Operator Reference

HALCON Operator Reference / XLD / Transformations

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merge_cont_line_scan_xldmerge_cont_line_scan_xldMergeContLineScanXldMergeContLineScanXldmerge_cont_line_scan_xld (Operator)

merge_cont_line_scan_xldmerge_cont_line_scan_xldMergeContLineScanXldMergeContLineScanXldmerge_cont_line_scan_xld — Merge XLD contours from successive line scan images.

Signature

merge_cont_line_scan_xld(CurrConts, PrevConts : CurrMergedConts, PrevMergedConts : ImageHeight, Margin, MergeBorder, MaxImagesCont : )

Herror merge_cont_line_scan_xld(const Hobject CurrConts, const Hobject PrevConts, Hobject* CurrMergedConts, Hobject* PrevMergedConts, const Hlong ImageHeight, double Margin, const char* MergeBorder, const Hlong MaxImagesCont)

Herror T_merge_cont_line_scan_xld(const Hobject CurrConts, const Hobject PrevConts, Hobject* CurrMergedConts, Hobject* PrevMergedConts, const Htuple ImageHeight, const Htuple Margin, const Htuple MergeBorder, const Htuple MaxImagesCont)

void MergeContLineScanXld(const HObject& CurrConts, const HObject& PrevConts, HObject* CurrMergedConts, HObject* PrevMergedConts, const HTuple& ImageHeight, const HTuple& Margin, const HTuple& MergeBorder, const HTuple& MaxImagesCont)

HXLDCont HXLDCont::MergeContLineScanXld(const HXLDCont& PrevConts, HXLDCont* PrevMergedConts, Hlong ImageHeight, const HTuple& Margin, const HString& MergeBorder, Hlong MaxImagesCont) const

HXLDCont HXLDCont::MergeContLineScanXld(const HXLDCont& PrevConts, HXLDCont* PrevMergedConts, Hlong ImageHeight, double Margin, const HString& MergeBorder, Hlong MaxImagesCont) const

HXLDCont HXLDCont::MergeContLineScanXld(const HXLDCont& PrevConts, HXLDCont* PrevMergedConts, Hlong ImageHeight, double Margin, const char* MergeBorder, Hlong MaxImagesCont) const

HXLDCont HXLDCont::MergeContLineScanXld(const HXLDCont& PrevConts, HXLDCont* PrevMergedConts, Hlong ImageHeight, double Margin, const wchar_t* MergeBorder, Hlong MaxImagesCont) const   ( Windows only)

static void HOperatorSet.MergeContLineScanXld(HObject currConts, HObject prevConts, out HObject currMergedConts, out HObject prevMergedConts, HTuple imageHeight, HTuple margin, HTuple mergeBorder, HTuple maxImagesCont)

HXLDCont HXLDCont.MergeContLineScanXld(HXLDCont prevConts, out HXLDCont prevMergedConts, int imageHeight, HTuple margin, string mergeBorder, int maxImagesCont)

HXLDCont HXLDCont.MergeContLineScanXld(HXLDCont prevConts, out HXLDCont prevMergedConts, int imageHeight, double margin, string mergeBorder, int maxImagesCont)

def merge_cont_line_scan_xld(curr_conts: HObject, prev_conts: HObject, image_height: int, margin: Union[float, int], merge_border: str, max_images_cont: int) -> Tuple[HObject, HObject]

Description

The operator merge_cont_line_scan_xldmerge_cont_line_scan_xldMergeContLineScanXldMergeContLineScanXldmerge_cont_line_scan_xld connects adjacent XLD contours, which were extracted from adjacent images with the height ImageHeightImageHeightImageHeightimageHeightimage_height. This operator was especially designed to connect contours that were extracted from images grabbed by a line scan camera. CurrContsCurrContsCurrContscurrContscurr_conts contains the contours from the current image and PrevContsPrevContsPrevContsprevContsprev_conts the contours from the previous one.

