public long ImageFileDirectoryOffset { get; set; }
@property (nonatomic, assign) unsigned long imageFileDirectoryOffset;
public long getImageFileDirectoryOffset()
public void setImageFileDirectoryOffset(long value)
ImageFileDirectoryOffset # get and set (CodecsTiffSaveOptions)
The default value is 0
The offset within a TIFF file where the page starts.
This serves as a reference page for saving pages from a large TIFF file.
The value of the UseImageFileDirectoryOffset must be set to true in order for the toolkit to use the ImageFileDirectoryOffset value when saving TIFF images.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void CodecsTiffOptionsExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "OCR1.TIF");
// Get all Information about the Tiff file that you want to load.
CodecsImageInfo imageInfo = codecs.GetInformation(srcFileName, true);
if (imageInfo.Tiff.IsImageFileDirectoryOffsetValid)
{
codecs.Options.Tiff.Load.ImageFileDirectoryOffset = imageInfo.Tiff.ImageFileDirectoryOffset;
codecs.Options.Tiff.Save.ImageFileDirectoryOffset = imageInfo.Tiff.ImageFileDirectoryOffset;
}
// CodecsTiffOptions & CodecsTiffLoadOptions reference
codecs.Options.Tiff.Load.UseImageFileDirectoryOffset = imageInfo.Tiff.IsImageFileDirectoryOffsetValid;
codecs.Options.Tiff.Save.UseImageFileDirectoryOffset = imageInfo.Tiff.IsImageFileDirectoryOffsetValid;
codecs.Options.Tiff.Load.IgnorePhotometricInterpretation = true;
codecs.Options.Tiff.Load.IgnoreViewPerspective = false;
codecs.Options.Tiff.Load.UseFastConversion = false;
RasterImage image = codecs.Load(srcFileName);
codecs.Options.Tiff.Save.NoPalette = imageInfo.Tiff.HasNoPalette;
codecs.Options.Tiff.Save.PreservePalette = imageInfo.Tiff.HasNoPalette;
// Set the tiffSave options
// CodecsTiffSaveOptions reference
codecs.Options.Tiff.Save.NoPageNumber = false;
codecs.Options.Tiff.Save.NoSubFileType = false;
codecs.Options.Tiff.Save.UsePhotometricInterpretation = true;
codecs.Options.Tiff.Save.PhotometricInterpretation = CodecsTiffPhotometricInterpretation.YcbCr;
codecs.Options.Tiff.Save.UseTileSize = true;
codecs.Options.Tiff.Save.TileHeight = 200;
codecs.Options.Tiff.Save.TileWidth = 200;
codecs.Options.Tiff.Save.NoLzwAutoClear = false;
codecs.Options.Tiff.Save.SavePlanar = false;
codecs.Options.Tiff.Save.UsePredictor = false;
// make the output file have the same format as the input, so Tiff->Tiff, BigTiff->BigTiff
codecs.Options.Tiff.Save.BigTiff = imageInfo.Tiff.IsBigTiff;
//saving the image
codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "testtiff1.TIF"), RasterImageFormat.Tif, image.BitsPerPixel, 1, image.PageCount, 1, CodecsSavePageMode.Overwrite);
//change some tiffsave options.
codecs.Options.Tiff.Save.NoPageNumber = true;
codecs.Options.Tiff.Save.NoSubFileType = true;
codecs.Options.Tiff.Save.UsePhotometricInterpretation = false;
codecs.Options.Tiff.Save.UseTileSize = false;
codecs.Options.Tiff.Save.NoPalette = false;
codecs.Options.Tiff.Save.PreservePalette = true;
codecs.Options.Tiff.Save.PhotometricInterpretation = CodecsTiffPhotometricInterpretation.Palette;
//save the image with different name.
codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "testtiff2.TIF"), RasterImageFormat.CcittGroup4, image.BitsPerPixel, 1, image.PageCount, 1, CodecsSavePageMode.Overwrite);
// Clean up
image.Dispose();
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
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