polar_trans_region_invpolar_trans_region_invPolarTransRegionInvPolarTransRegionInvpolar_trans_region_inv (Operator)
Name
polar_trans_region_invpolar_trans_region_invPolarTransRegionInvPolarTransRegionInvpolar_trans_region_inv — Transform a region in polar coordinates back to Cartesian
coordinates.
Signature
polar_trans_region_inv(PolarRegion : XYTransRegion : Row, Column, AngleStart, AngleEnd, RadiusStart, RadiusEnd, WidthIn, HeightIn, Width, Height, Interpolation : )
Herror polar_trans_region_inv(const Hobject PolarRegion, Hobject* XYTransRegion, double Row, double Column, double AngleStart, double AngleEnd, double RadiusStart, double RadiusEnd, const Hlong WidthIn, const Hlong HeightIn, const Hlong Width, const Hlong Height, const char* Interpolation)
Herror T_polar_trans_region_inv(const Hobject PolarRegion, Hobject* XYTransRegion, const Htuple Row, const Htuple Column, const Htuple AngleStart, const Htuple AngleEnd, const Htuple RadiusStart, const Htuple RadiusEnd, const Htuple WidthIn, const Htuple HeightIn, const Htuple Width, const Htuple Height, const Htuple Interpolation)
void PolarTransRegionInv(const HObject& PolarRegion, HObject* XYTransRegion, const HTuple& Row, const HTuple& Column, const HTuple& AngleStart, const HTuple& AngleEnd, const HTuple& RadiusStart, const HTuple& RadiusEnd, const HTuple& WidthIn, const HTuple& HeightIn, const HTuple& Width, const HTuple& Height, const HTuple& Interpolation)
HRegion HRegion::PolarTransRegionInv(const HTuple& Row, const HTuple& Column, double AngleStart, double AngleEnd, const HTuple& RadiusStart, const HTuple& RadiusEnd, Hlong WidthIn, Hlong HeightIn, Hlong Width, Hlong Height, const HString& Interpolation) const
HRegion HRegion::PolarTransRegionInv(double Row, double Column, double AngleStart, double AngleEnd, double RadiusStart, double RadiusEnd, Hlong WidthIn, Hlong HeightIn, Hlong Width, Hlong Height, const HString& Interpolation) const
HRegion HRegion::PolarTransRegionInv(double Row, double Column, double AngleStart, double AngleEnd, double RadiusStart, double RadiusEnd, Hlong WidthIn, Hlong HeightIn, Hlong Width, Hlong Height, const char* Interpolation) const
HRegion HRegion::PolarTransRegionInv(double Row, double Column, double AngleStart, double AngleEnd, double RadiusStart, double RadiusEnd, Hlong WidthIn, Hlong HeightIn, Hlong Width, Hlong Height, const wchar_t* Interpolation) const
(
Windows only)
static void HOperatorSet.PolarTransRegionInv(HObject polarRegion, out HObject XYTransRegion, HTuple row, HTuple column, HTuple angleStart, HTuple angleEnd, HTuple radiusStart, HTuple radiusEnd, HTuple widthIn, HTuple heightIn, HTuple width, HTuple height, HTuple interpolation)
HRegion HRegion.PolarTransRegionInv(HTuple row, HTuple column, double angleStart, double angleEnd, HTuple radiusStart, HTuple radiusEnd, int widthIn, int heightIn, int width, int height, string interpolation)
HRegion HRegion.PolarTransRegionInv(double row, double column, double angleStart, double angleEnd, double radiusStart, double radiusEnd, int widthIn, int heightIn, int width, int height, string interpolation)
def polar_trans_region_inv(polar_region: HObject, row: Union[int, float], column: Union[int, float], angle_start: float, angle_end: float, radius_start: Union[int, float], radius_end: Union[int, float], width_in: int, height_in: int, width: int, height: int, interpolation: str) -> HObject
Description
