Operator Reference

HALCON Operator Reference / Image / Manipulation
ClassesClasses | | Operators

paint_xldpaint_xldPaintXldPaintXldpaint_xld (Operator)

paint_xldpaint_xldPaintXldPaintXldpaint_xld — Paint XLD objects into an image.

Signature

paint_xld(XLD, Image : ImageResult : Grayval : )

Herror paint_xld(const Hobject XLD, const Hobject Image, Hobject* ImageResult, double Grayval)

Herror T_paint_xld(const Hobject XLD, const Hobject Image, Hobject* ImageResult, const Htuple Grayval)

void PaintXld(const HObject& XLD, const HObject& Image, HObject* ImageResult, const HTuple& Grayval)

HImage HImage::PaintXld(const HXLD& XLD, const HTuple& Grayval) const

HImage HImage::PaintXld(const HXLD& XLD, double Grayval) const

HImage HXLD::PaintXld(const HImage& Image, const HTuple& Grayval) const

HImage HXLD::PaintXld(const HImage& Image, double Grayval) const

static void HOperatorSet.PaintXld(HObject XLD, HObject image, out HObject imageResult, HTuple grayval)

HImage HImage.PaintXld(HXLD XLD, HTuple grayval)

HImage HImage.PaintXld(HXLD XLD, double grayval)

HImage HXLD.PaintXld(HImage image, HTuple grayval)

HImage HXLD.PaintXld(HImage image, double grayval)

def paint_xld(xld: HObject, image: HObject, grayval: MaybeSequence[Union[int, float]]) -> HObject

Description

paint_xldpaint_xldPaintXldPaintXldpaint_xld paints the XLD objects XLDXLDXLDXLDxld of type contour or polygon with the constant gray values GrayvalGrayvalGrayvalgrayvalgrayval into each channel of the background image given in ImageImageImageimageimage and returns the result in ImageResultImageResultImageResultimageResultimage_result. Open contours of XLD objects are closed and their enclosed regions are filled up. The rim of the subpixel XLD objects is painted onto the background image using anti-aliasing.

Filling up XLD-objects that have crossings or segments that are very close (lying in neighboring pixels) does not work correctly and leads to artifacts. The set_systemset_systemSetSystemSetSystemset_system parameter 'neighborhood'"neighborhood""neighborhood""neighborhood""neighborhood" defines whether diagonal neighbors are filled as well as orthogonal neighbors.

GrayvalGrayvalGrayvalgrayvalgrayval contains the gray values for painting the XLD objects. These gray values can either be specified for each channel once, valid for all XLD objects, or for each XLD object separately. To define the latter, group the channel gray values g of each XLD object and concatenate them to a tuple according to the order of the XLD objects, e.g., for a three channel image:

[g(channel1,xld1), g(channel2,xld1), g(channel3,xld1), g(channel1,xld2), ... ]. If the input image is of type direction, gray values that are not in the value range that is valid for direction images are set to the value 255 to mark them as invalid.

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

XLDXLDXLDXLDxld (input_object)  xld(-array) → objectHXLDHObjectHObjectHobject

XLD objects to be painted into the input image.

ImageImageImageimageimage (input_object)  (multichannel-)image → objectHImageHObjectHObjectHobject (byte / direction / cyclic / int1 / int2 / uint2 / int4 / real / complex)

Image in which the xld objects are to be painted.

ImageResultImageResultImageResultimageResultimage_result (output_object)  image → objectHImageHObjectHObjectHobject * (byte / direction / cyclic / int1 / int2 / uint2 / int4 / real / complex)

Image containing the result.

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

Desired gray value of the xld object.

Default: 255.0

Suggested values: 0.0, 1.0, 2.0, 5.0, 10.0, 16.0, 32.0, 64.0, 128.0, 253.0, 254.0, 255.0

Example (HDevelop)

* Paint colored xld objects into a gray image

* read and copy image to generate a three channel image
read_image(Image1,'green-dot')
copy_image(Image1,Image2)
copy_image(Image1,Image3)
compose3(Image1,Image2,Image3,Image)
* extract subpixel border
threshold_sub_pix(Image1,Border,128)
* select the circle and the arrows
select_obj(Border,circle,14)
select_obj(Border,arrows,16)
concat_obj(circle,arrows,green_dot)
* paint a green circle and white arrows (to paint all
* objects e.g., blue, pass [0,0,255] tuple for GrayVal)
paint_xld(green_dot,Image,ImageResult,[0,255,0,255,255,255])

Example (C)

/* Paint colored xld objects into a gray image */

/* read and copy image to generate a three channel image */
read_image(&Image1,"green-dot");
copy_image(Image1,&Image2);
copy_image(Image1,&Image3);
compose3(Image1,Image2,Image3,&Image);
/* extract subpixel border */
threshold_sub_pix(Image1,&Border,128);
/* select the circle and the arrows */
select_obj(Border,&circle,14);
select_obj(Border,&arrows,16);
concat_obj(circle,arrows,&green_dot);
/* paint a green circle and white arrows,
 * therefore define tuple grayval:=[0,255,0,255,255,255].
 * (to paint all objects e.g., blue define grayval:=[0,0,255]) */
T_paint_xld(green_dot,Image,&ImageResult,grayval);

Example (HDevelop)

* Paint colored xld objects into a gray image

* read and copy image to generate a three channel image
read_image(Image1,'green-dot')
copy_image(Image1,Image2)
copy_image(Image1,Image3)
compose3(Image1,Image2,Image3,Image)
* extract subpixel border
threshold_sub_pix(Image1,Border,128)
* select the circle and the arrows
select_obj(Border,circle,14)
select_obj(Border,arrows,16)
concat_obj(circle,arrows,green_dot)
* paint a green circle and white arrows (to paint all
* objects e.g., blue, pass [0,0,255] tuple for GrayVal)
paint_xld(green_dot,Image,ImageResult,[0,255,0,255,255,255])

Example (HDevelop)

* Paint colored xld objects into a gray image

* read and copy image to generate a three channel image
read_image(Image1,'green-dot')
copy_image(Image1,Image2)
copy_image(Image1,Image3)
compose3(Image1,Image2,Image3,Image)
* extract subpixel border
threshold_sub_pix(Image1,Border,128)
* select the circle and the arrows
select_obj(Border,circle,14)
select_obj(Border,arrows,16)
concat_obj(circle,arrows,green_dot)
* paint a green circle and white arrows (to paint all
* objects e.g., blue, pass [0,0,255] tuple for GrayVal)
paint_xld(green_dot,Image,ImageResult,[0,255,0,255,255,255])

Result

paint_xldpaint_xldPaintXldPaintXldpaint_xld returns 2 ( H_MSG_TRUE) if all parameters are correct. If the input is empty the behavior can be set via set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>). If necessary, an exception is raised.

Possible Predecessors

read_imageread_imageReadImageReadImageread_image, gen_image_constgen_image_constGenImageConstGenImageConstgen_image_const, gen_image_protogen_image_protoGenImageProtoGenImageProtogen_image_proto, gen_contour_polygon_xldgen_contour_polygon_xldGenContourPolygonXldGenContourPolygonXldgen_contour_polygon_xld, threshold_sub_pixthreshold_sub_pixThresholdSubPixThresholdSubPixthreshold_sub_pix

Alternatives

set_grayvalset_grayvalSetGrayvalSetGrayvalset_grayval, paint_graypaint_grayPaintGrayPaintGraypaint_gray, paint_regionpaint_regionPaintRegionPaintRegionpaint_region

See also

gen_image_constgen_image_constGenImageConstGenImageConstgen_image_const

Module

Foundation

ClassesClasses | | Operators