NVIDIA Performance Primitives (NPP)
Version 9.2
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RGB to LUV color conversion. More...
Functions | |
NppStatus | nppiRGBToLUV_8u_C3R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst, int nDstStep, NppiSize oSizeROI) |
3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned packed LUV color conversion. More... |
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NppStatus | nppiRGBToLUV_8u_AC4R (const Npp8u *pSrc, int nSrcStep, Npp8u *pDst, int nDstStep, NppiSize oSizeROI) |
4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned packed LUV with alpha color conversion. More... |
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RGB to LUV color conversion.
Here is how NPP converts gamma corrected RGB or BGR to CIE LUV using the CIE XYZ D65 white point with a Y luminance of 1.0. The computed values of the L component are in the range [0..100], U component in the range [-134..220], and V component in the range [-140..122]. The code uses cbrtf() the 32 bit floating point cube root math function.
NppStatus nppiRGBToLUV_8u_AC4R | ( | const Npp8u * | pSrc, |
int | nSrcStep, | ||
Npp8u * | pDst, | ||
int | nDstStep, | ||
NppiSize | oSizeROI | ||
) |
4 channel 8-bit unsigned packed RGB with alpha to 4 channel 8-bit unsigned packed LUV with alpha color conversion.
pSrc | Source-Image Pointer. |
nSrcStep | Source-Image Line Step. |
pDst | Destination-Image Pointer. |
nDstStep | Destination-Image Line Step. |
oSizeROI | Region-of-Interest (ROI). |
NppStatus nppiRGBToLUV_8u_C3R | ( | const Npp8u * | pSrc, |
int | nSrcStep, | ||
Npp8u * | pDst, | ||
int | nDstStep, | ||
NppiSize | oSizeROI | ||
) |
3 channel 8-bit unsigned packed RGB to 3 channel 8-bit unsigned packed LUV color conversion.
pSrc | Source-Image Pointer. |
nSrcStep | Source-Image Line Step. |
pDst | Destination-Image Pointer. |
nDstStep | Destination-Image Line Step. |
oSizeROI | Region-of-Interest (ROI). |