直方图计算程序

///

///计算直方图（红色）

///

private void CalcHistRed()

{

//计算

int rBins = 256;

RangeF rRange = new RangeF(0f, 255f);

Image imageSource = new Image((Bitmap)pbSourc e.Image);

Image imageRed = imageSource.Split()[2];

DenseHistogram hist = new DenseHistogram(rBins, rRange);

hist.Calculate(new IImage[] { imageRed }, false, null);

//显示

pbHistogram.Image = GenerateHistImage(hist).Bitmap;

//释放资源

imageSource.Dispose();

imageRed.Dispose();

hist.Dispose();

}

///

///计算直方图（色调和饱和度）

///

private void CalcHistHs()

{

//计算

int hBins = 180;

RangeF hRange = new RangeF(0f, 179f); //色调的范围在0～180之间int sBins = 256;

RangeF sRange = new RangeF(0f, 255f);

Image imageSource = new Image((Bitmap)pbSourc e.Image);

Image imageHsv = imageSource.Convert(); //将色彩空间从BGR转换到HSV

Image[] imagesHsv = imageSource.Split(); //分解成H、S、V三部分

DenseHistogram hist = new DenseHistogram(new int[] { hBins, sBins }, new RangeF[] { hRange, sRange });

hist.Calculate(new IImage[] { imagesHsv[0], imagesHsv[1] }, false, n ull);

//显示

pbHistogram.Image = GenerateHistImage(hist).Bitmap;

//释放资源

imageSource.Dispose();

imageHsv.Dispose();

foreach (Image image in imagesHsv) image.Dispose();

hist.Dispose();

}