invert_imageinvert_imageinvert_imageInvertImageInvertImage (Operator)

Name

invert_imageinvert_imageinvert_imageInvertImageInvertImage — Invert an image.

Signature

Description

The operator invert_imageinvert_imageinvert_imageInvertImageInvertImage inverts the gray values of an image. For images of the 'byte' and 'cyclic' type the result is calculated as:

     g' = 255 - g

Images of the 'direction' type are transformed by

     g' = (g + 90) modulo 180

In the case of signed types the values are negated. The resulting image has the same pixel type as the input image.

Several images can be processed in one call. An output image is generated for every input image.

invert_imageinvert_imageinvert_imageInvertImageInvertImage can be executed on an OpenCL device for byte, direction, cyclic, int1, int2, uint2, int4, and real images.

Parallelization

• Supports OpenCL compute devices.
• 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 channel level.
• Automatically parallelized on domain level.

Parameters

read_image(Orig,'fabrik')
invert_image(Orig,Invert)
disp_image(Invert,WindowHandle)

read_image(&Orig,"fabrik");
invert_image(Orig,&Invert);
disp_image(Invert,WindowHandle);

#include "HalconCpp.h"
using namespace Halcon;
#include "HIOStream.h"
#if !defined(USE_IOSTREAM_H)
using namespace std;
#endif

int main()
{
  HWindow  win;
  HImage   inv,
           org ("monkey");

   cout << "Display original image" << endl;
   org.Display (win);
   win.Click ();

   inv = org.InvertImage ();

   cout << "Display inverted image" << endl;
   inv.Display (win);
   win.Click ();

   return 0;
}

read_image(Orig,'fabrik')
invert_image(Orig,Invert)
disp_image(Invert,WindowHandle)

read_image(Orig,'fabrik')
invert_image(Orig,Invert)
disp_image(Invert,WindowHandle)

Possible Successors

watershedswatershedswatershedsWatershedsWatersheds

Alternatives

scale_imagescale_imagescale_imageScaleImageScaleImage

See also

scale_imagescale_imagescale_imageScaleImageScaleImage, add_imageadd_imageadd_imageAddImageAddImage, sub_imagesub_imagesub_imageSubImageSubImage

Module

Foundation