release version 05/2007

PlayCLC is a research demonstration of the CLC (Curves, Lines & Corners) model developed by Xiang Cao and Shumin Zhai. The CLC model is a quantitative model for predicting the production time of single-stroke pen gestures drawn by users. Using this tool, you can create and save samples of pen gestures, organized as gesture sets. The system can analyze the gesture and predict the production time according to the CLC model parameters provided by you.

In the Creating mode, you can create new gestures in the authoring panel. The elemental segments (curves or straight lines) of the gesture are added in sequence.

- To add a straight segment, click the starting and the ending position

- To add a curved segment, draw the curve using the cursor.

Disjoint segments are automatically connected by straight lines, and corners between straight lines are automatically detected.

Defined gestures can be reviewed in the Reviewing mode of the panel. You can use the various controls under the panel to navigate through and transform the gestures. You can also adjust the parameters of the model, the time prediction is updated accordingly.

For batch analysis, you can generate an analysis report (in text format) of all the gestures in the set, which can be then imported into statistical software of your choice.

If you have questions or suggestions, please contact Xiang Cao (caox@cs.toronto.edu) or Shumin Zhai (zhai@almaden.ibm.com). Thank you!