public enum AutoColorLevelCommandType
Public Enum AutoColorLevelCommandType
typedef NS_ENUM(NSInteger, LTAutoColorLevelCommandType)
public enum AutoColorLevelCommandType
public enum class AutoColorLevelCommandType
Value | Member | Description |
---|---|---|
0 | None | No change. |
1 | Level | Perform leveling on the individual R, G and B channels, treating each of the R, G and B channels as a separate entity. It introduces color cast on the image. |
2 | Contrast | Perform leveling on the Master channel (the grayscale values of the pixels). No color cast will be introduced.
In order to speed up widely used image processing filters in LEADTOOLS, the grayscale value (master channel) of a colored image is calculated using the following formulas: #define CalcGrayValue(r, g, b) ((L_UCHAR)(((L_UCHAR) (((2 * (L_UINT) (r)) + (5 * (L_UINT) (g)) + (L_UINT) (b) + 4) / 8)))) #define CalcGrayValue16(r, g, b) ((L_UINT16) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8)) #define CalcGrayValue32(r, g, b) ((L_UINT32) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8)) |
3 | Intensity | Perform leveling on the RGB channel (the sum of the R, G, and B channels). No color cast will be introduced. |
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