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HomeHomeArchived Discus...Archived Discus...Developing Under Previous Versions of .NETDeveloping Under Previous Versions of .NETASP.Net 2.0ASP.Net 2.0 Problem with InterpolationMode in the high or higher quality mode Problem with InterpolationMode in the high or higher quality mode
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4/21/2008 6:56 PM
 

Hopefully you guy can help me with this

 I created the script which can resize the image to the highest quality
What happen was, if i use the " InterpolationMode" option (High, HighQualityBicubic  or HighQualityBilinear) the picture TURN OUT in a very high quality BUT there was an extra LINE of the TOP and LEFT side of the image.
Script >>>>   SmallImg.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;


If I use the " InterpolationMode" option (Low,Default,NearestNeighbor,Bicubic or Bilinear) then the picture look a so blur.
Script >>>>              SmallImg.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
Script >>>>              SmallImg.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceOver;      

Thank you very much for reading my post.

 
The script is below is the full script that i wrote, please help me here. , All comment is included in the script too.

Please remember to test this script, please use the brighter image else you may not see the problem.

Thank you

<%@ Page Language="C#" %>
<%@Import Namespace="System.Drawing.Imaging" %>
<%@Import Namespace="System.Drawing" %>
<%@Import Namespace="System.IO" %>
"c#" runat="server">
public void Page_Load(Object sender, EventArgs e)
{
//Image source http://imagecache2.allposters.com/images/pic/IMC/P7393~White-Buddha-Posters.jpg string ImageName = "P7393~White-Buddha-Posters.jpg"; // Just use the white, just for easy to see the problem. System.Drawing.Image OriginalImage = System.Drawing.Image.FromFile(Server.MapPath(ImageName)); //Select resize image size int imageHeight = Convert.ToInt32("75"); // The height int imageWidth = Convert.ToInt32("75"); //The width Bitmap SmallBitmap = new Bitmap(imageWidth, imageHeight, OriginalImage.PixelFormat);
Graphics SmallImg = Graphics.FromImage(SmallBitmap);

//SmallImg.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode; //This option is so poor quality
//SmallImg.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceCopy;//This option is so poor quality
SmallImg.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;// Qualit is great BUT had virtical line on the left and top
// Problem with high, HighQualityBicubic, HighQualityBilinear
//Okay on low,Default,NearestNeighbor,Bicubic,Bilinear,
//SmallImg.Clear(Color.FromArgb(200, 255, 255, 255));
SmallImg.DrawImage(OriginalImage, 0, 0, SmallBitmap.Width, SmallBitmap.Height); //Print to the browser Response.ContentType = "image/jpeg";
SmallBitmap.Save(Response.OutputStream, ImageFormat.Jpeg);

SmallImg.Dispose();
SmallImg.Dispose();


}

 

 
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4/22/2008 4:57 PM
 

You could try to remove this line by changing the offset so the image get's placed a pixel to the left or up, depending on where the line is showing. If i am correct you can do this by replacing the 0 value's in the following part of your code:

SmallImg.DrawImage(OriginalImage, 0, 0, SmallBitmap.Width, SmallBitmap.Height);

The 0 values stand for the x and y values for the top left position of the image in the imagecontainer if I understand it correctly.

 
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HomeHomeArchived Discus...Archived Discus...Developing Under Previous Versions of .NETDeveloping Under Previous Versions of .NETASP.Net 2.0ASP.Net 2.0 Problem with InterpolationMode in the high or higher quality mode Problem with InterpolationMode in the high or higher quality mode


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