core/vil/algo/vil_colour_space.cxx File Reference

#include "vil_colour_space.h"
#include <vcl_cstdlib.h>
#include <vcl_algorithm.h>
#include <vcl_cmath.h>

Go to the source code of this file.

Defines
#define	inst(T)
Functions
template<class T >
void	vil_colour_space_RGB_to_YIQ (T const in[3], T out[3])
	Linear transformation from RGB to YIQ colour spaces.
template<class T >
void	vil_colour_space_YIQ_to_RGB (T const in[3], T out[3])
	Linear transformation from YIQ to RGB colour spaces.
template<class T >
void	vil_colour_space_RGB_to_HSV (T r, T g, T b, T *h, T *s, T *v)
	Transform from RGB to HSV colour spaces.
template<class T >
void	vil_colour_space_HSV_to_RGB (T h, T s, T v, T *r, T *g, T *b)
	Transform from HSV to RGB colour space.
template<class T >
void	vil_colour_space_RGB_to_YUV (T const in[3], T out[3])
	Linear transformation from RGB to YUV colour spaces.
template<class T >
void	vil_colour_space_YUV_to_RGB (T const in[3], T out[3])
	Linear transformation from YUV to RGB colour spaces.
template<class T >
void	vil_colour_space_RGB_to_YPbPr_601 (T const RGB[3], T YPbPr[3])
	Transformation from analog RGB to analog YPbPr colour spaces.
template<class T >
void	vil_colour_space_YPbPr_601_to_RGB (T const YPbPr[3], T RGB[3])
	Transformation from analog YPbPr to RGB colour spaces.
void	vil_colour_space_RGB_to_YCbCr_601 (const unsigned char RGB[3], unsigned char YCbCr[3])
	Transformation from 8 bit RGB to 8 bit YCbCr colour spaces.
void	vil_colour_space_YCbCr_601_to_RGB (const unsigned char YCbCr[3], unsigned char RGB[3])
	Transformation from 8 bit YCbCr to 8 bit RGB colour spaces.
	inst (double)
	inst (float)

---

Detailed Description

Author:

fsm

Definition in file vil_colour_space.cxx.

---

Define Documentation

#define inst

(

T

)

Value:

template void vil_colour_space_RGB_to_YIQ(T const [3], T [3]); \
template void vil_colour_space_YIQ_to_RGB(T const [3], T [3]); \
template void vil_colour_space_RGB_to_HSV(T, T, T, T *, T *, T *); \
template void vil_colour_space_HSV_to_RGB(T, T, T, T *, T *, T *); \
template void vil_colour_space_RGB_to_YUV(T const [3], T [3]); \
template void vil_colour_space_YUV_to_RGB(T const [3], T [3]); \
template void vil_colour_space_RGB_to_YPbPr_601(T const RGB[3], T YPbPr[3]); \
template void vil_colour_space_YPbPr_601_to_RGB(T const YPbPr[3], T RGB[3])

Definition at line 240 of file vil_colour_space.cxx.

---

Function Documentation

inst

(

double

)

inst

(

float

)

template<class T >

void vil_colour_space_HSV_to_RGB	(	T	h,
		T	s,
		T	v,
		T *	r,
		T *	g,
		T *	b
	)

Transform from HSV to RGB colour space.

The input HSV values will lie in the ranges: H : [0, 360) (an angle, in bloody degrees) S : [0, 1] V : [0, 255]

The output RGB values will lie in [0, 255]

[HSV is also known as HSB]

Definition at line 76 of file vil_colour_space.cxx.

template<class T >

void vil_colour_space_RGB_to_HSV	(	T	r,
		T	g,
		T	b,
		T *	h,
		T *	s,
		T *	v
	)

Transform from RGB to HSV colour spaces.

       green --- yellow     //
      /    \     /     \    //
   cyan --- white ---- red  //
      \    /     \     /    //
       blue  --- magenta    //
                            //
   

Definition at line 41 of file vil_colour_space.cxx.

void vil_colour_space_RGB_to_YCbCr_601	(	const unsigned char	RGB[3],
		unsigned char	YCbCr[3]
	)

Transformation from 8 bit RGB to 8 bit YCbCr colour spaces.

The input and out value lie in the ranges:

• R'd, G'd, B'd in {0, 1, 2, ..., 255}
• Y' in {16, 17, ..., 235} with * footroom in {1, 2, ..., 15} * headroom in {236, 237, ..., 254} * sync. in {0, 255}
• Cb, Cr in {16, 17, ..., 240}

Definition at line 211 of file vil_colour_space.cxx.

template<class T >

void vil_colour_space_RGB_to_YIQ	(	T const	in[3],
		T	out[3]
	)

Linear transformation from RGB to YIQ colour spaces.

Definition at line 15 of file vil_colour_space.cxx.

template<class T >

void vil_colour_space_RGB_to_YPbPr_601	(	T const	RGB[3],
		T	YPbPr[3]
	)

Transformation from analog RGB to analog YPbPr colour spaces.

The input and out value lie in the ranges:

• R', G', B' in [0; 1]
• Y' in [0; 1]
• Pb in [-0.5; 0.5]
• Pr in [-0.5; 0.5]

Definition at line 174 of file vil_colour_space.cxx.

template<class T >

void vil_colour_space_RGB_to_YUV	(	T const	in[3],
		T	out[3]
	)

Linear transformation from RGB to YUV colour spaces.

Definition at line 144 of file vil_colour_space.cxx.

void vil_colour_space_YCbCr_601_to_RGB	(	const unsigned char	YCbCr[3],
		unsigned char	RGB[3]
	)

Transformation from 8 bit YCbCr to 8 bit RGB colour spaces.

The input and out value lie in the ranges:

• Y' in {16, 17, ..., 235} with * footroom in {1, 2, ..., 15} * headroom in {236, 237, ..., 254} * sync. in {0, 255}
• Cb, Cr in {16, 17, ..., 240}
• R'd, G'd, B'd in {0, 1, 2, ..., 255}

Definition at line 227 of file vil_colour_space.cxx.

template<class T >

void vil_colour_space_YIQ_to_RGB	(	T const	in[3],
		T	out[3]
	)

Linear transformation from YIQ to RGB colour spaces.

Definition at line 23 of file vil_colour_space.cxx.

template<class T >

void vil_colour_space_YPbPr_601_to_RGB	(	T const	YPbPr[3],
		T	RGB[3]
	)

Transformation from analog YPbPr to RGB colour spaces.

The input and out value lie in the ranges:

• Y' in [0; 1]
• Pb in [-0.5; 0.5]
• Pr in [-0.5; 0.5]
• R', G', B' in [0; 1]

Definition at line 192 of file vil_colour_space.cxx.

template<class T >

void vil_colour_space_YUV_to_RGB	(	T const	in[3],
		T	out[3]
	)

Linear transformation from YUV to RGB colour spaces.

Definition at line 153 of file vil_colour_space.cxx.