mrpt::utils::CMappedImage Class Reference

This class encapsulates a MRPT Image and allows the sampling of individual pixels with sub-pixel accuracy and with a change of coordinates (eg, meters). More...

#include <mrpt/utils/CMappedImage.h>

List of all members.

Public Member Functions
	CMappedImage (CMRPTImagePtr img, double x0=0, double x1=-1, double y0=0, double y1=-1, mrpt::vision::TInterpolationMethod method=mrpt::vision::imBILINEAR)
	Constructor: Must pass an image (as a smart pointer) and the coordinates of the border.
void	changeCoordinates (double x0, double x1, double y0, double y1)
	Changes the coordinates of the image (see constructor for the meaning).
double	getPixel (double x, double y) const
	Returns the interpolated pixel at the coordinates (x,y), in the range [0,255] (grayscale) If the point is out of the image, 0 is returned.
Protected Attributes
CMRPTImagePtr	m_img
double	m_x0
double	m_x1
double	m_y0
double	m_y1
double	m_pixel_size
	width * pixel_size = (x1-x0)
mrpt::vision::TInterpolationMethod	m_method

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Detailed Description

This class encapsulates a MRPT Image and allows the sampling of individual pixels with sub-pixel accuracy and with a change of coordinates (eg, meters).

Only work with graylevels (for convenience), so if a color image is passed it'll be passed first to grayscale.

See also:

CMRPTImage

Definition at line 43 of file CMappedImage.h.

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Constructor & Destructor Documentation

mrpt::utils::CMappedImage::CMappedImage	(	CMRPTImagePtr	img,
		double	x0 = 0,
		double	x1 = -1,
		double	y0 = 0,
		double	y1 = -1,
		mrpt::vision::TInterpolationMethod	method = mrpt::vision::imBILINEAR
	)

Constructor: Must pass an image (as a smart pointer) and the coordinates of the border.

Parameters:

	img	The image. A copy of the smart pointer is kept internally to this object.
	x0	Coordinate X of the left side (default: 0)
	x1	Coordinate X of the right side (or -1 to IMAGE_WIDTH-1)
	y0	Coordinate Y of the top side (default: 0)
	y1	Coordinate Y of the bottom side (or -1 to IMAGE_HEIGHT-1)
	method	The interpolation method: It can be imNEAREST, imBILINEAR or imBICUBIC.

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Member Function Documentation

void mrpt::utils::CMappedImage::changeCoordinates	(	double	x0,
		double	x1,
		double	y0,
		double	y1
	)

Changes the coordinates of the image (see constructor for the meaning).

double mrpt::utils::CMappedImage::getPixel	(	double	x,
		double	y
	)			const

Returns the interpolated pixel at the coordinates (x,y), in the range [0,255] (grayscale) If the point is out of the image, 0 is returned.

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Member Data Documentation

CMRPTImagePtr mrpt::utils::CMappedImage::m_img [protected]

Definition at line 46 of file CMappedImage.h.

mrpt::vision::TInterpolationMethod mrpt::utils::CMappedImage::m_method [protected]

Definition at line 49 of file CMappedImage.h.

double mrpt::utils::CMappedImage::m_pixel_size [protected]

width * pixel_size = (x1-x0)

Definition at line 48 of file CMappedImage.h.

double mrpt::utils::CMappedImage::m_x0 [protected]

Definition at line 47 of file CMappedImage.h.

double mrpt::utils::CMappedImage::m_x1 [protected]

Definition at line 47 of file CMappedImage.h.

double mrpt::utils::CMappedImage::m_y0 [protected]

Definition at line 47 of file CMappedImage.h.

double mrpt::utils::CMappedImage::m_y1 [protected]

Definition at line 47 of file CMappedImage.h.