ImageScrambler Class Reference

Inheritance diagram for ImageScrambler:

Public Member Functions
	ImageScrambler (QWidget *parent=0)
	Constructor.
	~ImageScrambler ()
	Destructor.
void	cropSwap (QImage &, int, int, int, int, int, int)
	Funtion that crop two squares of equal size of an image or sub image and swaps them. The funtion receives two coords (x0, y0) and (x1, y1) and a width and a height. Then swaps pixel by pixel the square formed from the top left coordinate (x0, y0) to the bottom right coordinate (x0+width, y0+height) with the square formed from the top left coordinate (x1, y1) to the bottom right (x1+width, y1+height). More...
QImage	ScrambleFilter (QImage image, int, int, int, int, int)
	Funtion that recursively scrambles an images by dividing the image in squares (sub images) and then swapping them. The first step the program does is divide the image in two or four squares and swap the squares, the resulting image is divided in four squares and then the same steps are applied recursively to each of the four squares. More...

Private Slots
void	on_btnLoadNewImage_clicked ()
	Function display a file browsing window to load an image into the GUI.
void	on_btnSave_clicked ()
	Function that saves the scrambled image in the computer.
void	on_btnScrambleImage_clicked ()
	Function invokes the ScrambleFilter function to scramble the image and load it in the GUI.
void	on_btnDescrambleImage_clicked ()
	Function that restore the scrambled image to the original image.
void	on_actionLoad_Image_triggered ()
	Function that invokes the on_btnLoadNewImage_clicked() function.
void	on_actionSave_Image_triggered ()
	Function that invokes the on_btnSave_clicked() function.
void	on_actionScramble_Image_triggered ()
	Function that invokes the on_btnScrambleImage_clicked() function.
void	on_actionDescramble_Image_triggered ()
	Function that invokes the on_btnDescrambleImage_clicked() function.

Private Attributes
Ui::ImageScrambler *	ui
QImage	originalImage
QImage	scrambledImage
int	scrambleDepth

Member Function Documentation

void ImageScrambler::cropSwap	(	QImage &	img,
		int	x0,
		int	y0,
		int	x1,
		int	y1,
		int	width,
		int	height
	)

Funtion that crop two squares of equal size of an image or sub image and swaps them. The funtion receives two coords (x0, y0) and (x1, y1) and a width and a height. Then swaps pixel by pixel the square formed from the top left coordinate (x0, y0) to the bottom right coordinate (x0+width, y0+height) with the square formed from the top left coordinate (x1, y1) to the bottom right (x1+width, y1+height).

Parameters

img	Reference to the image to swap the squares.
x0	The top left x coordinate of the first square in the image.
y0	The top left y coordinate of the first square in the image.
x1	The top left x coordinate of the second square in the image.
y1	The top left y coordinate of the second square in the image.
width	Width of the squares
height	Height of the squares

QImage ImageScrambler::ScrambleFilter	(	QImage	image,
		int	N,
		int	sx,
		int	sy,
		int	width,
		int	height
	)

Funtion that recursively scrambles an images by dividing the image in squares (sub images) and then swapping them. The first step the program does is divide the image in two or four squares and swap the squares, the resulting image is divided in four squares and then the same steps are applied recursively to each of the four squares.

Parameters

image	The image to scramble
N	The depth of the recursion. The image will be scrambled in 4^n squares.
sx	Starting left top x coordinate of the image or sub image to divide
sy	Starting left top y coodinate of the image or sub image to divide
width	Width of the received image
height	Height of the received image

Returns

the scrambled image

Member Data Documentation

QImage ImageScrambler::originalImage

private

the original image (imagen original)

int ImageScrambler::scrambleDepth

private

recursive depth (profundidad de la recursion)

QImage ImageScrambler::scrambledImage

private

scrambled image (imagen revuelta)

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

• ImageScrambler.h
• Filter.cpp
• ImageScrambler.cpp