KEY FEATURES:

• 400 subjects (185 female, 215 male)
  
• 1240 videos of spontaneous/posed smiles (597 spontaneous and 643 posed)
  
• Age variation from 8 to 76 years
  
• RGB videos recorded with a resolution of 1920×1080 pixels at a rate of 50 frames per second
  
• Controlled illumination
  
• Color chart on the background for further illumination and color normalization
  

DATA ACQUISITION:

• For posed (deliberate) smiles, each subject was asked to pose a smile as realistically as possible.
  
• Short, funny video segments were used to elicit spontaneous smiles.
  
• Approximately five minutes of recordings were made per subject, and genuine smiles were segmented.
  
• For each subject, a balanced number of spontaneous and posed smiles were selected and annotated by seeking consensus of two trained annotators.
  
• Each segment starts and ends with neutral or near-neutral expressions.