WPF

Insincere Dave wrote:

I tried scaling an Image control and using RenderTargetBitmap and didn't notice any quality degradation

void ScaleUsingRTB(string inFile, string outFile, double scale)
{
	Uri uri = new Uri(inFile);
	BitmapImage bitmapImage = new BitmapImage(uri);
	var image = new Image
	            	{
	            		Source = bitmapImage, Width = bitmapImage.PixelWidth*scale, Height = bitmapImage.PixelHeight*scale
	            	};
	image.Measure(new Size(image.Width,image.Height));
	image.Arrange(new Rect(0,0,image.Width,image.Height));
	RenderTargetBitmap rtb = new RenderTargetBitmap((int) image.Width, (int) image.Height, 96, 96, PixelFormats.Pbgra32);
	rtb.Render(image);

	Save(outFile,rtb);
}

Insincere Dave wrote:

Save(outFile,rtb);