1. Greta MPEG-4 compliant Script based behaviour generator system: Script based behaviour generator system: input - BML or APML input - BML or APML output - MPEG-4 animation output - MPEG-4 animation realistic multimodal behaviour: uses gestures, gaze, head nodes, facial expressions, intonation, torso movements voice - external TTS Non-interactive University Paris 8

2. Interface 1. choose language 2. choose APML/BML file 4. generate animation 5. see it 3. choose espressivity values

3. Greta tools: BML Editor University Paris 8

4. BML behaviour mark-up language of SAIBA framework operates at signal level different channels of (non)verbal communication can be defined:  head movements  gaze  facial expressions  gestures  speech

5. BML head=head_down 1 1 affect=surprise 0

6. BML head=head_down 1 1 affect=surprise 0 expressivity parameters duration class and instance unique name

7. BML head=head_down 1 1 affect=surprise 0 expressivity parameters duration class and instance unique name

8. BML head=head_down 1 1 affect=surprise 0 expressivity parameters duration class and instance unique name

9. BML head=head_down 1 1 affect=surprise 0 expressivity parameters duration class and instance unique name

10. BML Editor Different communication channels can be used simultaneously Each signal is defined in a separate « block » Each block is defined by :  unique name  class and instance of a signal according to Poggi`s taxonomy  start and end time  five expressivity parameters

11. BML Editor: expressivity The expressivity parameters can be defined for each nonverbal signal:

12. BML Editor: Feedback Window « feedback widow » allows for an immediate visualisation of animation

13. Greta tools: Gesture Editor University Paris 8

14. Gesture Editor it is used to create and edit gestures it uses a graphical interface, hiding the gesture textual description STARTFRAME 0.2 FRAMETYPE stroke_start ARM XC YCC ZNear HAND form_fist WRIST FBAway PalmInwards ADDNOISE ENDFRAME STARTFRAME 0.2 FRAMETYPE stroke_start ARM XC YCC ZNear HAND form_fist WRIST FBAway PalmInwards ADDNOISE ENDFRAME

15. Gesture Editor It allows you to define: arm position hand shape hand and fingers orientation gesture phrases e.g.: stroke, hold hase

16. Gesture Editor Expressivity parameters can also be set for each gesture:

17. Gesture Editor Finally the gesture can be tested. The Greta agent performs it as it will be shown during animations: