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Package Summary

This package provides visualization logic for ism data, e.g. visualization with marker in rviz.

  • Maintainer: Meißner Pascal <asr-ros AT lists.kit DOT edu>
  • Author: Hanselmann Fabian, Heller Florian, Heizmann Heinrich, Kübler Marcel, Meißner Pascal, Reckling Reno, Stöckle Patrick, Trautmann Jeremias
  • License: BSD
  • Source: git https://github.com/asr-ros/asr_ism_visualizations.git (branch: master)

Package Summary

This package provides visualization logic for ism data, e.g. visualization with marker in rviz.

  • Maintainer: Meißner Pascal <asr-ros AT lists.kit DOT edu>
  • Author: Hanselmann Fabian, Heller Florian, Heizmann Heinrich, Kübler Marcel, Meißner Pascal, Reckling Reno, Stöckle Patrick, Trautmann Jeremias
  • License: BSD
  • Source: git https://github.com/asr-ros/asr_ism_visualizations.git (branch: master)

Logo-white-medium.jpg

Description

This package provides visualization logic for ISM data, e.g. visualization with markers in RVIZ.

ism_visualization.pdf:

ism_visualization.png

Functionality

The asr_ism_visualizations package contains several classes for visualization of the ISM-datastructures. There are visualizations for the ISM itself, the pose prediction, the voting space, as well as for the reconstruction of the scene and basic visualizations of objects and object-overlays in RVIZ. It doesn't contain any nodes and its more like a library.

The separated visualization components are described now:

Recognition Result Visualization

besteck3.png

The recognition result visualization generates markers for the visualization of the scene-recognition result and visualizes an ISM tree. Due to the different structures of the recognition results (e. g. caused by different training methods), different visualization components are needed.

An object is represented by a cube with a pyramid and optionally a miniature-version of the object itself. The cube is colored in the color of the ISM and the pyramid is colored in a range from green to red displaying how good the current object pose matches in the object constellation. In addition the Pyramid points to the ISM, the object is part of.

objectMarker.png

An ISM is visualized by a sphere and a cone. The colors of them are chosen similar to the pyramids and represents the confidence of the ISM. The cone points to its parent-ISM. If the ISM is the root-ISM, the size of the sphere is doubled and it has no cone (cause there is no parent to point to). Object- and ISM-Markers are connected through lines colored in the color of the ISM.

ismMarker.png

There are several parameters to configure the recognition result visualization:

Pose Prediction Visualization

The poseprediction visualization can be used for visualization of missing objects or for the reconstruction of a scene.

konzept_pp_1.png

Due to many possible object poses for each missing object, the pose prediction returns an attributed point cloud with some reasonable object poses. Each pose is visualized with an oriented arrow, which encodes position and orientation with a frame on its ending. All poses belonging to one object are colored with the same hue value. The prediction always starts form the reference of an ISM.

coordinateArrow.png

Additionally, the user can choose a concrete object and a predicted pose e. g. for placing the real object like the predicted pose. Therefore, the object has to be detected via object recognition with a camera. After choosing the desired pose a marker is drawn which shows the difference and deviation in all 6 dimensions. The color is ranged from red to green and encodes the derivation relatively, with green being very close to the predicted pose.

poseMarkerColored.png

There are also some parameters to set via dynamic reconfigure:

Valid Pose Visualization

The valid pose visualization is pretty similar to the pose prediction visualization. This visualization can be used to show randomly generated poses which are valid for an object. In addition a sphere is drawn to visualize the whole area in which an object has to be to be recognized as part of the current scene.

Valid_Position1.png Valid_Position2.png Valid_Position3.png

The markers are small spheres to show the position with cones visualizing the allowed derivation in orientation exemplarily for an axis (by default X-Axis of an object).

The following parameters can be used in dynamic reconfigure:

Voting space Visualization

The votes of an object are drawn as an "oriented arrow", which is basically a line with a coordinate frame. So position and orientation of the votes can be visualized as well as the object they belong to (the voter).

coordinateArrow.png

Each object has several votes which results in the votingspace. This space is subdivided in voxels, the so called bins. All votes to a bin are counted and visualized as a cube drawn in the center of all non-empty bins. The color shows the amount of votes relatively to the maximum number of votes in one bin. (green: maximum, red = 1, not drawn = 0)

eva_voting_cluster_2.png eva_voting_no_cluster_3.png

There are several parameters to set via dynamic reconfigure:

Usage

Normally this package is used by another package like asr_ism and provides no independent components.

Needed packages

Needed software

ROS Nodes

Subscribed Topics

Only topics of dynamic reconfigure are being subscribed to. (e. g. /recognizer/pose_prediction_visualizer/parameter_updates)

Published Topics

All generated markers of ISM-result-visualization, pose-prediction-visualization and voting-space-visualization are published (by default) on /ism_results_visualization (msg-Type: Markerarray)


2020-03-28 12:28