#include <image.h>

Classes
struct	iterator

Public Member Functions
iterator	begin (void)

iterator	end (void)

	Image32 (void)

	Image32 (const Image32 &img)

	Image32 (Image32 &&img)

Image32 &	operator= (const Image32 &img)

Image32 &	operator= (Image32 &&img)

	~Image32 (void)

void	setSize (int width, int height)

int	width (void) const

int	height (void) const

Pixel32 &	operator() (int x, int y)

const Pixel32 &	operator() (int x, int y) const

void	read (std::string fileName)

void	write (std::string fileName) const

Image32	addRandomNoise (double noise) const

Image32	brighten (double brightness) const

Image32	luminance (void) const

Image32	contrast (double contrast) const

Image32	saturate (double saturation) const

Image32	quantize (int bits) const

Image32	randomDither (int bits) const

Image32	orderedDither2X2 (int bits) const

Image32	floydSteinbergDither (int bits) const

Image32	blur3X3 (void) const

Image32	edgeDetect3X3 (void) const

Image32	scaleNearest (double scaleFactor) const

Image32	scaleBilinear (double scaleFactor) const

Image32	scaleGaussian (double scaleFactor) const

Image32	rotateNearest (double angle) const

Image32	rotateBilinear (double angle) const

Image32	rotateGaussian (double angle) const

void	setAlpha (const Image32 &matte)

Image32	composite (const Image32 &overlay) const

Image32	crop (int x1, int y1, int x2, int y2) const

Image32	funFilter (void) const

Image32	warp (const OrientedLineSegmentPairs &olsp) const

Pixel32	nearestSample (Util::Point2D p) const

Pixel32	bilinearSample (Util::Point2D p) const

Pixel32	gaussianSample (Util::Point2D p, double variance, double radius) const

Static Public Member Functions
static Image32	BeierNeelyMorph (const Image32 &source, const Image32 &destination, const OrientedLineSegmentPairs &olsp, double timeStep)

static Image32	CrossDissolve (const Image32 &source, const Image32 &destination, double blendWeight)

Private Member Functions
void	_assertInBounds (int x, int y) const

Private Attributes
int	_width

int	_height

Pixel32 *	_pixels

Detailed Description

This class represents an RGBA image with 8 bits per channel.

Constructor & Destructor Documentation

◆ Image32() [1/3]

Image32::Image32 ( void )

The default constructor

◆ Image32() [2/3]

Image32::Image32 ( const Image32 & img )

The copy constructor copies pixel values

◆ Image32() [3/3]

Image32::Image32 ( Image32 && img )

The move constructor moves pixel ownership from the input to the new object.

◆ ~Image32()

Image32::~Image32 ( void )

The destructor deallocates memory associated with the image.

Member Function Documentation

◆ _assertInBounds()

void Image32::_assertInBounds	(	int	x,
		int	y
	)		const

private

The method validates that the pixel index is valid

◆ addRandomNoise()

Image32 Image32::addRandomNoise ( double noise ) const

This method outputs a new image image with random noise added to each pixel. The value of the input parameter should be in the range [0,1] representing the fraction of noise that should be added. The actual amount of noise added is in the range [-noise,noise].

◆ begin()

iterator Image::Image32::begin ( void )

inline

◆ BeierNeelyMorph()

Image32 Image32::BeierNeelyMorph	(	const Image32 &	source,
		const Image32 &	destination,
		const OrientedLineSegmentPairs &	olsp,
		double	timeStep
	)

static

This static method outputs the result a Beier-Neely morph. The method uses the set of line segment pairs to define correspondences between the source and destination image. The time-step parameter, in the range of [0,1], specifies the point in the morph at which the output image should be obtained.

◆ bilinearSample()

Pixel32 Image32::bilinearSample ( Util::Point2D p ) const

This method returns the value of the image, sampled at position p using bilinear-weighted sampling.

◆ blur3X3()

Image32 Image32::blur3X3 ( void ) const

This method outputs a blur of the image using a 3x3 mask.

