watermark an image

senthil

How to watermark an image by adding label on drag and drop at design and save the image atlast..... Any idea guys. Pl Help me soon

2 Replies

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Kip Hackman5y ago
You can use LEADTOOLS Document SDK technology in your application.
https://www.leadtools.com/sdk/products/document
You can leverage the AnnBatesStampComposer class, to add a watermark, then use the AnnRenderingEngine to burn the watermark to the image.
Here is some sample code:
using (RasterCodecs _codecs = new RasterCodecs())
using (RasterImage _image = _codecs.Load(@"C:\LEADTOOLS21\Resources\Images\cannon.jpg"))
{
    //Set the rendering engine
    AnnBatesStampComposer.RenderingEngine = new AnnWinFormsRenderingEngine();

    //Create AnnBatesStampComposer instance and add the created Bates stamp to it
    AnnBatesStampComposer batesStampComposer = new AnnBatesStampComposer();

    //Create Bates stamp container, set its size and mapper and attach it to the composer
    AnnContainer batesStampContainer = new AnnContainer();
    batesStampContainer.Mapper.MapResolutions(_image.XResolution, _image.YResolution, _image.XResolution, _image.YResolution);
    batesStampContainer.Size = batesStampContainer.Mapper.SizeToContainerCoordinates(LeadSizeD.Create(_image.Width, _image.Height));

    //Create AnnBatesStamp and set its properties
    AnnBatesStamp batesStamp = new AnnBatesStamp();
    batesStamp.Font = new AnnFont("Arial", 12);
    batesStamp.Foreground = AnnSolidColorBrush.Create("Red");
    batesStamp.HorizontalAlignment = AnnHorizontalAlignment.Center;
    batesStamp.VerticalAlignment = AnnVerticalAlignment.Center;
    batesStamp.Logo.Angle = 45;
    batesStamp.Logo.Font = new AnnFont("Arial", 32);
    batesStamp.Logo.Opacity = 0.5;
    batesStamp.Logo.StretchLogo = true;
    batesStamp.Logo.Text = "Watermark";

    batesStampComposer.Stamps.Add(batesStamp);

    //Apply Bates Stamp to our container
    batesStampComposer.TargetContainers.Add(batesStampContainer);

    AnnBatesStampComposer.RenderingEngine.RenderOnImage(batesStampContainer, _image);

    _codecs.Save(_image, @"C:\LEADTOOLS21\Resources\Images\watermarkedImage.tif", RasterImageFormat.Tif, 8);
}
paul daniel16y ago
Hi

1) Run Visual Studio 2005
2) Create new "Web-Site" project using Project Wizard
3) Click "Website" menu and then "Add Reference" command in this menu
4) "Add Reference" dialog will appear. Select "Bytescout.Watermarking.dll" and click OK to add a reference to Bytescout.Watermarking SDK component
5) Then copy and paste the following code into the "Default.aspx.cs" file (see below)

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Bytescout.Watermarking;
using Bytescout.Watermarking.Presets;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

// Create Watermarker instance
Watermarker waterMarker = new Watermarker();

// Initialize library
waterMarker.InitLibrary("demo", "demo");

// Set input file name
string inputFilePath = "my_sample_image.jpg";

// Add image to apply watermarks to
waterMarker.AddInputFile(inputFilePath);

// Create new watermark
TextFitsPage preset = new TextFitsPage();

// Set watermark text
preset.Text = "Bytescout Watermarking";
// Add watermark to watermarker
waterMarker.AddWatermark(preset);

// clear http output
Response.Clear();
// set the content type to JPEG
Response.ContentType = "image/jpeg";
// add content type header
Response.AddHeader("Content-Type", "image/jpeg");
// set the content disposition
Response.AddHeader("Content-Disposition", "inline;filename=my_sample_image.jpg");
// Set output directory
waterMarker.OutputOptions.OutputStream = Response.OutputStream;
// Apply watermarks
waterMarker.Execute(0);

Response.End();
}
}