polar_trans_region_invpolar_trans_region_invPolarTransRegionInvPolarTransRegionInvPolarTransRegionInvpolar_trans_region_inv transforms the polar coordinate
representation of a region, stored in PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region, back
onto an annular arc in Cartesian coordinates, described by the radii
RadiusStartRadiusStartRadiusStartRadiusStartradiusStartradius_start and RadiusEndRadiusEndRadiusEndRadiusEndradiusEndradius_end and the angles
AngleStartAngleStartAngleStartAngleStartangleStartangle_start and AngleEndAngleEndAngleEndAngleEndangleEndangle_end with the center point
located at (RowRowRowRowrowrow, ColumnColumnColumnColumncolumncolumn). All of these values can
be chosen as real numbers. In addition, the dimensions of the
virtual image containing the region PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region must be
given in WidthInWidthInWidthInWidthInwidthInwidth_in and
HeightInHeightInHeightInHeightInheightInheight_in. WidthInWidthInWidthInWidthInwidthInwidth_in-1 is the column coordinate
corresponding to AngleEndAngleEndAngleEndAngleEndangleEndangle_end and HeightInHeightInHeightInHeightInheightInheight_in-1 is the
row coordinate corresponding to
RadiusEndRadiusEndRadiusEndRadiusEndradiusEndradius_end. AngleStartAngleStartAngleStartAngleStartangleStartangle_start and RadiusStartRadiusStartRadiusStartRadiusStartradiusStartradius_start
correspond to column and row coordinate 0. Furthermore,
the dimensions WidthWidthWidthWidthwidthwidth and HeightHeightHeightHeightheightheight of the virtual
output image containing the transformed region
XYTransRegionXYTransRegionXYTransRegionXYTransRegionXYTransRegionxytrans_region are required.
The angles and radii are inclusive, which means that the row
coordinate 0 in PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region will be mapped onto a
a circle with a distance of RadiusStartRadiusStartRadiusStartRadiusStartradiusStartradius_start pixels from the
specified center and the row with the coordinate
HeightInHeightInHeightInHeightInheightInheight_in-1 will be mapped onto a circle of radius
RadiusEndRadiusEndRadiusEndRadiusEndradiusEndradius_end. This applies to AngleStartAngleStartAngleStartAngleStartangleStartangle_start,
AngleEndAngleEndAngleEndAngleEndangleEndangle_end, and WidthInWidthInWidthInWidthInwidthInwidth_in in an analogous way. If the
width of the input region PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region corresponds to an
angle interval greater than 2pi, the region is cropped such that
length of this interval is 2pi.
The parameter InterpolationInterpolationInterpolationInterpolationinterpolationinterpolation is used to select the
interpolation method 'bilinear'"bilinear""bilinear""bilinear""bilinear""bilinear" or
'nearest_neighbor'"nearest_neighbor""nearest_neighbor""nearest_neighbor""nearest_neighbor""nearest_neighbor". Setting InterpolationInterpolationInterpolationInterpolationinterpolationinterpolation to
'bilinear'"bilinear""bilinear""bilinear""bilinear""bilinear" leads to smoother region boundaries, especially
if regions are enlarged. However, the runtime increases
significantly.
polar_trans_region_invpolar_trans_region_invPolarTransRegionInvPolarTransRegionInvPolarTransRegionInvpolar_trans_region_inv is the inverse function of
polar_trans_regionpolar_trans_regionPolarTransRegionPolarTransRegionPolarTransRegionpolar_trans_region.
