Two input images in the order: 1. Left stereo image. 2. Right stereo image.
Two Output disparity images in the order: 1. Line disparity. 2. Sample disparity.
nlw= The line length of the template kernel.
The template is the area selected from the left image and correlated
over the right image search area.
The template is only moved horizontally.
Must be an odd integer.
Defaults to 1
nsw= The sample width of the template kernel.
The template is the area selected from the left image and correlated
over the right image search area. Note that the left and right
halves of the template are correlated independently. The resulting
correlation quality is the larger of the two. This means that NSW
is only 1/2 of the actual width used.
The template is only moved horizontally.
Must be an odd integer.
Defaults to 45
motion= The maximum permitted horizontal motion of the template in the
search area from it's initial location in each direction.
Thus the search area will be of width nsw+2*smotion.
Searching begins from the initial offset and skew.
Defaults to 10.
quality= The minimum acceptable correlation quality for a point to have
in order to be accepted.
0 means no correlation at all.
1 means perfect correlation.
Defaults to 0.7
offset= The integer line offset between the 2 input images.
A positive offset of n indicate the right search area is to be shifted
down n lines relative to the left template in order to align the two
input images.
If defaulted, this parameter is computed by the program.
geom=M,N
Geom controls the way the program computes the initial geometric
relationship between the 2 input images, resulting in the automatic
computation of the vertica OFFSET parameter and of a table of
horizontal shifts for each image line.
M is the maximum permitted vertical offset search used to determine the
OFFSET parameter. The search is limited to +- M lines.
N is the template width used to correlate the data at the center of
each image line.
The defaults are geom=6,120.
The vertical image shift operation is performed only if the
OFFSET keyword is defaulted.
thresh= The threshold which determines the permissible disagreement in
horizontal shift between the direct and inverse correlations.
Tiepoints with a disagreement of over THRESH are set to zero in the
output images.
Note: When thresh gets below about 0.8 then many rejections
occur. This implies that the precision of the algorithm is
beginning to be tested rather than the precision of the data.
Defaults to 1.0