TY  - JOUR
AU  - Xavier Otazu
AU  - C. Alejandro Parraga
AU  - Maria Vanrell
PY  - 2010//
TI  - Towards a unified chromatic inducction model
T2  - VSS
JO  - Journal of Vision
SP  - 1
EP  - 24
VL  - 10
IS  - 12:5
KW  - Visual system
KW  - Color induction
KW  - Wavelet transform
N2  - In a previous work (X. Otazu, M. Vanrell, & C. A. Párraga, 2008b), we showed how several brightness induction effects can be predicted using a simple multiresolution wavelet model (BIWaM). Here we present a new model for chromatic induction processes (termed Chromatic Induction Wavelet Model or CIWaM), which is also implemented on a multiresolution framework and based on similar assumptions related to the spatial frequency and the contrast surround energy of the stimulus. The CIWaM can be interpreted as a very simple extension of the BIWaM to the chromatic channels, which in our case are defined in the MacLeod-Boynton (lsY) color space. This new model allows us to unify both chromatic assimilation and chromatic contrast effects in a single mathematical formulation. The predictions of the CIWaM were tested by means of several color and brightness induction experiments, which showed an acceptable agreement between model predictions and psychophysical data.
UR  - http://www.journalofvision.org/content/10/12/5.full
UR  - http://dx.doi.org/10.1167/10.12.5
N1  - CIC
ID  - Xavier Otazu2010
ER  -