Splitting a Multi-page TIFF File (Visual Basic)

The following steps show how to loop through all pages of a multi-page TIFF file and extract each page, process it individually, and save it into a separate file.

1.	Declare the following variables:

Dim RasterIO As New LEADRasterIO
Dim rasterImage As New LEADRaster
Dim rasterProcess As New LEADRasterProcess
Dim nPageNumber As Integer

2.	Find out the number of pages in the file:

RasterIO.GetFileInfo rasterImage, "MultiPage.tif", 1, FILEINFO_TOTALPAGES

3.	Loop through the pages of the file; perform a specific processing on the image, then save each page into a separate file:

For nPageNumber = 1 To RasterIO.InfoTotalPages
    ' Load the next image in the loop
    RasterIO.Load rasterImage, "MultiPage.tif", 0, nPageNumber, 1

    ' Perform desired processing on the page, such as flipping it
    rasterProcess.Flip rasterImage

    ' Save the page to a separate file
    RasterIO.Save rasterImage, "PageNumber" + Format(nPageNumber, "0000") + ".tif", FILE_TIFLZW, 0, 0, SAVE_OVERWRITE
Next nPageNumber