Performs pixelwise arithmetic and boolean operations on images. More...

#include <Base/ImageUtils/ImageCalc.hh>

Static Public Member Functions
static void	Abs (const Image< StorageType > &in, Image< StorageType > &out)
	Computes the absolute value for each pixel. More...

static void	Add (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Computes the pixelwise sum of the input images. More...

static void	AddScalar (const Image< StorageType > &in, StorageType scalar, Image< StorageType > &out)
	Adds the scalar value to each pixel of the input image. More...

static void	And (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Performs a pixelwise AND on the input images. More...

static void	Divide (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Computes the pixelwise quotient of the input images. More...

static void	DivideScalar (const Image< StorageType > &in, StorageType scalar, Image< StorageType > &out)
	Divides each pixel from the input image by the scalar. More...

static void	Log (const Image< StorageType > &in, Image< StorageType > &out)
	Computes the natural logarithm (base e) for each pixel. More...

static void	Log10 (const Image< StorageType > &in, Image< StorageType > &out)
	Computes the common logarithm (base 10) for each pixel. More...

static void	Multiply (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Computes the pixelwise product of the input images. More...

static void	MultiplyScalar (const Image< StorageType > &in, StorageType scalar, Image< StorageType > &out)
	Multiplies the scalar value to each pixel of the input image. More...

static void	Nand (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Performs a pixelwise NAND on the input images. More...

static void	Nor (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Performs a pixelwise NOR on the input images. More...

static void	Or (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Performs a pixelwise OR on the input images. More...

static void	Subtract (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Computes the pixelwise difference of the input images. More...

static void	SubtractScalar (const Image< StorageType > &in, StorageType scalar, Image< StorageType > &out)
	Subtracts the scalar value from each pixel of the input image. More...

static void	Xor (const Image< StorageType > &in1, const Image< StorageType > &in2, Image< StorageType > &out)
	Performs a pixelwise XOR on the input images. More...

Detailed Description

template<class StorageType>
class BIAS::ImageCalc< StorageType >

Performs pixelwise arithmetic and boolean operations on images.

Note: Over- and underflows are not prevented. You may want to convert your 1-byte images (like char or unsigned char) to float.; The output image is always initialised.

Possible improvements:

avoid over- and underflows by clipping to maximum or minimum value
generalise for n input images

Author
Robert Wulff

Date
03/2010

Definition at line 52 of file ImageCalc.hh.

Member Function Documentation

template<class StorageType >

void ImageCalc::Abs	(	const Image< StorageType > &	in,
		Image< StorageType > &	out
	)

static

Computes the absolute value for each pixel.

Obiously only makes sense for signed storage types...

Definition at line 451 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Add	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Computes the pixelwise sum of the input images.

Definition at line 35 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetStorageType(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::AddScalar	(	const Image< StorageType > &	in,
		StorageType	scalar,
		Image< StorageType > &	out
	)

static

Adds the scalar value to each pixel of the input image.

Definition at line 321 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::And	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Performs a pixelwise AND on the input images.

The input images are interpreted binary: input pixel values == 0 are treated as FALSE and all values != 0 are interpreted as TRUE. Output image will be of same storage type as input images, but will contain only binary values, i.e. only 0 and 1.

Each image channel is treated individually.

Definition at line 150 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Divide	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Computes the pixelwise quotient of the input images.

The first image is divided by the second one.

Note: In case of division by zero the output image's pixel will be set to 0 and a BIASWARN will be printed to stdout

Definition at line 117 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::DivideScalar	(	const Image< StorageType > &	in,
		StorageType	scalar,
		Image< StorageType > &	out
	)

static

Divides each pixel from the input image by the scalar.

Note: The scalar must not be 0!

Definition at line 384 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Log	(	const Image< StorageType > &	in,
		Image< StorageType > &	out
	)

static

Computes the natural logarithm (base e) for each pixel.

Note: Each pixel's value will be cast to double for the computation and then back to it's original storage type.

Definition at line 411 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Log10	(	const Image< StorageType > &	in,
		Image< StorageType > &	out
	)

static

Computes the common logarithm (base 10) for each pixel.

Note: Each pixel's value will be cast to double for the computation and then back to it's original storage type.

Definition at line 431 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Multiply	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Computes the pixelwise product of the input images.

Definition at line 90 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::MultiplyScalar	(	const Image< StorageType > &	in,
		StorageType	scalar,
		Image< StorageType > &	out
	)

static

Multiplies the scalar value to each pixel of the input image.

Definition at line 363 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Nand	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Performs a pixelwise NAND on the input images.

The input images are interpreted binary: input pixel values == 0 are treated as FALSE and all values != 0 are interpreted as TRUE. Output image will be of same storage type as input images, but will contain only binary values, i.e. only 0 and 1.

Each image channel is treated individually.

Definition at line 183 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Nor	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Performs a pixelwise NOR on the input images.

The input images are interpreted binary: input pixel values == 0 are treated as FALSE and all values != 0 are interpreted as TRUE. Output image will be of same storage type as input images, but will contain only binary values, i.e. only 0 and 1.

Each image channel is treated individually.

Definition at line 249 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Or	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Performs a pixelwise OR on the input images.

The input images are interpreted binary: input pixel values == 0 are treated as FALSE and all values != 0 are interpreted as TRUE. Output image will be of same storage type as input images, but will contain only binary values, i.e. only 0 and 1.

Each image channel is treated individually.

Definition at line 216 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Subtract	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Computes the pixelwise difference of the input images.

The second image is subtracted from the first one.

Definition at line 63 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::SubtractScalar	(	const Image< StorageType > &	in,
		StorageType	scalar,
		Image< StorageType > &	out
	)

static

Subtracts the scalar value from each pixel of the input image.

Definition at line 342 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

template<class StorageType >

void ImageCalc::Xor	(	const Image< StorageType > &	in1,
		const Image< StorageType > &	in2,
		Image< StorageType > &	out
	)

static

Performs a pixelwise XOR on the input images.

The input images are interpreted binary: input pixel values == 0 are treated as FALSE and all values != 0 are interpreted as TRUE. Output image will be of same storage type as input images, but will contain only binary values, i.e. only 0 and 1.

Each image channel is treated individually.

Definition at line 282 of file ImageCalc.cpp.

References BIAS::ImageBase::GetChannelCount(), BIAS::ImageBase::GetHeight(), BIAS::Image< StorageType >::GetImageData(), BIAS::ImageBase::GetWidth(), and BIAS::Image< StorageType >::Init().

The documentation for this class was generated from the following files:

Base/ImageUtils/ImageCalc.hh
Base/ImageUtils/ImageCalc.cpp

Static Public Member Functions

Detailed Description

template<class StorageType> class BIAS::ImageCalc< StorageType >

Member Function Documentation

template<class StorageType>
class BIAS::ImageCalc< StorageType >