Overloads Public Function LoadCmykPlanes( _
   ByVal stream As Stream, _
   ByVal bitsPerPixel As Integer, _
   ByVal page As Integer _
) As RasterImage

Visual Basic (Usage)	Copy Code
Dim instance As RasterCodecs Dim stream As Stream Dim bitsPerPixel As Integer Dim page As Integer Dim value As RasterImage   value = instance.LoadCmykPlanes(stream, bitsPerPixel, page)

public RasterImage LoadCmykPlanes( 
   Stream stream,
   int bitsPerPixel,
   int page
)

public:
RasterImage^ LoadCmykPlanes( 
   Stream^ stream,
   int bitsPerPixel,
   int page
) 

Parameters

stream

A System.IO.Stream containing the data of the image file to load. The image data must be CMYK, otherwise the method will fail and throw an exception.

bitsPerPixel

Resulting image pixel depth. Possible values are:

Value	Meaning
8	Each plane will be a grayscale 8 bis per pixel image.
16	Each plane will be a grayscale 16 bits per pixel image.

page

1-based index of the page from which the planes should be loaded.

Return Value

If the data does not have to be loaded as CMYK, use RasterCodecs.Load or RasterCodecs.LoadAsync.

Support for 16-bit grayscale images is only available in the Document/Medical Imaging editions.

This method will fail if the input file is not TIFF CMYK. Note that not all the pages should be CMYK - it is enough if only the page that you wish to load is CMYK.

Only the following memory load options are supported by this method:

• RasterCodecs.Options.Load.AllocateImage
• RasterCodecs.Options.Load.StoreDataInImage
• RasterCodecs.Options.Load.SuperCompressed

This method uses the values of RasterCodecs.Options.Tiff.Load.ImageFileDirectoryOffset.

If the image being loaded contains alpha channel information, it will be stored in the 5th page of the returned image.

Use RasterImagePainter.PaintCmykPlanes to display the array and SaveCmykArray to save an image as a CMYK TIFF file.

If you want to convert the CMYK array to a regular BGR image and use the other methods or save to a file format other than TIFF CMYK, use ColorMergeCommand and set the ColorMergeCommand.Type to ColorMergeCommandType.Cmyk.

If you have an alpha image, use RasterImage.SetAlphaImage to set the alpha image.

You can apply image processing on each individual image. This allows you to process each color plane separately.

If you want to load a non-CMYK file as an array of color plane, use the normal RasterCodecs.Load or RasterCodecs.LoadAsync methods and then use ColorSeparateCommand and RasterImage.CreateAlphaImage method.

Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

Reference