CESIA (introduction) JosĂŠ Luis CAIVANO caivano@fadu.uba.ar
University of Buenos Aires and National Council for Research Argentine Color Group
MODES OF APPEARANCE OF COLOR (Optical Society of America)
Atributes 1. Lightness 2. Hue 3. Saturation
COLOR
4. Size 5. Shape 6. Location
spatial aspects: FORM
7. Flicker 8. Sparkle
temporal variations of light
9. Transparency 10. Glossiness 11. Luster
CESIA
Maitland Graves
Arthur Pope
1. 2. 3. 4. 5. 6. 7.
3 spatial factors position size shape
line direction shape size texture value color
3 tonal factors value hue intensity
Bruno Munari
Other authors
visual support 1. texture 2. shape 3. structure 4. module 5. motion [多and color?
2 inclusive categories
Sven Hesselgren
Our classification
1. 2. 3. 4.
1. 2. 3. 4. 5.
form color light texture
form color
spatial form visual texture color cesia motion
colors
spatial forms
textures
cesias
Three types of objects in the world:
emisive
reflective
transmissive
Reflective and transmissive objects are two forms of absorbent objects.
The stimulus for color can be produced by primary sources (objects that emit light) or by secondary sources (objects that reflect or transmit the light coming from another source).
secondary sources
primary sources
From the physical point of view, an object may absorb light, and the non-absorbed portion can be either reflected by the material, or transmitted trough it. Both reflection and transmission may occur regularly (specularly) or diffusely.
diffuse reflection (matte)
absorption (dark or black) diffuse transmission (traslucent)
regular reflection (mirrorlike) regular transmission (transparent)
The three variables of cesia —darkness, permeability, diffusivity— with the two extremes (100% and 0%) and an intermediate case (50%).
Permeability 100%
Permeability 0%
Permeability
Permeability 50%
Association Internationale de la Couleur International Color Association Internationale Vereinigung f端r die Farbe
www.aic-color.org