function GetRGBChannel(ch: TIEChannel): TIEBitmap; overload; function GetRGBChannel(ch: TIEChannel; var AveragePct: Double): TIEBitmap; overload; procedure GetRGBChannel(BitmapR, BitmapG, BitmapB: TIEBitmap); overload;
Description
Return a Bitmap with the specified RGB channel or all three RGB channels. The resulting Bitmap is a gray level representation of the specified channel. ch is the RGB channel: iecRed, iecGreen, iecBlue. AveragePct returns the average value for that channel in the image.
To re-create the image from the RGB channel bitmaps, use SetFromRGBChannels.
Note: ◼If the image PixelFormat is not ie24RGB, it will be converted ◼You need to free the bitmap returned by GetRGBChannel()
// Load test image ImageEnView1.IO.LoadFromFile( 'D:\TestImage.jpg' );
// Return the Red channel of the image bmp1 := ImageEnView1.Proc.GetRGBChannel( iecRed );
// Return the Green channel of the image bmp1 := ImageEnView1.Proc.GetRGBChannel( iecGreen );
// Return the Blue channel of the image bmp1 := ImageEnView1.Proc.GetRGBChannel( iecBlue );
Overload 1 Example
blue := ImageEnView1.Proc.GetRGBChannel(iecBlue); green := ImageEnView1.Proc.GetRGBChannel(iecGreen); red := ImageEnView1.Proc.GetRGBChannel(iecRed);
ImageEnView2.IEBitmap.Assign(blue); // Show Blue channel ImageEnView3.IEBitmap.Assign(green); // Show Green channel ImageEnView4.IEBitmap.Assign(red); // Show Red channel