The call sequence:
polar_trans_region(Region, PolarRegion, Row, Column, rad(360), 0, 0 Radius, Width, Height, 'nearest_neighbor')polar_trans_region(Region, PolarRegion, Row, Column, rad(360), 0, 0 Radius, Width, Height, "nearest_neighbor")PolarTransRegion(Region, PolarRegion, Row, Column, rad(360), 0, 0 Radius, Width, Height, "nearest_neighbor")PolarTransRegion(Region, PolarRegion, Row, Column, rad(360), 0, 0 Radius, Width, Height, "nearest_neighbor")PolarTransRegion(Region, PolarRegion, Row, Column, rad(360), 0, 0 Radius, Width, Height, "nearest_neighbor")polar_trans_region(Region, PolarRegion, Row, Column, rad(360), 0, 0 Radius, Width, Height, "nearest_neighbor")
|
polar_trans_region_inv(PolarRegion, XYTransRegion, Row, Column, rad(360), 0, 0, Radius, Width, Height, Width, Height, 'nearest_neighbor')polar_trans_region_inv(PolarRegion, XYTransRegion, Row, Column, rad(360), 0, 0, Radius, Width, Height, Width, Height, "nearest_neighbor")PolarTransRegionInv(PolarRegion, XYTransRegion, Row, Column, rad(360), 0, 0, Radius, Width, Height, Width, Height, "nearest_neighbor")PolarTransRegionInv(PolarRegion, XYTransRegion, Row, Column, rad(360), 0, 0, Radius, Width, Height, Width, Height, "nearest_neighbor")PolarTransRegionInv(PolarRegion, XYTransRegion, Row, Column, rad(360), 0, 0, Radius, Width, Height, Width, Height, "nearest_neighbor")polar_trans_region_inv(PolarRegion, XYTransRegion, Row, Column, rad(360), 0, 0, Radius, Width, Height, Width, Height, "nearest_neighbor")
|
returns the region
RegionRegionRegionRegionregionregion, restricted to the circle around
(
RowRowRowRowrowrow,
ColumnColumnColumnColumncolumncolumn) with radius
RadiusRadiusRadiusRadiusradiusradius, as its
output region
XYTransRegionXYTransRegionXYTransRegionXYTransRegionXYTransRegionxytrans_region.
If more than one region is passed in PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region, their
Cartesian transformations are computed individually and stored as a
tuple in XYTransRegionXYTransRegionXYTransRegionXYTransRegionXYTransRegionxytrans_region. Please note that the indices of an
input region and its transformation only correspond if the system
variable 'store_empty_regions'"store_empty_regions""store_empty_regions""store_empty_regions""store_empty_regions""store_empty_regions" is set to 'false'"false""false""false""false""false"
(see set_systemset_systemSetSystemSetSystemSetSystemset_system). Otherwise empty output regions are
discarded and the length of the input tuple PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region is
most likely not equal to the length of the output tuple
XYTransRegionXYTransRegionXYTransRegionXYTransRegionXYTransRegionxytrans_region.
Further Information
For an explanation of the different 2D coordinate systems
used in HALCON, see the introduction of chapter
Transformations / 2D Transformations.
Attention
If WidthWidthWidthWidthwidthwidth or HeightHeightHeightHeightheightheight are chosen greater than the
dimensions of the current image, the system variable
'clip_region'"clip_region""clip_region""clip_region""clip_region""clip_region" should be set to 'false'"false""false""false""false""false" (see
set_systemset_systemSetSystemSetSystemSetSystemset_system). Otherwise, an output region that does not lie
within the dimensions of the current image can produce an error
message.
Execution Information
- Multithreading type: reentrant (runs in parallel with non-exclusive operators).
- Multithreading scope: global (may be called from any thread).
- Automatically parallelized on tuple level.
- Automatically parallelized on internal data level.
Parameters
PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region (input_object) region(-array) → objectHRegionHObjectHRegionHobject
Input region.
XYTransRegionXYTransRegionXYTransRegionXYTransRegionXYTransRegionxytrans_region (output_object) region(-array) → objectHRegionHObjectHRegionHobject *
Output region.
RowRowRowRowrowrow (input_control) number → HTupleUnion[int, float]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Row coordinate of the center of the arc.
Default:
256
Suggested values:
0, 16, 32, 64, 128, 240, 256, 480, 512
Value range:
-131068
≤
Row
Row
Row
Row
row
row
≤
131068
ColumnColumnColumnColumncolumncolumn (input_control) number → HTupleUnion[int, float]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Column coordinate of the center of the arc.
