HALCON Reference Manual 10.0.2
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div_imagediv_imagediv_imageDivImageDivImage (Operator)

Name

div_imagediv_imagediv_imageDivImageDivImage — Divide two images.

Signature

div_image(Image1, Image2 : ImageResult : Mult, Add : )

Herror div_image(const Hobject Image1, const Hobject Image2, Hobject* ImageResult, double Mult, double Add)

Herror T_div_image(const Hobject Image1, const Hobject Image2, Hobject* ImageResult, const Htuple Mult, const Htuple Add)

Herror div_image(Hobject Image1, Hobject Image2, Hobject* ImageResult, const HTuple& Mult, const HTuple& Add)

HImage HImage::DivImage(const HImage& Image2, const HTuple& Mult, const HTuple& Add) const

HImageArray HImageArray::DivImage(const HImageArray& Image2, const HTuple& Mult, const HTuple& Add) const

void HOperatorSetX.DivImage(
[in] IHUntypedObjectX* Image1, [in] IHUntypedObjectX* Image2, [out] IHUntypedObjectX** ImageResult, [in] VARIANT Mult, [in] VARIANT Add)

IHImageX* HImageX.DivImage(
[in] IHImageX* Image2, [in] VARIANT Mult, [in] VARIANT Add)

static void HOperatorSet.DivImage(HObject image1, HObject image2, out HObject imageResult, HTuple mult, HTuple add)

HImage HImage.DivImage(HImage image2, HTuple mult, HTuple add)

HImage HImage.DivImage(HImage image2, double mult, double add)

Description

The operator div_imagediv_imagediv_imageDivImageDivImage divides two images. The gray values (g1,g2) of the input images (Image1Image1Image1Image1image1) are transformed as follows: 

                g' := g1 / g2 * Mult + Add

If an overflow or an underflow occurs the values are clipped. For a division by zero the result is set to zero.

Several images can be processed in one call. In this case both input parameters contain the same number of images which are then processed in pairs. An output image is generated for every pair.

div_imagediv_imagediv_imageDivImageDivImage can be executed on an OpenCL device for byte, int1, int2, uint2, int4, real and complex images. However, since for OpenCL 1.0 only single precision floating point is supported for all devices, and not all rounding modes are supported, the OpenCL implementation can produce slightly different results from the scalar implementation.

Parallelization

Parameters

Image1Image1Image1Image1image1 (input_object)  (multichannel-)image(-array) → objectHImageHImageHImageXHobject (byte* / int1* / int2* / uint2* / int4* / int8 / real* / complex*) *allowed for compute devices

Image(s) 1.

Image2Image2Image2Image2image2 (input_object)  (multichannel-)image(-array) → objectHImageHImageHImageXHobject (byte* / int1* / int2* / uint2* / int4* / int8 / real* / complex*) *allowed for compute devices

Image(s) 2.

ImageResultImageResultImageResultImageResultimageResult (output_object)  (multichannel-)image(-array) → objectHImageHImageHImageXHobject * (byte / int1 / int2 / uint2 / int4 / int8 / real / complex)

Result image(s) by the division.

MultMultMultMultmult (input_control)  number → HTupleHTupleVARIANTHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong) (double / Hlong)

Factor for gray range adaption.

Default value: 255

Suggested values: 0.1, 0.2, 0.5, 1.0, 2.0, 3.0, 10, 100, 500, 1000

Typical range of values: -1000 ≤ Mult Mult Mult Mult mult ≤ 1000

Minimum increment: 0.001

Recommended increment: 1

AddAddAddAddadd (input_control)  number → HTupleHTupleVARIANTHtuple (real / integer) (double / int / long) (double / Hlong) (double / Hlong) (double / Hlong)

Value for gray range adaption.

Default value: 0

Suggested values: 0.0, 128.0, 256.0, 1025

Typical range of values: -1000 ≤ Add Add Add Add add ≤ 1000

Minimum increment: 0.01

Recommended increment: 1.0

Example (HDevelop)

read_image(Image0,'fabrik')
disp_image(Image0,WindowHandle)
read_image(Image1,'monkey')
disp_image(Image1,WindowHandle)
div_image(Image0,Image1,Result,2.0,10.0)
disp_image(Result,WindowHandle)

Example (C)

read_image(&Image0,"fabrik");
disp_image(Image0,WindowHandle);
read_image(&Image1,"monkey");
disp_image(Image1,WindowHandle);
div_image(Image0,Image1,&Result,2.0,10.0);
disp_image(Result,WindowHandle);

Example (HDevelop)

read_image(Image0,'fabrik')
disp_image(Image0,WindowHandle)
read_image(Image1,'monkey')
disp_image(Image1,WindowHandle)
div_image(Image0,Image1,Result,2.0,10.0)
disp_image(Result,WindowHandle)

Example (HDevelop)

read_image(Image0,'fabrik')
disp_image(Image0,WindowHandle)
read_image(Image1,'monkey')
disp_image(Image1,WindowHandle)
div_image(Image0,Image1,Result,2.0,10.0)
disp_image(Result,WindowHandle)

Example (HDevelop)

read_image(Image0,'fabrik')
disp_image(Image0,WindowHandle)
read_image(Image1,'monkey')
disp_image(Image1,WindowHandle)
div_image(Image0,Image1,Result,2.0,10.0)
disp_image(Result,WindowHandle)

Result

The operator div_imagediv_imagediv_imageDivImageDivImage returns the value 2 (H_MSG_TRUE) if the parameters are correct. The behavior in case of empty input (no input images available) is set via the operator set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>) If necessary an exception is raised.

Alternatives

add_imageadd_imageadd_imageAddImageAddImage, sub_imagesub_imagesub_imageSubImageSubImage, mult_imagemult_imagemult_imageMultImageMultImage

See also

add_imageadd_imageadd_imageAddImageAddImage, sub_imagesub_imagesub_imageSubImageSubImage, mult_imagemult_imagemult_imageMultImageMultImage

Module

Foundation

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HALCON Reference Manual 10.0.2 Copyright © 1996-2011 MVTec Software GmbH