Lam, RobertoRodrigues, J. M. F.du Buf, J. M. H.2009-02-132009-02-13200614th International Conference in Central Europe on Computer Graphics, Vizualition and Computer Vision (WSCG 2006). - Plzen, 30 January - 3 February 2006. - p. 147 - 154http://hdl.handle.net/10400.1/123In this paper we present a brief overview of the processing in the primary visual cortex, the multi-scale line/edge and keypoint representations, and a model of brightness perception. This model, which is being extended from 1D to 2D, is based on a symbolic line and edge interpretation: lines are represented by scaled Gaussians and edges by scaled, Gaussian-windowed error functions. We show that this model, in combination with standard techniques from graphics, provides a very fertile basis for non-photorealistic image rendering.engVisão computorizadaCórtex visualPerceptionModelsMulti-scale representationsBrightnessFocus-of-attentionNon-photorealistic renderingjournal article