Default:
256
Suggested values:
0, 16, 32, 64, 128, 256, 320, 512, 640
Value range:
-131068
≤
Column
Column
Column
Column
column
column
≤
131068
AngleStartAngleStartAngleStartAngleStartangleStartangle_start (input_control) angle.rad → HTuplefloatHTupleHtuple (real) (double) (double) (double)
Angle of the ray to map the column coordinate 0
of PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region to.
Default:
0.0
Suggested values:
0.0, 0.78539816, 1.57079632, 3.141592654, 6.2831853
Value range:
-6.2831853
≤
AngleStart
AngleStart
AngleStart
AngleStart
angleStart
angle_start
≤
6.2831853
RadiusStartRadiusStartRadiusStartRadiusStartradiusStartradius_start (input_control) number → HTupleUnion[int, float]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)
Radius of the circle to map the row coordinate
0 of PolarRegionPolarRegionPolarRegionPolarRegionpolarRegionpolar_region to.
Default:
0
Suggested values:
0, 16, 32, 64, 100, 128, 256, 512
Value range:
0
≤
RadiusStart
RadiusStart
RadiusStart
RadiusStart
radiusStart
radius_start
≤
32767
WidthInWidthInWidthInWidthInwidthInwidth_in (input_control) extent.x → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Width of the virtual input image.
Default:
512
Suggested values:
256, 320, 512, 640, 800, 1024
Value range:
2
≤
WidthIn
WidthIn
WidthIn
WidthIn
widthIn
width_in
≤
32767
HeightInHeightInHeightInHeightInheightInheight_in (input_control) extent.y → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Height of the virtual input image.
Default:
512
Suggested values:
240, 256, 480, 512, 600, 1024
Value range:
2
≤
HeightIn
HeightIn
HeightIn
HeightIn
heightIn
height_in
≤
32767
WidthWidthWidthWidthwidthwidth (input_control) extent.x → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Width of the virtual output image.
Default:
512
Suggested values:
256, 320, 512, 640, 800, 1024
Value range:
1
≤
Width
Width
Width
Width
width
width
≤
32767
HeightHeightHeightHeightheightheight (input_control) extent.y → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)
Height of the virtual output image.
Default:
512
Suggested values:
240, 256, 480, 512, 600, 1024
Value range:
1
≤
Height
Height
Height
Height
height
height
≤
32767
InterpolationInterpolationInterpolationInterpolationinterpolationinterpolation (input_control) string → HTuplestrHTupleHtuple (string) (string) (HString) (char*)
Interpolation method for the transformation.
Default:
'nearest_neighbor'
"nearest_neighbor"
"nearest_neighbor"
"nearest_neighbor"
"nearest_neighbor"
"nearest_neighbor"
List of values:
'bilinear'"bilinear""bilinear""bilinear""bilinear""bilinear", 'nearest_neighbor'"nearest_neighbor""nearest_neighbor""nearest_neighbor""nearest_neighbor""nearest_neighbor"
See also
polar_trans_image_extpolar_trans_image_extPolarTransImageExtPolarTransImageExtPolarTransImageExtpolar_trans_image_ext,
polar_trans_image_invpolar_trans_image_invPolarTransImageInvPolarTransImageInvPolarTransImageInvpolar_trans_image_inv,
polar_trans_regionpolar_trans_regionPolarTransRegionPolarTransRegionPolarTransRegionpolar_trans_region,
polar_trans_contour_xldpolar_trans_contour_xldPolarTransContourXldPolarTransContourXldPolarTransContourXldpolar_trans_contour_xld,
polar_trans_contour_xld_invpolar_trans_contour_xld_invPolarTransContourXldInvPolarTransContourXldInvPolarTransContourXldInvpolar_trans_contour_xld_inv
Module
Foundation