U Tulunay-Keesey,R M Jones
U Tulunay-Keesey
Recently, it has been argued that the precision of image stabilization is reflected in the magnitude of the differences in contrast sensitivity measures obtained with and without image stabilization. Here we present two sets of data, one sh...
S Marcelja
S Marcelja
On the basis of measured receptive field profiles and spatial frequency tuning characteristics of simple cortical cells, it can be concluded that the representation of an image in the visual cortex must involve both spatial and spatial freq...
D H Kelly,C A Burbeck
D H Kelly
It has been suggested that local variations of retinal sensitivity may be responsible for elevating the threshold in pattern-adaptation experiments of the Blakemore-Campbell type. Subjects are unable to scan high-contrast gratings uniformly...
J P Carroll
J P Carroll
Several implication of Metcalf's apodization model of the Stiles-Crawford effect are presented in this paper. Metcalf showed that there should be a slight smearing of the point-spread function due to the Stiles-Crawford effect. It will be s...
S M Luria
S M Luria
Correction for empty-field myopia produces an appreciable improvement in contrast thresholds only for small (less than about 8 min arc) stimuli. The amount of improvement that can be expected varies with the magnitude of the observer's myop...
C A Burbeck,D H Kelly
C A Burbeck
The stabilized spatiotemporal threshold response surface can be modeled as the linear difference between the threshold response surfaces of two mechanisms, each of which is simply the product of a spatial and temporal frequency response cur...
Influence of the target size on the deterction threshold for luminance and chromaticity contrast [0.03%]
C Noorlander,M G Heuts,J J Koenderink
C Noorlander
The effect of the target size on the detecton of luminance and chromaticity flicker and gratings was studied. Discrimination ellipses in a luminance-chromaticity plane were determined with square test areas subtending from 1/4 degree to 1 d...