如何减少从网络摄像头捕获的图像的大小
我正在使用网络摄像头在Silverlight中捕捉图像。 有没有办法配置网络摄像头捕捉低分辨率的图像？
http://programmerpayback.com/2010/01/21/use-silverlight-to-resize-images-and-increase-compression-before-uploading/
public static WriteableBitmap GetImageSource(Stream stream, double maxWidth, double maxHeight)
{
BitmapImage bmp = new BitmapImage();
bmp.SetSource(stream);
Image img = new Image();
img.Effect = new DropShadowEffect() { ShadowDepth = 0, BlurRadius = 0 };
img.Source = bmp;
double scaleX = 1;
double scaleY = 1;
if (bmp.PixelHeight > maxHeight)
scaleY = maxHeight / bmp.PixelHeight;
if (bmp.PixelWidth > maxWidth)
scaleX = maxWidth / bmp.PixelWidth;
// maintain aspect ratio by picking the most severe scale
double scale = Math.Min(scaleY, scaleX);
return new WriteableBitmap(img, new ScaleTransform() { ScaleX = scale, ScaleY = scale });
}