◆ brighten()

Image32 Image32::brighten ( double brightness ) const

This method outputs a new image in which each pixel is brightened. The value of the input parameter is the scale by which the image should be brightened.

◆ composite()

Image32 Image32::composite ( const Image32 & overlay ) const

This method outputs an image that is a composite of the current image and the overlay. The method uses the values in the alpha-channel of the overlay image to determine how pixels should be blended.

◆ contrast()

Image32 Image32::contrast ( double contrast ) const

This method outputs a new image in which the contract has been changed. The value of the input parameter is the scale by which the contrast of the image should be changed.

◆ crop()

Image32 Image32::crop	(	int	x1,
		int	y1,
		int	x2,
		int	y2
	)		const

This method outputs a croppedimage. The values of the input parameters specify the corners of the cropping rectangle.

◆ CrossDissolve()

Image32 Image32::CrossDissolve	(	const Image32 &	source,
		const Image32 &	destination,
		double	blendWeight
	)

static

This static method outputs the cross-dissolve of two image. The method generates an image which is the blend of the source and destination, using the blend-weight in the range [0,1] to determine what faction of the source and destination images should be used to generate the final output.

◆ edgeDetect3X3()

Image32 Image32::edgeDetect3X3 ( void ) const

This method outpus a new image highlighting the edges in the input using a 3x3 mask.

◆ end()

iterator Image::Image32::end ( void )

inline

◆ floydSteinbergDither()

Image32 Image32::floydSteinbergDither ( int bits ) const

This method outputs a new image in which each pixel is represented by a fixed number of bits. The final pixel values are obtained by using Floyd-Steinberg dithering for propogating quantization errors. The value of the input parameter is the number of bits that should be used to represent a color component in the output image.

◆ funFilter()

Image32 Image32::funFilter ( void ) const

This method outputs the results of a fun-filter.

◆ gaussianSample()

Pixel32 Image32::gaussianSample	(	Util::Point2D	p,
		double	variance,
		double	radius
	)		const

This method returns the value of the image, sampled at position p using Gaussian-weighted sampling. The variance of the Gaussian and the radius over which the weighted summation is performed are specified by the parameters.

◆ height()

int Image32::height ( void ) const

This method returns the height of the image

◆ luminance()

Image32 Image32::luminance ( void ) const

This method outputs the gray-scale image.

◆ nearestSample()

Pixel32 Image32::nearestSample ( Util::Point2D p ) const

This method returns the value of the image, sampled at position p using nearest-point sampling.

◆ operator()() [1/2]

Pixel32 & Image32::operator()	(	int	x,
		int	y
	)

This method returns a reference to the indexed pixel. An exception is thrown if the index is out of bounds.

◆ operator()() [2/2]

const Pixel32 & Image32::operator()	(	int	x,
		int	y
	)		const

This method returns a reference to the indexed pixel. An exception is thrown if the index is out of bounds.

◆ operator=() [1/2]

Image32 & Image32::operator= ( const Image32 & img )

The copy assignment operator copies pixel values

◆ operator=() [2/2]

Image32 & Image32::operator= ( Image32 && img )

The move assignment operator moves pixel ownership from the input to the new object.

◆ orderedDither2X2()

Image32 Image32::orderedDither2X2 ( int bits ) const

This method outputs a new image in which each pixel is represented by a fixed number of bits. The final pixel values are obtained by using a 2x2 dithering matrix to determine how values should be quantized. The value of the input parameter is the number of bits that should be used to represent a color component in the output image.

◆ quantize()

Image32 Image32::quantize ( int bits ) const

This method outputs a new image in which each pixel is represented by a fixed number of bits. The final pixel values are obtained by quantizing. The value of the input parameter is the number of bits that should be used to represent a color component in the output image.

◆ randomDither()

Image32 Image32::randomDither ( int bits ) const

This method outputs a new image in which each pixel is represented by a fixed number of bits. The final pixel values are obtained by adding noise to the pixel color channels and then quantizing. The value of the input parameter is the number of bits that should be used to represent a color component in the output image.

