How to save image with the same encoder settings?

In This Topic

Sometimes it is necessary to load an image from file, change the image and save changed image to a file with the settings, which was used for encoding the source image.
SDK allows to get the settings, which was used for encoding an image, using the following methods:

The EncoderBase.CreateSettingsFromImage method returns the encoder settings, which was used for encoding the specified image.
The EncoderBase.SetSettingsFromImage method sets the encoder settings similar to the encoder settings, which was used for encoding the specified image.

Here is C#/VB.NET code that shows how to save image with the same encoder settings which was used for encoding source image:

// open a TIFF file
using (System.IO.FileStream fStream = new System.IO.FileStream(
     "multipage.tif",
     System.IO.FileMode.Open,
     System.IO.FileAccess.ReadWrite))
{
    // create an image collection
    Vintasoft.Imaging.ImageCollection images =
        new Vintasoft.Imaging.ImageCollection();
    // add images from the stream to the image collection
    images.Add(fStream);

    // rotate the second page of TIFF file
    images[1].Rotate(90);

    // create a TIFF encoder
    using (Vintasoft.Imaging.Codecs.Encoders.EncoderBase encoder =
        Vintasoft.Imaging.Codecs.Encoders.AvailableEncoders.CreateEncoder("multipage.tif"))
    {
        // specify that encoder must switch the image source to the saved file
        encoder.SaveAndSwitchSource = true;
        // set the encoder settings similar to the settings, which was used for encoding the first page of TIFF file
        encoder.SetSettingsFromImage(images[0]);
        // save changes to the TIFF file
        images.SaveSync(fStream, encoder);
    }

    // clear the image collection and dispose the images
    images.ClearAndDisposeItems();
}

VB.NET

' open a TIFF file
Using fStream As New System.IO.FileStream("multipage.tif", System.IO.FileMode.Open, System.IO.FileAccess.ReadWrite)
    ' create an image collection
    Dim images As New Vintasoft.Imaging.ImageCollection()
    ' add images from the stream to the image collection
    images.Add(fStream)

    ' rotate the second page of TIFF file
    images(1).Rotate(90)

    ' create a TIFF encoder
    Using encoder As Vintasoft.Imaging.Codecs.Encoders.EncoderBase = Vintasoft.Imaging.Codecs.Encoders.AvailableEncoders.CreateEncoder("multipage.tif")
        ' specify that encoder must switch the image source to the saved file
        encoder.SaveAndSwitchSource = True
        ' set the encoder settings similar to the settings, which was used for encoding the first page of TIFF file
        encoder.SetSettingsFromImage(images(0))
        ' save changes to the TIFF file
        images.SaveSync(fStream, encoder)
    End Using

    ' clear the image collection and dispose the images
    images.ClearAndDisposeItems()
End Using

Send Feedback