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gray2rgb
Complete List of ArrayFire Functions ArrayFire Functions by Category » Image Processing » | Colorspace conversions

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

\(R = rFactor * intensity\)

\(G = gFactor * intensity\)

\(B = bFactor * intensity\)

## Function Documentation

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.

AFAPI array af::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.