图像处理

lvg 2008-12-19 11:05:03

两张bmp图像做比较相似度：

请教有方法改变bmp图像的角度吗？

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leileigaui 2011-09-26

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ls很牛啊～～帮顶

xm1050230545 2011-06-01

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我晕要贴到什么时候，算了完毕

xm1050230545 2011-06-01

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public class PointD
{
public PointD()
{
x = 0;
y = 0;
}

public PointD(double x, double y)
{
this.x = x;
this.y = y;
}

double x;

double y;

public double Y
{
get { return y; }
set { y = value; }
}

public double X
{
get { return x; }
set { x = value; }
}

public PointD Whirl(PointD origin, double angle)
{
double len, agl;
PointD v = (this - origin);
len = v.VectorLength;
if (len == 0)
return new PointD(origin.x, origin.y);

agl = v.Angle;
agl += angle;
agl %= 360;
if (agl < 0)
agl += 360;
agl = GraphHelper.ToPI(agl);

return origin + new PointD(len * Math.Cos(agl), len * Math.Sin(agl));
}
}

xm1050230545 2011-06-01

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这个可以有：
public static Bitmap Whirl(Bitmap bmp, PointD org, double angle)
{
Bitmap src = new Bitmap(bmp.Width, bmp.Height);
Graphics g = Graphics.FromImage(src);
PointD o1 = new PointD();
o1 = o1.Whirl(org, angle);

GraphicsState gs = g.Save();
g.TranslateTransform((float)o1.X, (float)o1.Y);
g.RotateTransform((float)angle);
g.DrawImage(bmp, 0, 0,bmp.Width,bmp.Height);
g.Restore(gs);
GraphHelper.DrawSelPoint(org.Point, g, 7);
g.Dispose();
return src;
}

zhxcumt 2011-05-11