[WINFORM] Image snapshot.Improve the image quality? (System.Drawing.Imaging.PixelFormat)

Hi All,
Am capturing application window and saving it as image file using c#
my window contains RED COLOR..red color is blurred in saved image
below is my coding snippet
bmpScreenshot = new Bitmap(MdiParent.Width, MdiParent.Height, PixelFormat.Format24bppRgb);
// Create a graphics object from the bitmap
gfxScreenshot = Graphics.FromImage(bmpScreenshot);
// Take the screenshot from the upper left corner to the right bottom corner
gfxScreenshot.CopyFromScreen(MdiParent.Location.X, MdiParent.Location.Y, 0, 0, MdiParent.Size, CopyPixelOperation.SourceCopy);
// Save the screenshot to the specified path that the user has chosen
bmpScreenshot.Save(saveScreenshot.FileName, img);

How to improve the image quality?

Hi friend,

Use below code to preserve your image quality

System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(thumbWidth, (int)thumbHeight);

//- Create a System.Drawing.Graphics object from the Bitmap which we will use to draw the high quality scaled image

System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(bitmap);

//- Set the System.Drawing.Graphics object property SmoothingMode to HighQuality

gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

//- Set the System.Drawing.Graphics object property CompositingQuality to HighQuality

gr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;

//- Set the System.Drawing.Graphics object property InterpolationMode to High

gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

//- Draw the original image into the target Graphics object scaling to the desired width and height

System.Drawing.Rectangle rectDestination = new System.Drawing.Rectangle(0, 0, thumbWidth, (int)thumbHeight);

//Set Image codec of JPEG type, the index of JPEG codec is "1"

System.Drawing.Imaging.ImageCodecInfo codec = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders()[1];

//Set the parameters for defining the quality of the thumbnail... here it is set to 100%

System.Drawing.Imaging.EncoderParameters eParams = new System.Drawing.Imaging.EncoderParameters(1);

eParams.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L);

gr.DrawImage(image, rectDestination, 0, 0, srcWidth, srcHeight, System.Drawing.GraphicsUnit.Pixel);

Hope this helps you.

Thanks

3 Replies

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Dorababu Meka15y ago
narasimman Mark it as answer if helpful to you
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narasimman g15y ago
hey thanks bro,
it works
cheers
0
Amit Choudhary15y ago
Hi friend,

Use below code to preserve your image quality

     System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(thumbWidth, (int)thumbHeight);

        //- Create a System.Drawing.Graphics object from the Bitmap which we will use to draw the high quality scaled image
        System.Drawing.Graphics gr = System.Drawing.Graphics.FromImage(bitmap);

        //- Set the System.Drawing.Graphics object property SmoothingMode to HighQuality
        gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

        //- Set the System.Drawing.Graphics object property CompositingQuality to HighQuality
        gr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;

        //- Set the System.Drawing.Graphics object property InterpolationMode to High
        gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;

        //- Draw the original image into the target Graphics object scaling to the desired width and height
        System.Drawing.Rectangle rectDestination = new System.Drawing.Rectangle(0, 0, thumbWidth, (int)thumbHeight);
        //Set Image codec of JPEG type, the index of JPEG codec is "1"

        System.Drawing.Imaging.ImageCodecInfo codec = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders()[1];

        //Set the parameters for defining the quality of the thumbnail... here it is set to 100%

        System.Drawing.Imaging.EncoderParameters eParams = new System.Drawing.Imaging.EncoderParameters(1);

        eParams.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L);

        gr.DrawImage(image, rectDestination, 0, 0, srcWidth, srcHeight, System.Drawing.GraphicsUnit.Pixel);

Hope this helps you.

Thanks
0