Schlagwort: ‘AI’

Robot Cooking – Transferring observations into a planning language

October 18th, 2023 | by



Transferring observations into a planning language: An automated approach in the field of cooking

In the Robot Cooking project, an automated method is developed to analyze and identify motion data and convert it into a machine-readable planning language. This is done using a cooking scenario as an example in which the motion data is captured by recording the hand pose of the cook.

The recording is done using a motion capture system consisting of seven cameras and a glove with three markers on the back of the chef’s hand. The position of the markers is determined by triangulation. This provides enough information to derive the hand pose. The recording is done at 120 frames per second. Before the cooking process, all objects in the workspace are identified and their initial positions determined. Motion data is continuously recorded and converted into poses with time stamps. Additional information such as velocity, acceleration and angle in relation to the tabletop are derived from the raw data.

A initial structure of the dataset is created by finding the side actions using classification. Here, pick, move and place are identified as recurrent side actions. A separate training dataset is used to train a classifier that recognizes these actions. This enables an easier analysis of the remaining actions.

Clustering is applied to identify unknown actions. A dynamic approach allows analysis despite high variability in execution. A unique fingerprint for each action is found, based on the orientation of the back of the hand and its speed on the table plane, to assign each frame to a cluster and finally to an action.

The knowledge gained from classification and clustering is translated into a machine-readable Planning Domain Definition Language (PDDL). A schedule is created, with known actions directly assigned. Start and end positions are specified, and virtual object tracking is used to represent the progression of objects during cooking. For unknown actions, preconditions and effects are handled dynamically. The results are translated into a machine-readable PDDL. This formal representation enables efficient automatic scheduling and execution of the previously demonstrated cooking task.

Additional information is available in the video linked above, the poster and the paper.

Markus Schmitz



AI task scheduling explained

November 2nd, 2021 | by

Artificial Intelligence task scheduling explained using an industry scenario.

Dieses Video auf YouTube ansehen.
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The Automated Task Planning is intended to support the use of robots in flexible environments.
Traditional robot programming as a sub-area of work preparation processes poses great challenges to individual productions with small quantities. Automated Task Planning promises to address the problems.
In the video, in addition to the introduction and classification of Automated Task Planning, the steps required for its implementation and the benefits that result from its use are presented.
The concept was validated during research at IGMR using a simulation, which is used in the examples in the video.


Contact person:

Prof. Mathias Hüsing