ImageSubscriber QML Type

Subscribes to sensor_msgs::msg::Image messages — This message contains an uncompressed image (0, 0) is at top-left corner of image. More...

• List of all members, including inherited members

Properties

• data : ArrayBuffer
• encoding : string
• header : header
• height : uint32_t
• isBigendian : uint8_t
• message : image
• step : uint32_t
• width : uint32_t

Signals

• messageReceived(image msg)

Detailed Description

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

See also ImagePublisher and image.

Property Documentation

data : ArrayBuffer

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

encoding : string

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

header : header

The header field of the last received message. Updated whenever a new message arrives. headerChanged 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.

isBigendian : uint8_t

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

message : image

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

step : uint32_t

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

width : uint32_t

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

Signal Documentation

messageReceived(image msg)

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