An Image-Based Model for Early Visual Processing

An Image-Based Model for Early Visual Processing

Figure 2: Contrast discrimination. Increment threshold vs. pedestal contrast for gratigs of 8.37 cyc/deg and 1497ms presentation time. Early spatial vision was explored extensively over several decades in many psychophysical detection and discrimination experiments. Thus a large body of such data is available. Goris et al. (2013) integrated this psychophysical literature and proposed a model ba...

Model Based Image Processing

An Ontology-Based Model for Representing Image Processing Application Objectives

This paper investigates what kinds of information are necessary and sufficient to design and evaluate image processing software programs and proposes a representation of these information elements using a computational language performable by vision systems and understandable by experts. The language is built upon a formulation model which distinguishes the specification of a goal and the defin...

A Model of Early Visual Processing

We propose a model for early visual processing in primates. The model consists of a population of linear spatial filters which interact through non-linear excitatory and inhibitory pooling. Statistical estimation theory is then used to derive human psychophysical thresholds from the responses of the entire population of units. The model is able to reproduce human thresholds for contrast and ori...

A silicon model of early visual processing

Mally of the most striking phenomena known from perceptual psychology are a direct result of the first levels of neural processing. In the visual systems of higher animals, the well-known center-surround response to local stimuli is responsible for some of the strongest visual illusions. For example, Mach bands, the Hermann-Hering grid illusion, and the Craik-O'Brian-Comsweet illusion can all b...