◆ read()

void Image32::read ( std::string fileName )

This method reads in an image from the specified file. It uses the file extension to determine if the file should be read in as a BMP file or as a JPEG file.

◆ rotateBilinear()

Image32 Image32::rotateBilinear ( double angle ) const

This method outputs a rotated image which is obtained using bilinear sampling. The value of the input parameter is the angle of rotation (in degrees).

◆ rotateGaussian()

Image32 Image32::rotateGaussian ( double angle ) const

This method outputs a rotated image which is obtained using Gaussian sampling. The value of the input parameter is the angle of rotation (in degrees).

◆ rotateNearest()

Image32 Image32::rotateNearest ( double angle ) const

This method outputs a rotated image which is obtained using nearest-point sampling. The value of the input parameter is the angle of rotation (in degrees).

◆ saturate()

Image32 Image32::saturate ( double saturation ) const

This method outputs a new image in which the saturation of each pixel has been changed. The value of the input parameter is the scale by which the saturation of the pixel should be changed.

◆ scaleBilinear()

Image32 Image32::scaleBilinear ( double scaleFactor ) const

This method outputs a scaled image which is obtained using bilinear sampling. The value of the input parameter is the factor by which the image is to be scaled.

◆ scaleGaussian()

Image32 Image32::scaleGaussian ( double scaleFactor ) const

This method outputs a scaled image which is obtained using Gaussian sampling. The value of the input parameter is the factor by which the image is to be scaled.

◆ scaleNearest()

Image32 Image32::scaleNearest ( double scaleFactor ) const

This method outputs a scaled image which is obtained using nearest-point sampling. The value of the input parameter is the factor by which the image is to be scaled.

◆ setAlpha()

void Image32::setAlpha ( const Image32 & matte )

This method sets the alpha-channel of the current image using the information provided in the matte image. The method returns true if it has been implemented.

◆ setSize()

void Image32::setSize	(	int	width,
		int	height
	)

This method sets the dimension of the image.

◆ warp()

Image32 Image32::warp ( const OrientedLineSegmentPairs & olsp ) const

This method outputs a warped image using the correspondences defined by the line segment pairs.

◆ width()

int Image32::width ( void ) const

This method returns the width of the image

◆ write()

void Image32::write ( std::string fileName ) const

This method writes in an image out to the specified file. It uses the file extension to determine if the file should be written out as a BMP file or as a JPEG file.

Member Data Documentation

◆ _height

int Image::Image32::_height

private

◆ _pixels

Pixel32* Image::Image32::_pixels

private

The pixel values

◆ _width

int Image::Image32::_width

private

The dimensions of the image

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

Assignments/Image/image.h
Assignments/Image/image.cpp
Assignments/Image/image.todo.cpp

Classes

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Image32() [1/3]

◆ Image32() [2/3]

◆ Image32() [3/3]

◆ ~Image32()

Member Function Documentation

◆ _assertInBounds()

◆ addRandomNoise()

◆ begin()

◆ BeierNeelyMorph()

◆ bilinearSample()

◆ blur3X3()

◆ brighten()

◆ composite()

◆ contrast()

◆ crop()

◆ CrossDissolve()

◆ edgeDetect3X3()

◆ end()

◆ floydSteinbergDither()

◆ funFilter()

◆ gaussianSample()

◆ height()

◆ luminance()

◆ nearestSample()

◆ operator()() [1/2]

◆ operator()() [2/2]

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ orderedDither2X2()

◆ quantize()

◆ randomDither()

◆ read()

◆ rotateBilinear()

◆ rotateGaussian()

◆ rotateNearest()

◆ saturate()

◆ scaleBilinear()

◆ scaleGaussian()

◆ scaleNearest()

◆ setAlpha()

◆ setSize()

◆ warp()

◆ width()

◆ write()

Member Data Documentation

◆ _height

◆ _pixels

◆ _width