HALCON Reference Manual 10.0.2
Name
elliptic_axis_grayelliptic_axis_grayelliptic_axis_grayEllipticAxisGrayEllipticAxisGray — Compute the orientation and major axes of a region in a gray value
image.
Herror elliptic_axis_gray(const Hobject Regions, const Hobject Image, double* Ra, double* Rb, double* Phi)
Herror T_elliptic_axis_gray(const Hobject Regions, const Hobject Image, Htuple* Ra, Htuple* Rb, Htuple* Phi)
Herror elliptic_axis_gray(Hobject Regions, Hobject Image, double* Ra, double* Rb, double* Phi)
Herror elliptic_axis_gray(Hobject Regions, Hobject Image, HTuple* Ra, HTuple* Rb, HTuple* Phi)
double HRegion::EllipticAxisGray(const HImage& Image, double* Rb, double* Phi) const
HTuple HRegionArray::EllipticAxisGray(const HImage& Image, HTuple* Rb, HTuple* Phi) const
static void HOperatorSet.EllipticAxisGray(HObject regions, HObject image, out HTuple ra, out HTuple rb, out HTuple phi)
HTuple HImage.EllipticAxisGray(HRegion regions, out HTuple rb, out HTuple phi)
double HImage.EllipticAxisGray(HRegion regions, out double rb, out double phi)
HTuple HRegion.EllipticAxisGray(HImage image, out HTuple rb, out HTuple phi)
double HRegion.EllipticAxisGray(HImage image, out double rb, out double phi)
The operator elliptic_axis_grayelliptic_axis_grayelliptic_axis_grayEllipticAxisGrayEllipticAxisGray calculates the length of the
axes and the orientation of the ellipse having the “same
orientation” and the “aspect ratio” as the input region. Several
input regions can be passed in RegionsRegionsRegionsRegionsregions as tuples. The
length of the major axis RaRaRaRara and the minor axis RbRbRbRbrb
as well as the orientation of the major axis with regard to the
x-axis (PhiPhiPhiPhiphi) are determined. The angle is returned in
radians. The calculation is done analogously to
elliptic_axiselliptic_axiselliptic_axisEllipticAxisEllipticAxis. The only difference is that in
elliptic_axis_grayelliptic_axis_grayelliptic_axis_grayEllipticAxisGrayEllipticAxisGray the gray value moments are used instead
of the region moments. The gray value moments are derived from the
input image ImageImageImageImageimage. For the definition of the gray value
moments, see area_center_grayarea_center_grayarea_center_grayAreaCenterGrayAreaCenterGray.
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Automatically parallelized on tuple level.
Region(s) to be examined.
RaRaRaRara (output_control) real(-array) → HTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double)
Major axis of the region.
RbRbRbRbrb (output_control) real(-array) → HTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double)
Minor axis of the region.
PhiPhiPhiPhiphi (output_control) angle.rad(-array) → HTupleHTupleVARIANTHtuple (real) (double) (double) (double) (double)
Angle enclosed by the major axis and the x-axis.
elliptic_axis_grayelliptic_axis_grayelliptic_axis_grayEllipticAxisGrayEllipticAxisGray returns 2 (H_MSG_TRUE) if all parameters are
correct and no error occurs during execution. If the input is empty
the behavior can be set via
set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>). If
necessary, an exception is raised.
thresholdthresholdthresholdThresholdThreshold,
regiongrowingregiongrowingregiongrowingRegiongrowingRegiongrowing,
connectionconnectionconnectionConnectionConnection
gen_ellipsegen_ellipsegen_ellipseGenEllipseGenEllipse
elliptic_axiselliptic_axiselliptic_axisEllipticAxisEllipticAxis
area_center_grayarea_center_grayarea_center_grayAreaCenterGrayAreaCenterGray
Foundation
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