9. CONFIGURATION
Consistency check: If enabled, stereo matching is performed in both match-
ing directions, left-to-right and right-to-left. Pixels for which the dispar-
ity is not consistent are marked as invalid. The sensitivity of the consis-
tency check can be controlled through the `consistency check sensitivity'
slider.
Uniqueness check: If enabled, pixels in the disparity map are marked as
invalid if there is no suciently unique solution (i.e. the cost function
does not have a global minimum that is signicantly lower than all other
local minima). The sensitivity of the uniqueness check can be controlled
through the `uniqueness check sensitivity' slider.
Texture lter: If enabled, pixels that belong to image regions with little
texture are marked as invalid in the disparity map, as there is a high
likelihood that these pixels are mismatched. The sensitivity of this lter
can be adjusted through the `texture lter sensitivity' slider.
Gap interpolation: If enabled, small patches of invalid disparities, which are
caused by one of the preceding lters, are lled through interpolation.
Noise reduction: If enabled, an image lter is applied to the disparity map,
which reduces noise and removes outliers.
Speckle lter iterations: Marks small isolated patches of similar disparity
as invalid. Such speckles are often the result of erroneous matches. The
number of iterations specify how aggressive the lter will be with remov-
ing speckles. A value of 0 disables the lter.
9.4 Cameras
9.4.1 Camera Selection
The cameras page that is shown in Figure 15 allows for the selection of a
desired camera pair and the adjustment of their respective parameters. All
detected cameras are listed in the `camera selection' list. A source is listed for
each camera, which identies the utilized camera driver. The cameras list also
includes the two virtual camera pairs that are mentioned in Section 7.6, which
provide an example stereo sequence or facilitate the reception of input images
through ethernet.
To choose a particular camera, you have to tick either the `use as left' or
`use as right' radio button, for selecting the camera as the left or right camera
of the stereo pair. Please note that cameras of dierent sources cannot be used
together.
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