TImageEnProc.GetHSVChannel

Declaration

function GetHSVChannel(Channel: Integer): TIEBitmap; overload;
procedure GetHSVChannel(BitmapH, BitmapS, BitmapV: TIEBitmap); overload;

Description

Return a Bitmap with the specified HSV channel or all channels. The resulting Bitmap is a gray level representation of the specified channel.

Channel is the HSV channel. You can use the following constants:

Note:
◼If the image PixelFormat is not ie24RGB, it will be converted
◼You need to free the bitmap returned by GetHSVChannel()

Demos

Image Testing

// Load test image
ImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );

  

// Return the Hue channel of the image
bmp1 := ImageEnView1.Proc.GetHSVChannel( HSV_Hue );

  

// Return the Saturation channel of the image
bmp1 := ImageEnView1.Proc.GetHSVChannel( HSV_Sat );

  

// Return the Value channel of the image
bmp1 := ImageEnView1.Proc.GetHSVChannel( HSV_Val );

  

Example

HueBMP := ImageEnView1.Proc.GetHSVChannel( HSV_Hue );
SatBMP := ImageEnView1.Proc.GetHSVChannel( HSV_Sat );
ValBMP := ImageEnView1.Proc.GetHSVChannel( HSV_Val );

ImageEnView2.IEBitmap.Assign(HueBMP); // copy Hue channel
ImageEnView3.IEBitmap.Assign(SatBMP); // copy Saturation channel
ImageEnView4.IEBitmap.Assign(ValBMP); // copy Value channel

HueBMP.Free;
SatBMP.Free;
ValBMP.Free;

ImageEnView2.Update();
ImageEnView3.Update();
ImageEnView4.Update();

// Which is the same as...

ImageEnView1.Proc.GetHSVChannel( ImageEnView2.IEBitmap, ImageEnView3.IEBitmap, ImageEnView4.IEBitmap);
ImageEnView2.Update();
ImageEnView3.Update();
ImageEnVIew4.Update();

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