GammaCorrect method (Main Control)
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Builder Syntax |
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Delphi Syntax |
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Overview |
Refer to Changing Brightness and Contrast. |
Remarks
Adjusts the intensity of colors in the bitmap by changing the gamma constant that is used to map the intensity values.
Intensity values ideally follow a logarithmic progression, because the eye perceives changes in intensity as being equal when the ratio of change is equal. For example, we would see a change from 0.1 to 0.2 as being equal to a change from 0.2 to 0.4.
Gamma is a standard constant that is used to calculate the progression. For most CRTs the gamma constant is in the range of 2.2 to 2.5.
This method supports 12 and 16-bit grayscale images and 48 and 64-bit color images. Support for 12 and 16-bit grayscale images and 48 and 64-bit color images is available only in the Document/Medical toolkits.
See Also
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Elements: |
Intensity method, Contrast method, HistoContrast method, HistoEqualize method, StretchIntensity method |
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Topics: |
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