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ChingYen  
#1 Posted : Wednesday, March 12, 2008 4:13:36 AM(UTC)
ChingYen

Rank: Advanced Member

Groups: Member
Joined: 3/3/2008(UTC)
Posts: 185

Thanks: 8 times
Hi,

I need a very fast way to know if an image is portrait or landscape or square.

My current version is loading the picture into size 80 thumbnail, and check on the orientation.

Code:

Dim thumbnail As New Aurigma.GraphicsMill.Bitmap
' Create appropriate format reader. 
Dim reader As Aurigma.GraphicsMill.Codecs.FormatReader = _
    Aurigma.GraphicsMill.Codecs.FormatManager.CreateFormatReader(FileName)
' LoadFrame returns a frame object. 
' From this frame we can get a thumbnail.
Dim frame As Aurigma.GraphicsMill.Codecs.Frame = reader.LoadFrame(0)
frame.GetThumbnail(thumbnail, 80, 0)
frame.Dispose()
reader.Dispose()
If thumbnail.Width > thumbnail.Height Then
    lLandscape = lLandscape + 1
ElseIf thumbnail.Height > thumbnail.Width Then
    lPortrait = lPortrait + 1
Else
   lSquare = lSquare + 1
End If
thumbnail.Dispose()


May I know is there any other better / faster way? It will be great if it don't even need to load the image.

Edited by user Wednesday, March 26, 2008 8:25:26 PM(UTC)  | Reason: Not specified

Alex Kon  
#2 Posted : Wednesday, March 12, 2008 5:35:06 PM(UTC)
Alex Kon

Rank: Advanced Member

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Joined: 1/31/2005(UTC)
Posts: 458

Was thanked: 5 time(s) in 5 post(s)
Hello,

Yeap, of course - you can use IFrame.Width and IFrame.Height properties. They contain correct values independently of the IFrame.GetBitmap(...) method call.

I modified your sample a little to illustrate the way:

Code:
Aurigma.GraphicsMill.Codecs.IFormatReader reader = 
	Aurigma.GraphicsMill.Codecs.FormatManager.CreateFormatReader("x:/allformats/24bppRgb_Kite.jpg");

using (Aurigma.GraphicsMill.Codecs.IFrame frame = reader.LoadFrame(0))
{
	if (frame.Width > frame.Height)
	{
		//Landscape
	}
	else if (frame.Width < frame.Height)
	{
		//Portrait
	}
	else
	{
		//Square
	}
}

reader.Close();
reader.Dispose();

Edited by user Wednesday, March 26, 2008 8:25:54 PM(UTC)  | Reason: Not specified

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