LBitmap::ChangeSaturation (original) (raw)

Summary

Increases or decreases the saturation of colors in the class object's bitmap.

Syntax

#include "ltwrappr.h"

virtual L_INT LBitmap::ChangeSaturation(nChange, uFlags = 0)

Parameters

L_INT nChange

Amount to change saturation. Values are percentages between -100 and +100.

L_UINT32 uFlags

Reserved for future use. Must be 0.

Returns

Comments

Negative values decrease the saturation of colors. Positive values increase the saturation. The saturation level is increased or decreased by a percentage of its present saturation level. For example, an increase of 20% of the current saturation level "L" will raise the new saturation level "L1" to a value L + 0.20 * L. Likewise, increasing the saturation level 100% doubles the saturation level ( L1 = L + 1.0 * L). Decreasing the saturation level 100% will set the new saturation level to 0. This process is carried out for every pixel.

To update a status bar or detect a user interrupt during execution of this function, refer to LBase::EnableStatusCallback.

This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available only in the Document/Medical toolkits.

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Change Saturation Function - Before

Change Saturation Function - After

View additional platform support for this Change Saturation function.

Required DLLs and Libraries

• LTDIS
• LTFIL
• LTIMGCLR
• For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions

• LBitmap::AdjustTint
• LBitmap::ColorHalfTone
• LBitmap::ChangeHue
• LBitmap::GammaCorrect
• LBitmap::HistoContrast
• LBitmap::StretchIntensity
• LBitmap::RemapIntensity
• LBitmap::Invert
• LBitmap::ChangeContrast
• LBitmap::ChangeIntensity
• LBitmap::HistoEqualize
• LBitmap::GetHistogram
• LBitmap::WindowLevel
• LBitmap::WindowLevelExt
• LBitmapBase::Fill
• LBitmapBase::GetPixelColor
• LBitmapBase::PutPixelColor
• Class Members

Topics

• Raster Image Functions: Modifying Intensity Values
• Correcting Colors
• Raster Image Functions: Changing Brightness and Contrast
• Raster Image Functions: Correcting Colors

Example

//ChangeSaturation

L_INT LBitmap__ChangeSaturationExample() { L_INT nRet; LBitmap m_Bitmap; nRet =m_Bitmap.Load(MAKE_IMAGE_PATH(TEXT("ImageProcessingDemo\\Image1.jpg")), 0,ORDER_BGR); if(nRet !=SUCCESS) return nRet; // Increase the Saturation nRet =m_Bitmap.ChangeSaturation(20); if(nRet !=SUCCESS) return nRet; return SUCCESS; }

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