With the help of the parameter MergeBorderMergeBorderMergeBordermergeBordermerge_border two cases can be distinguished: If the top (first) line of the current image touches the bottom (last) line of the previous image, MergeBorderMergeBorderMergeBordermergeBordermerge_border must be set to 'top'"top""top""top""top", otherwise set MergeBorderMergeBorderMergeBordermergeBordermerge_border to 'bottom'"bottom""bottom""bottom""bottom". MergeBorderMergeBorderMergeBordermergeBordermerge_border defines a margin to the border. Only those end points of the contours which are inside this margin are considered for the following merging process.

If the operator merge_cont_line_scan_xldmerge_cont_line_scan_xldMergeContLineScanXldMergeContLineScanXldmerge_cont_line_scan_xld is used recursively, the parameter MaxImagesContMaxImagesContMaxImagesContmaxImagesContmax_images_cont determines the maximum number of images which are covered by a merged contour. All points of the merged contour from an older image are removed.

The operator merge_cont_line_scan_xldmerge_cont_line_scan_xldMergeContLineScanXldMergeContLineScanXldmerge_cont_line_scan_xld returns two contour arrays. PrevMergedContsPrevMergedContsPrevMergedContsprevMergedContsprev_merged_conts contains all those contours from the previous input contours PrevContsPrevContsPrevContsprevContsprev_conts, which could not be merged with a current contour. CurrMergedContsCurrMergedContsCurrMergedContscurrMergedContscurr_merged_conts collects all current contours together with the merged parts from the previous images. Merged contours will exceed the original image, because the previous contours are moved upward (MergeBorderMergeBorderMergeBordermergeBordermerge_border='top'"top""top""top""top") or downward (MergeBorderMergeBorderMergeBordermergeBordermerge_border='bottom'"bottom""bottom""bottom""bottom") according to the image height.

Execution Information

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Processed without parallelization.

Parameters

CurrContsCurrContsCurrContscurrContscurr_conts (input_object)  xld_cont(-array) → objectHXLDContHObjectHObjectHobject

Current input contours.

PrevContsPrevContsPrevContsprevContsprev_conts (input_object)  xld_cont(-array) → objectHXLDContHObjectHObjectHobject

Merged contours from the previous iteration.

CurrMergedContsCurrMergedContsCurrMergedContscurrMergedContscurr_merged_conts (output_object)  xld_cont(-array) → objectHXLDContHObjectHObjectHobject *

Current contours, merged with old ones where applicable.

PrevMergedContsPrevMergedContsPrevMergedContsprevMergedContsprev_merged_conts (output_object)  xld_cont(-array) → objectHXLDContHObjectHObjectHobject *

Contours from the previous iteration which could not be merged with the current ones.

ImageHeightImageHeightImageHeightimageHeightimage_height (input_control)  integer → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Height of the line scan images.

Default: 512

Suggested values: 240, 480, 512

MarginMarginMarginmarginmargin (input_control)  real → HTupleUnion[float, int]HTupleHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong)

Maximum distance of contours from the image border.

Default: 0.0

Suggested values: 0.0, 1.0, 2.0, 3.0, 4.0, 5.0

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

Image line of the current image, which touches the previous image.

Default: 'top' "top" "top" "top" "top"

List of values: 'bottom'"bottom""bottom""bottom""bottom", 'top'"top""top""top""top"

MaxImagesContMaxImagesContMaxImagesContmaxImagesContmax_images_cont (input_control)  integer → HTupleintHTupleHtuple (integer) (int / long) (Hlong) (Hlong)

Maximum number of images covered by one contour.

Default: 3

Suggested values: 1, 2, 3, 4, 5

Result

The operator merge_cont_line_scan_xldmerge_cont_line_scan_xldMergeContLineScanXldMergeContLineScanXldmerge_cont_line_scan_xld returns the value 2 ( H_MSG_TRUE) if the given parameters are correct. Otherwise, an exception will be raised.

Module

Foundation

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