ABOUT
AKDEF
The Averaged Karolinska Directed Emotional Faces
Lundqvist, D., & Litton, J. E. (1998). The Averaged Karolinska Directed Emotional Faces - AKDEF, CD ROM from Department of Clinical Neuroscience, Psychology section, Karolinska Institutet, ISBN 91-630-7164-9.
Summary
The Averaged Karolinska Directed Emotional Faces (AKDEF) is a set of totally 70 pictures of human facial expressions. The set of pictures contains an averaged female and an averaged male displaying 7 different emotional expressions. Each expression is viewed from 5 different angles.
Method
All pictures were first converted from 32 bit RGB color to 8 bit greyscale. They were then sorted into 70 different stacks (7 emotions * 5 angles * male/female), so that for example all 70 pictures (35 individuals * 2 series) of happy females in full left profile were in one stack. Average pictures were then created for each stack.
Equipment
Hardware: Macintosh 8500/120.
Software: GraphicConverter 3.2.1, NIH Image 1.6.
Details
Copyright: Psychology section, Department of Clinical Neuroscience,
Karolinska Institute, Stockholm, Sweden.
Number of pictures: 70.
Size: 562 * 762 pixels.
Resolution: 72*72 dpi.
Colors: 256 (8 bit greyscale).
Size inflated: approximately 420 kb.
Size compressed: approximately 32 kb.
File format: JPEG.
Compression quality: 94 %.
Codes:
Example: FAFFL.JPG
Letter 1: Gender
F = female
M = male
Letter 2 & 3: Experession
AF = afraid
AN = angry
DI = disgusted
HA = happy
NE = neutral
SA = sad
SU = surprised
Letter: Angle
FL = full left profile
HL = half left profile
S = straight
HR = half right profile
FR = full right profile)
Extension: Picture format
JPG = jpeg (Joint Photographic Experts Group)
