gen_image3gen_image3GenImage3GenImage3 (Operator)

Name

gen_image3gen_image3GenImage3GenImage3 — Create an image from three pointers to the pixels (red/green/blue).

Signature

gen_image3( : ImageRGB : Type, Width, Height, PixelPointerRed, PixelPointerGreen, PixelPointerBlue : )

Description

The operator gen_image3gen_image3GenImage3GenImage3GenImage3 creates a three-channel image of the size WidthWidthWidthWidthwidth * HeightHeightHeightHeightheight. The pixels in PixelPointerRedPixelPointerRedPixelPointerRedPixelPointerRedpixelPointerRed, PixelPointerGreenPixelPointerGreenPixelPointerGreenPixelPointerGreenpixelPointerGreen and PixelPointerBluePixelPointerBluePixelPointerBluePixelPointerBluepixelPointerBlue are stored line-sequentially. The type of the given pixels (PixelPointerRedPixelPointerRedPixelPointerRedPixelPointerRedpixelPointerRed etc.) must correspond to TypeTypeTypeTypetype (see gen_image_constgen_image_constGenImageConstGenImageConstGenImageConst for a more detailed description of the pixel types). The storage for the new image is newly created by HALCON. Thus, it can be released after the call. Note that how to pass a pointer value depends on the used operator signature and programming environment. Make sure to pass the actual memory address where the image data is stored, not the address of a pointer variable. Care must be taken not to truncate 64-bit pointers on 64-bit architectures.

Attention

gen_image3gen_image3GenImage3GenImage3GenImage3 does not check whether the pixels in PixelPointerRedPixelPointerRedPixelPointerRedPixelPointerRedpixelPointerRed,PixelPointerGreenPixelPointerGreenPixelPointerGreenPixelPointerGreenpixelPointerGreen, and PixelPointerBluePixelPointerBluePixelPointerBluePixelPointerBluepixelPointerBlue are valid or not. Thus, it must be ensured by the user that they are valid. Otherwise, the program may crash!

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

ImageRGBImageRGBImageRGBImageRGBimageRGB (output_object) image → object (byte / direction / cyclic / int1 / int2 / uint2 / int4 / real)

Created image with new image matrix.

TypeTypeTypeTypetype (input_control) string → (string)

Pixel type.

Default value: 'byte' "byte" "byte" "byte" "byte"

List of values: 'byte'"byte""byte""byte""byte", 'cyclic'"cyclic""cyclic""cyclic""cyclic", 'direction'"direction""direction""direction""direction", 'int1'"int1""int1""int1""int1", 'int2'"int2""int2""int2""int2", 'int4'"int4""int4""int4""int4", 'real'"real""real""real""real", 'uint2'"uint2""uint2""uint2""uint2"

WidthWidthWidthWidthwidth (input_control) extent.x → (integer)

Width of image.

Default value: 512

Suggested values: 128, 256, 512, 1024

Typical range of values: 1 ≤ Width Width Width Width width ≤ 512 (lin)

Minimum increment: 1

Recommended increment: 10

HeightHeightHeightHeightheight (input_control) extent.y → (integer)

Height of image.

Default value: 512

Suggested values: 128, 256, 512, 1024

Typical range of values: 1 ≤ Height Height Height Height height ≤ 512 (lin)

Minimum increment: 1

Recommended increment: 10

PixelPointerRedPixelPointerRedPixelPointerRedPixelPointerRedpixelPointerRed (input_control) pointer → (integer)

Pointer to first red value (channel 1).

PixelPointerGreenPixelPointerGreenPixelPointerGreenPixelPointerGreenpixelPointerGreen (input_control) pointer → (integer)

Pointer to first green value (channel 2).

PixelPointerBluePixelPointerBluePixelPointerBluePixelPointerBluepixelPointerBlue (input_control) pointer → (integer)

Pointer to first blue value (channel 3).

Example (C)

void NewRGBImage(Hobject *new)
{
  unsigned char  red[768*525];
  unsigned char  green[768*525];
  unsigned char  blue[768*525];
  int            r,c;
  for (r=0; r<525; r++)
    for (c=0; c<768; c++)
    {
      red[r*768+c]   = c % 255;
      green[r*768+c] = (767 - c) % 255;
      blue[r*768+c]  = r % 255;
    }
    gen_image3(new,"byte",768,525,(Hlong)red,(long)green,(long)blue);
}

main()
{
  Hobject  rgb;
  open_window(0,0,768,525,0,"","",&WindowHandle);
  NewRGBImage(&rgb);
  disp_color(rgb,WindowHandle);
}

Result

If the parameter values are correct, the operator gen_image3gen_image3GenImage3GenImage3GenImage3 returns the value 2 (H_MSG_TRUE). Otherwise an exception is raised.