HALCON 21.11.0.0 / HALCON Operator Reference / Tools / Interpolation
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interpolate_scattered_data_points_to_imageT_interpolate_scattered_data_points_to_imageInterpolateScatteredDataPointsToImageInterpolateScatteredDataPointsToImageinterpolate_scattered_data_points_to_image (Operator)

Name

interpolate_scattered_data_points_to_imageT_interpolate_scattered_data_points_to_imageInterpolateScatteredDataPointsToImageInterpolateScatteredDataPointsToImageinterpolate_scattered_data_points_to_image — Creating an image from the interpolation of scattered data.

Signature

interpolate_scattered_data_points_to_image( : ImageInterpolated : Method, Rows, Columns, Values, Width, Height, GenParamName, GenParamValue : )

Herror T_interpolate_scattered_data_points_to_image(Hobject* ImageInterpolated, const Htuple Method, const Htuple Rows, const Htuple Columns, const Htuple Values, const Htuple Width, const Htuple Height, const Htuple GenParamName, const Htuple GenParamValue)

void InterpolateScatteredDataPointsToImage(HObject* ImageInterpolated, const HTuple& Method, const HTuple& Rows, const HTuple& Columns, const HTuple& Values, const HTuple& Width, const HTuple& Height, const HTuple& GenParamName, const HTuple& GenParamValue)

static void HOperatorSet.InterpolateScatteredDataPointsToImage(out HObject imageInterpolated, HTuple method, HTuple rows, HTuple columns, HTuple values, HTuple width, HTuple height, HTuple genParamName, HTuple genParamValue)

def interpolate_scattered_data_points_to_image(method: str, rows: Sequence[Union[float, int]], columns: Sequence[Union[float, int]], values: Sequence[Union[float, int]], width: int, height: int, gen_param_name: Sequence[str], gen_param_value: Sequence[Union[str, int, float]]) -> HObject

Description

interpolate_scattered_data_points_to_imageinterpolate_scattered_data_points_to_imageInterpolateScatteredDataPointsToImageInterpolateScatteredDataPointsToImageInterpolateScatteredDataPointsToImageinterpolate_scattered_data_points_to_image interpolates the data points, given in RowsRowsRowsRowsrowsrows and ColumnsColumnsColumnsColumnscolumnscolumns with the corresponding measurement ValuesValuesValuesValuesvaluesvalues, and returns the result in ImageInterpolatedImageInterpolatedImageInterpolatedImageInterpolatedimageInterpolatedimage_interpolated. The size of the output image is defined by its WidthWidthWidthWidthwidthwidth and its HeightHeightHeightHeightheightheight with the upper left corner at (0,0). In order to interpolate at negative coordinates of (RowsRowsRowsRowsrowsrows,ColumnsColumnsColumnsColumnscolumnscolumns), simply translate all input points accordingly. With the parameter MethodMethodMethodMethodmethodmethod the interpolation algorithm is specified. So far, only the 'thin_plate_splines'"thin_plate_splines""thin_plate_splines""thin_plate_splines""thin_plate_splines""thin_plate_splines" are supported. This method interpolates on a global scale, which means that all points are regarded for the interpolation, no matter how far away they are. The influence of far points is correlated to where r defines the distance of two points. In comparison to interpolate_scattered_data_imageinterpolate_scattered_data_imageInterpolateScatteredDataImageInterpolateScatteredDataImageInterpolateScatteredDataImageinterpolate_scattered_data_image, interpolate_scattered_data_points_to_imageinterpolate_scattered_data_points_to_imageInterpolateScatteredDataPointsToImageInterpolateScatteredDataPointsToImageInterpolateScatteredDataPointsToImageinterpolate_scattered_data_points_to_image also supports subpixel coordinates for RowsRowsRowsRowsrowsrows and ColumnsColumnsColumnsColumnscolumnscolumns. If the same data points (RowsRowsRowsRowsrowsrows,ColumnsColumnsColumnsColumnscolumnscolumns,ValuesValuesValuesValuesvaluesvalues) are used for the interpolation of different output images in subsequent steps, the operator create_scattered_data_interpolatorcreate_scattered_data_interpolatorCreateScatteredDataInterpolatorCreateScatteredDataInterpolatorCreateScatteredDataInterpolatorcreate_scattered_data_interpolator may be more efficient.

