublisher and regionOfInterest.

Property Documentation

doRectify : bool

The doRectify field of the last received message. Updated whenever a new message arrives. doRectifyChanged is emitted on every update.

height : uint32_t

The height field of the last received message. Updated whenever a new message arrives. heightChanged is emitted on every update.

message : regionOfInterest

The last message received on topic. Updated whenever a new message arrives.

width : uint32_t

The width field of the last received message. Updated whenever a new message arrives. widthChanged is emitted on every update.

xOffset : uint32_t

The xOffset field of the last received message. Updated whenever a new message arrives. xOffsetChanged is emitted on every update.

yOffset : uint32_t

The yOffset field of the last received message. Updated whenever a new message arrives. yOffsetChanged is emitted on every update.

Signal Documentation

messageReceived(regionOfInterest msg)

Emitted when a new regionOfInterest arrives on topic. msg contains the received value.