Contrast stretching

Functions
VISP_EXPORT void	vp::stretchContrast (vpImage< unsigned char > &I)
VISP_EXPORT void	vp::stretchContrast (const vpImage< unsigned char > &I1, vpImage< unsigned char > &I2)
VISP_EXPORT void	vp::stretchContrast (vpImage< vpRGBa > &I)
VISP_EXPORT void	vp::stretchContrast (const vpImage< vpRGBa > &I1, vpImage< vpRGBa > &I2)
VISP_EXPORT void	vp::stretchContrastHSV (vpImage< vpRGBa > &I)
VISP_EXPORT void	vp::stretchContrastHSV (const vpImage< vpRGBa > &I1, vpImage< vpRGBa > &I2)

Detailed Description

Contrast stretching.

Function Documentation

stretchContrast() [1/4]

void vp::stretchContrast

(

vpImage< unsigned char > &

I

)

Stretch the contrast of a grayscale image.

Parameters

I	: The grayscale image to stretch the contrast.

Examples:

testImgproc.cpp, and tutorial-contrast-sharpening.cpp.

Definition at line 418 of file vpImgproc.cpp.

References vpImage< Type >::getMinMaxValue(), and vpImage< Type >::performLut().

Referenced by vp::stretchContrast().

stretchContrast() [2/4]

void vp::stretchContrast	(	const vpImage< unsigned char > &	I1,
		vpImage< unsigned char > &	I2
	)

Stretch the contrast of a grayscale image.

Parameters

I1	: The first input grayscale image.
I2	: The second output grayscale image.

Definition at line 447 of file vpImgproc.cpp.

References vp::stretchContrast().

stretchContrast() [3/4]

void vp::stretchContrast

(

vpImage< vpRGBa > &

I

)

Stretch the contrast of a color image.

Parameters

I	: The color image to stretch the contrast.

Definition at line 461 of file vpImgproc.cpp.

References vpRGBa::A, vpRGBa::B, vpRGBa::G, vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), vpImage< Type >::performLut(), vpRGBa::R, and vpImageConvert::split().

stretchContrast() [4/4]

void vp::stretchContrast	(	const vpImage< vpRGBa > &	I1,
		vpImage< vpRGBa > &	I2
	)

Stretch the contrast of a color image.

Parameters

I1	: The first input color image.
I2	: The second output color image.

Definition at line 540 of file vpImgproc.cpp.

References vp::stretchContrast().

stretchContrastHSV() [1/2]

void vp::stretchContrastHSV

(

vpImage< vpRGBa > &

I

)

Stretch the contrast of a color image in the HSV color space. The saturation and value components are stretch so the hue is preserved.

Parameters

I	: The color image to stetch the contrast in the HSV color space.

Examples:

testImgproc.cpp, and tutorial-contrast-sharpening.cpp.

Definition at line 555 of file vpImgproc.cpp.

References vpImage< Type >::bitmap, vpImage< Type >::getHeight(), vpImage< Type >::getWidth(), vpImageConvert::HSVToRGBa(), and vpImageConvert::RGBaToHSV().

Referenced by vp::stretchContrastHSV().

stretchContrastHSV() [2/2]

void vp::stretchContrastHSV	(	const vpImage< vpRGBa > &	I1,
		vpImage< vpRGBa > &	I2
	)

Stretch the contrast of a color image in the HSV color space. The saturation and value components are stretch so the hue is preserved.

Parameters

I1	: The first input color image.
I2	: The second output color image.

Definition at line 608 of file vpImgproc.cpp.

References vp::stretchContrastHSV().