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PSD with transparent background goes black when converting to JPG
Rank: Newbie
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Joined: 6/24/2009(UTC)
Posts: 3
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When using the following code to read / resize and output a PSD as a JPG, the transparent background is output as black. Is there a way to have this output as white? Code:
Bitmap ModifiedBitmap = new Bitmap();
PsdReader PSD = new PsdReader(@"c:\PSDs\My.psd");
IFrame PSDFrame = PSD.LoadFrame(0);
PSDFrame.GetBitmap(ModifiedBitmap);
ModifiedBitmap.Transforms.Resize(Width, Height, InterpolationMode.Lanczos3Filter);
//Specify that we are going to save to JPEG
JpegEncoderOptions EncoderOptions = new JpegEncoderOptions(95, true);
//Save image to response stream
context.Response.Clear();
context.Response.ContentType = "image/jpeg";
ModifiedBitmap.Save(context.Response.OutputStream, EncoderOptions);
ModifiedBitmap.Dispose();
context.Response.End();
Thanks, Matt
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Rank: Advanced Member
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Joined: 3/9/2008(UTC)
Posts: 554
Was thanked: 1 time(s) in 1 post(s)
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Hello Matt, You just need to discard alpha channel and set necessary background color. You can do it as follows: Code:Bitmap ModifiedBitmap = new Bitmap();
PsdReader PSD = new PsdReader(@"c:\PSDs\My.psd");
IFrame PSDFrame = PSD.LoadFrame(0);
PSDFrame.GetBitmap(ModifiedBitmap);
ModifiedBitmap.Transforms.Resize(Width, Height, InterpolationMode.Lanczos3Filter);
Aurigma.GraphicsMill.Color background = System.Drawing.Color.White;
ModifiedBitmap.Channels.DiscardAlpha(background);
//Specify that we are going to save to JPEG
JpegEncoderOptions EncoderOptions = new JpegEncoderOptions(95, true);
//Save image to response stream
context.Response.Clear();
context.Response.ContentType = "image/jpeg";
ModifiedBitmap.Save(context.Response.OutputStream, EncoderOptions);
ModifiedBitmap.Dispose();
context.Response.End();
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Aurigma Forums
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Discussions – Graphics Mill
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PSD with transparent background goes black when converting to JPG
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