Image Processing Reference
In-Depth Information
Fig. 10.1 Keystone
distortion
Vertical
Parallax
Left
Image
Right
Image
Table 10.1 Studies on the detection and tolerance limits of the geometric discrepancy on left and
right views [
24
]
Geometric
discrepancy
Detection
limit
Tolerance
limit
Remark
Size
1.2 %
2.9 %
Taking the size of one image as 100 %
Vertical
displacement
0.7 %
1.5 %
Taking the image height as 100 %
0.5
1.1
Rotation
Angle of rotation about the image
center
visual comfort threshold values are higher when increasing the luminance and color
temperature differences between two views, (2) decreasing the binocular differ-
ences on contrast or hue to zero will result in low threshold values on visual
discomfort, which indicates this type of differences easily inducing binocular
rivalry, and (3) luminance adaptation and chromaticity adaptation play an important
role on the variations of visual comfort thresholds.
10.2.3.3 Crosstalk
Crosstalk, or image ghosting, in stereoscopic displays refers to imperfect image
separations where the left-eye view leaks to the right-eye view and vice versa.
Crosstalk can be classified into system crosstalk and viewer crosstalk. System
crosstalk is only induced by the display technology, and it is independent of the
quality of stereoscopic image pairs while the viewer crosstalk is dependent on the
video contents, for example displaying high contrast edges with non-zero disparity.
Studies showed that visibility of crosstalk increases with increasing contrast and
increasing binocular disparity (depth) of the stereoscopic image [
26
]. Even a small
amount of crosstalk would induce visual discomfort or visual fatigue [
19
]. Studies on
the thresholds of crosstalk level for the acceptance of the viewing experience and
visual discomfort have been conducted. In [
27
], they found that “crosstalk between
