Color Space Transform and Channel Extraction
[Image manipulation]

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Detailed Description

Functions to convert color space and to extract color channel

Functions
FLGR_Ret	flgr1d_color_convert_RGB_YUV (FLGR_Data1D *datdest, FLGR_Data1D *datsrc)
FLGR_Ret	flgr1d_color_convert_YUV_RGB (FLGR_Data1D *datdest, FLGR_Data1D *datsrc)
FLGR_Ret	flgr2d_color_convert_RGB_YUV (FLGR_Data2D *datdest, FLGR_Data2D *datsrc)
FLGR_Ret	flgr2d_color_convert_YUV_RGB (FLGR_Data2D *datdest, FLGR_Data2D *datsrc)

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Function Documentation

FLGR_Ret flgr1d_color_convert_RGB_YUV	(	FLGR_Data1D *	datdest,
		FLGR_Data1D *	datsrc
	)

Convert YUV channels to RGB channels

RGB sample must be stored in memory : R0 G0 B0 R1 G2 B2 R3 G3 ... YUV sample will be stored in memory : Y0 U0 V0 Y1 U2 V2 Y3 U3 ...

Conversion matrix used for unsigned 8 bits :

Conversion matrix used for all others types :

• FLGR_UINT8 :
  • No internal float conversion performed
  • R,G,B,Y in [0 ; 2^8-1]
  • U in [0 ; 2^8-1]
  • V in [0 ; 2^8-1]

• FLGR_UINT16 :
  • internal float conversion performed
  • R,G,B,Y in [0 ; 2^16-1]
  • U in [0 ; 2^16-1]
  • V in [0 ; 2^16-1]

• FLGR_UINT32 :
  • internal float conversion performed
  • R,G,B,Y in [0 ; 2^32-1]
  • U in [0 ; 2^32-1]
  • V in [0 ; 2^32-1]

• FLGR_INT8 :
  • internal float conversion performed
  • R,G,B,Y in [-2^7 ; 2^7-1]
  • U in [-2^7 ; 2^7-1]
  • V in [-2^7 ; 2^7-1]

• FLGR_INT16 :
  • internal float conversion performed
  • R,G,B,Y in [-2^15 ; 2^15-1]
  • U in [-2^15 ; 2^15-1]
  • V in [-2^15 ; 2^15-1]

• FLGR_INT32 :
  • internal float conversion performed

R,G,B,Y in [-2^31 ; 2^31-1]

• U in [-2^31 ; 2^31-1]
• V in [-2^31 ; 2^31-1]

• FLGR_FLOAT32 and FLGR_FLOAT64 :
  • R,G,B,Y in [0 ; 1]
  • U in [-0.436 ; 0.436]
  • V in [-0.615 ; 0.615]

Parameters:

	datdest	: pointer to a FLGR_Data1D
	datsrc	: pointer to a FLGR_Data1D

Returns:

FLGR_RET_OK, ...

Definition at line 500 of file flgrImageColorSpace.c.

FLGR_Ret flgr1d_color_convert_YUV_RGB	(	FLGR_Data1D *	datdest,
		FLGR_Data1D *	datsrc
	)

Convert RGB channels to YUV channels

RGB sample must be stored in memory : R0 G0 B0 R1 G2 B2 R3 G3 ... YUV sample will be stored in memory : Y0 U0 V0 Y1 U2 V2 Y3 U3 ...

Conversion matrix used for unsigned 8 bits :

Conversion matrix used for all others types :

• FLGR_UINT8 :
  • internal FGLR_UINT16 conversion performed
  • R,G,B,Y in [0 ; 2^8-1]
  • U in [0 ; 2^8-1]
  • V in [0 ; 2^8-1]

• FLGR_UINT16 :
  • internal float conversion performed
  • R,G,B,Y in [0 ; 2^16-1]
  • U in [0 ; 2^16-1]
  • V in [0 ; 2^16-1]

• FLGR_UINT32 :
  • internal float conversion performed
  • R,G,B,Y in [0 ; 2^32-1]
  • U in [0 ; 2^32-1]
  • V in [0 ; 2^32-1]

• FLGR_INT8 :
  • internal float conversion performed
  • R,G,B,Y in [-2^7 ; 2^7-1]
  • U in [-2^7 ; 2^7-1]
  • V in [-2^7 ; 2^7-1]

• FLGR_INT16 :
  • internal float conversion performed
  • R,G,B,Y in [-2^15 ; 2^15-1]
  • U in [-2^15 ; 2^15-1]
  • V in [-2^15 ; 2^15-1]

• FLGR_INT32 :
  • internal float conversion performed
  • R,G,B,Y in [-2^31 ; 2^31-1]
  • U in [-2^31 ; 2^31-1]

V in [-2^31 ; 2^31-1]

• FLGR_FLOAT32 and FLGR_FLOAT64 :
  • R,G,B,Y in [0 ; 1]
  • U in [-0.436 ; 0.436]
  • V in [-0.615 ; 0.615]

Parameters:

	datdest	: destination YUV image (spp=3)
	datsrc	: source RGB image (spp=3)

Definition at line 255 of file flgrImageColorSpace.c.

FLGR_Ret flgr2d_color_convert_RGB_YUV	(	FLGR_Data2D *	datdest,
		FLGR_Data2D *	datsrc
	)

Convert YUV channels to RGB channels

Parameters:

	datdest
	datsrc

See also:

flgr1d_color_convert_RGB_YUV

Definition at line 657 of file flgrImageColorSpace.c.

FLGR_Ret flgr2d_color_convert_YUV_RGB	(	FLGR_Data2D *	datdest,
		FLGR_Data2D *	datsrc
	)

Convert RGB channels to YUV channels

Parameters:

	datdest
	datsrc

See also:

flgr1d_color_convert_YUV_RGB

Definition at line 573 of file flgrImageColorSpace.c.