The following parameters can be adjusted with GenParamNameGenParamNameGenParamNameGenParamNamegenParamNamegen_param_name and GenParamValueGenParamValueGenParamValueGenParamValuegenParamValuegen_param_value:

'alpha'"alpha""alpha""alpha""alpha""alpha":

The parameter 'alpha'"alpha""alpha""alpha""alpha""alpha" is a smoothing factor. For 'alpha'"alpha""alpha""alpha""alpha""alpha" = 0, all points passed in (RowsRowsRowsRowsrowsrows,ColumnsColumnsColumnsColumnscolumnscolumns,ValuesValuesValuesValuesvaluesvalues) are interpolated exactly. With 'alpha'"alpha""alpha""alpha""alpha""alpha" getting larger, the interpolation smoothes the points in way that all interpolated points of the result image ImageInterpolatedImageInterpolatedImageInterpolatedImageInterpolatedimageInterpolatedimage_interpolated lie on a common plane. Default value is 0. Restrictions: 'alpha'"alpha""alpha""alpha""alpha""alpha" >= 0

Execution Information

Parameters

ImageInterpolatedImageInterpolatedImageInterpolatedImageInterpolatedimageInterpolatedimage_interpolated (output_object)  singlechannelimage → objectHImageHObjectHImageHobject * (real)

Interpolated image

MethodMethodMethodMethodmethodmethod (input_control)  string → HTuplestrHTupleHtuple (string) (string) (HString) (char*)

Method for the interpolation

Default value: 'thin_plate_splines' "thin_plate_splines" "thin_plate_splines" "thin_plate_splines" "thin_plate_splines" "thin_plate_splines"

Suggested values: 'thin_plate_splines'"thin_plate_splines""thin_plate_splines""thin_plate_splines""thin_plate_splines""thin_plate_splines"

RowsRowsRowsRowsrowsrows (input_control)  point.y-array → HTupleSequence[Union[float, int]]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Row coordinates of the points used for the interpolation

ColumnsColumnsColumnsColumnscolumnscolumns (input_control)  point.x-array → HTupleSequence[Union[float, int]]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Column coordinates of the points used for the interpolation

ValuesValuesValuesValuesvaluesvalues (input_control)  number-array → HTupleSequence[Union[float, int]]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Values of the points used for the interpolation

WidthWidthWidthWidthwidthwidth (input_control)  extent.x → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Width of the interpolated image

Default value: 640

HeightHeightHeightHeightheightheight (input_control)  extent.y → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Height of the interpolated image

Default value: 480

GenParamNameGenParamNameGenParamNameGenParamNamegenParamNamegen_param_name (input_control)  attribute.name-array → HTupleSequence[str]HTupleHtuple (string) (string) (HString) (char*)

Names of the generic parameters that can be adjusted

Default value: []

Suggested values: 'alpha'"alpha""alpha""alpha""alpha""alpha"

GenParamValueGenParamValueGenParamValueGenParamValuegenParamValuegen_param_value (input_control)  attribute.value-array → HTupleSequence[Union[str, int, float]]HTupleHtuple (real / string / integer) (double / string / int / long) (double / HString / Hlong) (double / char* / Hlong)

Values of the generic parameters that can be adjusted

Default value: []

Suggested values: 0, 1.0, 10.0, 100.0

Result

If the parameters are valid, the operator interpolate_scattered_data_points_to_imageinterpolate_scattered_data_points_to_imageInterpolateScatteredDataPointsToImageInterpolateScatteredDataPointsToImageInterpolateScatteredDataPointsToImageinterpolate_scattered_data_points_to_image returns the value TRUE. If necessary, an exception is raised.

Alternatives

interpolate_scattered_data_imageinterpolate_scattered_data_imageInterpolateScatteredDataImageInterpolateScatteredDataImageInterpolateScatteredDataImageinterpolate_scattered_data_image

Module

Foundation

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HALCON Operator Reference 21.11.0.0 Copyright © 1996-2021 MVTec Software GmbH
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