Image processing in ASP.NET

Image Processing in ASP.NET

PhotoController SDK is able to work with ASP.NET. What you need is to add the assembly to the website reference, and call the method within the object to perform any image processing operation you want. The following is an example that loads an image, apply an Emboss effect, then render to the page.

   1:  // decalres the page output content type

   2:  Response.ContentType = "image/jpeg";

3:

   4:  // initialize a new instance of PhotoController

   5:  IC.PhotoController.Controller objpc = new Controller();

6:

   7:  // load the image to the controller

   8:  System.Drawing.Image img = System.Drawing.Image.FromFile(Server.MapPath("..") + "\\PhotoControllerWebDemo\\test.jpg”);

   9:  objpc.LoadImage(img);

10:

  11:  // create an EmbossFilter

  12:  EmbossFilter filter = new EmbossFilter();

  13:  filter.Level = 3;

  14:  filter.Direction = 120;

15:

  16:  // apply the filter algorithm

  17:  img = objpc.Filter(filter);

18:

  19:  // create a bitmap object with the resulted image

  20:  Bitmap b = new Bitmap(img);

  21:  System.IO.MemoryStream oStream=new System.IO.MemoryStream();

  22:  Response.ClearContent();

  23:  b.Save(oStream,System.Drawing.Imaging.ImageFormat.Jpeg);

24:

  25:  // output the bitmap to the page

  26:  Response.BinaryWrite(oStream.ToArray());

27:

  28:  // release all resources

  29:  objpc.Dispose();

  30:  img.Dispose();

  31:  b.Dispose();

  32:  Response.End();

The following VB.NET code does the same thing above:

   1:  // decalres the page output content type

   2:  Response.ContentType = "image/jpeg"

3:

   4:  // initialize a new instance of PhotoController

   5:  Dim objpc As IC.PhotoController.Controller

   6:  objpc = New IC.PhotoController.Controller

7:

   8:  // load the image to the controller

   9:  Dim img As System.Drawing.Image

10:

  11:  img = System.Drawing.Image.FromFile(Server.MapPath("..") + "\PhotoControllerWebDemoVB\test.jpg”)

  12:  objpc.LoadImage(img)

13:

  14:  // create an EmbossFilter

  15:  Dim filter As EmbossFilter = New EmbossFilter()

  16:  filter.Level = 3

  17:  filter.Direction = 120

18:

  19:  // apply the filter algorithm

  20:  img = objpc.Filter(filter)

21:

  22:  // create a bitmap object with the resulted image

  23:  Dim b As Bitmap

  24:  b = New Bitmap(img)

25:

  26:  Dim oStream As New System.IO.MemoryStream

  27:  Response.ClearContent()

  28:  b.Save(oStream, System.Drawing.Imaging.ImageFormat.Jpeg)

29:

  30:  // output the bitmap to the page

  31:  Response.BinaryWrite(oStream.ToArray())

32:

  33:  // release all resources

  34:  objpc.Dispose()

  35:  b.Dispose()

  36:  img.Dispose()

  37:  Response.End()

Suppose the above code-behind belongs to a file called DisplayImage.aspx, you need another page to display the image. For example, you can use the following line:

   1:  <img src="DisplayImage.aspx">

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