Mar 1, 1995 · According to our contrast detection model of human vision the modulation transfer function (P~TF) of the neural visual pathways squared is directly proportional to the critical retinal illuminance.

The Modulation Transfer Function of the human visual system has been determined with a sin usoidal test target, by measuring the threshold contrast as a function of spatial frequency, for monochromatic light of constant average luminace.

Here, we applied the external noise paradigm and the perceptual template model (PTM) to separate contributions of the various factors to the CSF and extract the MTF of the visual system.

The Modulation Transfer Function (MTF) is a very important method of measuring the resolving power of an imaging system. An imaging system is presented with a modulation pattern like the one at the bottom of Figure 2, and then the contrast of the captured image is measured.

The MTF curve plots the contrast in the image of a sine-wave target as a function of spatial frequency. It applies to a particular image point and target orientation (Tangential or Radial).

Modulation transfer function (MTF) is one of the most important parameters by which image quality is measured. Optical designers and engineers frequently refer to MTF data, especially in applications where success or failure is contingent on how …

Jan 1, 1982 · Comparisons with scalp potentials provided evidence that the evoked field was associated with intracellular currents. Its modulation transfer functions were similar to the analogous functions for the scalp potential and the detection of a grating.

Jun 1, 2001 · To determine the spatial modulation transfer function (MTF) of the human foveal visual system for equiluminous chromatic gratings we measured contrast sensitivity as a function of retinal illuminance for spatial frequencies of 0.125–4 c/deg with equiluminous red–green and blue–yellow gratings.

According to our contrast detection model of human vision the modulation transfer function (PMTF) of the neural visual pathways squared is directly proportional to the critical retinal illuminance. On this basis our result means that PMTF is similar, i.e. equal to spatial frequency across the visual field, thus attenuating low spatial ...

Abstract : The observed patterns over the scalp of magnetic fields evoked by visual, somatic, and auditory stimuli are analyzed to deduce the position and depth of the equivalent current dipole … Expand