Stream Plugin

Plugin for real-time streaming of image and tracking data. More...

Collaboration diagram for Stream Plugin:

Detailed Description

Plugin for real-time streaming of image and tracking data.

Overview

The ImFusion Stream API allows for streaming image and/or tracking data into the ImFusion framework in real time. It extends the general software architecture of the ImFusion SDK with the following building blocks:

• The Stream class, which inherits from Data and can thus be part of the data model. It serves as both interface to configure and visualize (when part of the data model) a live stream input.
• The StreamData interface, which carries the payload for each sample and is passed to listeners via the Stream::signalStreamData signal. If needed, custom streams can attach DataComponent API in order to encode custom information.

Overview class diagram of the ImFusion streaming architecture.

Display of Image Streams

Even though an ImageStream inherits from Data, it can not be visualized directly in the Visualization framework. This is due to the fact that a stream's image data is not directly attached to the Stream but only accessible through the Stream::signalStreamData signal.

In order to show the contents of an ImageStream in a view, use ImageStreamCache to create a proxy StreamSharedImageSet that will be updated with the images received from the stream. This proxy StreamSharedImageSet is automatically added to the views via the ImageStreamDisplayHandler.

It is possible to directly access the ImageStreamCache singleton, for instance to check if main window events like onVisibleDataChanged() refer to a Stream.

Topics
	Instantiating Streams in ImFusion Suite
	Utilities to make Streams available in the ImFusion Suite.
	Network Communication
	Network communication functionality.
	Recording
	Generic Recording and Playback of Streams.
	Streams and StreamData
	Fundamental classes for streaming data.

Classes
class	ImageStreamCache
	A singleton class for caching the output of an ImageStream in a SharedImageSet. More...
class	StreamSharedImageSet
	Wrapper around a streamed SharedImageSet. More...
class	InstrumentCalibrationDataComponent
	Data component representing the calibration matrix for a set of instruments. More...
class	PlaybackStream
	Image-based stream created from the playback of an image set. More...
class	StreamAlgorithmExecutor
	Generic algorithm that allows the execution of arbitrary algorithms on each image coming in through an image stream. More...
class	AlgorithmExecutorStream
	Image stream helper class used as output of the StreamAlgorithmExecutor class. More...
class	VideoFileStream
	Stream images from a video file. More...