Rank: Advanced Member
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Joined: 5/10/2006(UTC)
Posts: 32
Thanks: 6 times
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I am using the Jpeg2 encoder and it is running very slow. It is literally taking minutes to convert an image to jp2, whereas in Photoshop, it saves in seconds. I tried this: Code:bitmap.Save(saveFileDialog1.FileName, new Aurigma.GraphicsMill.Codecs.Jpeg2kEncoderOptions(0.1f));
Ive also tried the following with all the different progressionorders. Code:using (Aurigma.GraphicsMill.Bitmap bitmap =
new Aurigma.GraphicsMill.Bitmap(img))
{
using (Aurigma.GraphicsMill.Codecs.Jpeg2kWriter writer =
new Aurigma.GraphicsMill.Codecs.Jpeg2kWriter())
{
writer.Open(DestinationFileName);
writer.Progress += new Aurigma.GraphicsMill.ProgressEventHandler(aurBitmap_Progress);
using (Aurigma.GraphicsMill.Codecs.Jpeg2kFrame frame =
new Aurigma.GraphicsMill.Codecs.Jpeg2kFrame())
{
frame.Rate = rateOfCompZeroToOneScale;
frame.Compression = Aurigma.GraphicsMill.Codecs.CompressionType.WaveletLossy;
frame.ProgressionOrder = Aurigma.GraphicsMill.Codecs.Jpeg2kProgressionOrder.Pcrl;
frame.SetBitmap(bitmap);
writer.AddFrame(frame);
}
}
}
I am running version 3.5.405.0 of the Aurigma.GraphicsMill assembly (.net 1.1) Any ideas on how to speed this up. These conversion times are unexceptable to my client, so I'm feeling some heat :( Edited by user Tuesday, December 18, 2007 3:28:26 AM(UTC)
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Rank: Advanced Member
Groups: Guest
Joined: 1/31/2005(UTC)
Posts: 458
Was thanked: 5 time(s) in 5 post(s)
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Hello Todd, Unfortunatelly we have to confirm this problem with our Jpeg2000 encoder. We are going to fix this issue in future releases. |
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Rank: Member
Groups: Guest
Joined: 5/29/2007(UTC)
Posts: 1
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I found the same thing, but I noticed that it only seems to happen for higher-resolution images. I have found that a safe level seems to be any image where Width * Height < 2600000 In one of my apps I have been checking the resolution and saving to JPEG2000 only if the resolution is low enough for the saving speed to be fast, like this: Code: if (MyBitmap.Width * MyBitmap.Height <= 2600000)
{
// Compress with JPEG 2000
MyBitmap.Save(stream, new Aurigma.GraphicsMill.Codecs.Jpeg2kEncoderOptions(0.07f));
}
else
{
// Compress with standard JPEG
MyBitmap.Save(stream, new Aurigma.GraphicsMill.Codecs.JpegEncoderOptions());
}
Edited by user Tuesday, December 18, 2007 3:31:16 AM(UTC)
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