LEADTOOLS Raster imaging C++ Class library help
| LEADTOOLS Raster Imaging C++ Class Library Help > LEADTOOLS Raster Imaging Features > Processing an Image > Used Structures > LVLCLRINF |
typedef struct _LVLCLRINF
{
L_INT nMinInput;
L_INT nMaxInput;
L_INT nMinOutput;
L_INT nMaxOutput;
L_UINT uGamma;
} LVLCLRINF, *pLVLCLRINF;
The LVLCLRINF structure contains color-leveling information for a specific color channel.
|
Member |
Description |
|
nMinInput |
Value that specifies the image©s shadows to be mapped. Valid values range from 0 to 255 for 8-bit, 0 to 4095 for 12-bit, 0 to 65535 for 16-bit images, and from -32768 to 32767 for signed images. Any value greater than or equal to this will be considered a shadow and will be remapped to the value in nMinOutput. |
|
nMaxInput |
Value that specifies the image©s highlights to be mapped. Valid values range from 0 to 255 for 8-bit, 0 to 4095 for 12-bit, 0 to 65535 for 16-bit images, and from -32768 to 32767 for signed images. Any value greater than or equal to this will be considered a highlight and will be remapped to the value in nMaxOutput. |
|
nMinOutput |
Value that specifies the value to which the shadows will be mapped. Valid values range from 0 to 255 for 8-bit, 0 to 4095 for 12-bit, 0 to 65535 for 16-bit images, and from -32768 to 32767 for signed images. |
|
nMaxOutput |
Value that specifies the value to which the highlights will be mapped. Valid values range from 0 to 255 for 8-bit, 0 to 4095 for 12-bit, 0 to 65535 for 16-bit images, and from -32768 to 32767 for signed images. |
|
uGamma |
Value that represents the gamma value. This value is used to modify the midtones of the image. The value in this member is a 100 times the actual value. Therefore, if uGamma = 167 then the actual gamma value is 1.67. Likewise, if you want to use a gamma of 1.75, set this member to 175. The default value is DEFAULT_GAMMA, which is 100 (actual gamma value of 1.00) which does not change the gamma value of the image. |
Comments
The value of the nMaxInput member must be greater than the value of the nMinInputValue member by at least 2.
If nMinOutput > nMaxOutput then the image©s shadows and highlights will be inverted for the given channel.
This structure is used by the LVLCLR structure.
