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Welcome to the Cardiff Conversation Database (CCDb) web site

The Cardiff Conversation Database (CCDb) is an ongoing project, that provides a non-scripted, audio-visual natural conversation database where neither participant's role is predefined (i.e. speaker/listener). This database will be a useful resource for the computer vision, affective computing, and cognitive science communities to both analyse natural dyadic conversational data and develop conversation models.

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Sample screen grabs of the data

The data has been captured in both 2D and 3D.

The original CCDb capture (for which 2D data only is currently released) is described in the following paper:

A.J. Aubrey, D. Marshall, P.L. Rosin, J. Vandeventer, D.W. Cunningham, C. Wallraven, "Cardiff Conversation Database (CCDb): A Database of Natural Dyadic Conversations", V & L Net Workshop on Language for Vision, 2013.

The subsequent CCDb capture (for which the 2D and 3D data are available) is described in the following paper:

J. Vandeventer, A.J. Aubrey, P.L. Rosin, D. Marshall, "4D Cardiff Conversation Database (4D CCDb): A 4D Database of Natural, Dyadic Conversations", Joint Conf. on Facial Analysis, Animation and Auditory-Visual Speech Processing, 2015.

Want to help?

To annotate the whole database requires a massive effort, and is time consuming. Therefore, the community’s assistance is sought to help complete the task of annotating and validating the remaining conversations. Please contact Professor David Marshall or Professor Paul Rosin if you would like to help.

Accessing the data

To access the content of the CCDb you will need a user account. Use this form to request an account.

When you complete this form, we will send you an End User Licence Agreement (EULA). This EULA must be signed and returend by email to

We aim to activate all accounts as soon as possible and will send you details by email.

In case you wish to see the EULA before you sign up, or there is a problem with the email we send you, here is the CCDb EULA.