gray2rgb

Grayscale to RGB colorspace converter. More...

Functions
AFAPI array	gray2rgb (const array &in, const float rFactor=1.0, const float gFactor=1.0, const float bFactor=1.0)
	C++ Interface for gray to RGB conversion. More...
AFAPI af_err	af_gray2rgb (af_array *out, const af_array in, const float rFactor, const float gFactor, const float bFactor)
	C Interface for converting gray to RGB. More...

Detailed Description

Grayscale to RGB colorspace converter.

Grayscale is a single channel color space where pixel value ranges from 0 to 1. Zero represents black, one represent white and any value between zero & one is a gray value

RGB (Red, Green, Blue) is the most common format used in computer imaging. RGB stores individual values for red, green and blue, and hence the 3 values per pixel. A combination of these three values produces the gamut of unique colors.

The grayscale internsity of a pixel is calculated using the following formula

   \f$R = rFactor * intensity\f$

   \f$G = gFactor * intensity\f$

   \f$B = bFactor * intensity\f$

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Function Documentation

af_gray2rgb()

AFAPI af_err af_gray2rgb	(	af_array *	out,
		const af_array	in,
		const float	rFactor,
		const float	gFactor,
		const float	bFactor
	)

C Interface for converting gray to RGB.

Parameters

[out]	out	is an array in target color space
[in]	in	is an array in the Grayscale color space
[in]	rFactor	is percentage of intensity value contributing to red channel
[in]	gFactor	is percentage of intensity value contributing to green channel
[in]	bFactor	is percentage of intensity value contributing to blue channel

Returns

AF_SUCCESS if the color transformation is successful, otherwise an appropriate error code is returned.

Note

in must be two dimensional for Grayscale to RGB conversion.

gray2rgb()

AFAPI array gray2rgb	(	const array &	in,
		const float	rFactor = 1.0,
		const float	gFactor = 1.0,
		const float	bFactor = 1.0
	)

C++ Interface for gray to RGB conversion.

Parameters

[in]	in	is an array in the Grayscale colorspace
[in]	rFactor	is percentage of intensity value contributing to red channel
[in]	gFactor	is percentage of intensity value contributing to green channel
[in]	bFactor	is percentage of intensity value contributing to blue channel

Returns

array in RGB colorspace

Note

in must be two dimensional for Grayscale to RGB conversion.