using System;using System.Drawing;using System.Drawing.Imaging;using System.Drawing.Drawing2D;public class Consts
{
// grayscale values, these provide a better result then the weights // defined by the NTSC (North America Television Standards Committee) // which are 0.299, 0.587, 0.114 public const float GrayRed = 0.3086F; public const float GrayGreen = 0.6094F; public const float GrayBlue = 0.082F; // sepia values public const float SepiaRed = 0.2F; public const float SepiaGreen = 0.14F; public const float SepiaBlue = 0.08F; //resize quality public const System.Drawing.Drawing2D.InterpolationMode ResizeQuality = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
}public class GDI{ public enum Dimensions
{
Width, Height
} public enum AnchorPosition { Top, Center, Bottom, Left, Right } public static Bitmap ScaleByPercent(Image imgPhoto, int Percent) { float nPercent = ((float)Percent / 100); int sourceWidth = imgPhoto.Width; int sourceHeight = imgPhoto.Height; int sourceX = 0; int sourceY = 0; int destX = 0; int destY = 0; int destWidth = (int)Math.Ceiling((sourceWidth * nPercent)); int destHeight = (int)Math.Ceiling((sourceHeight * nPercent)); Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic; grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight), GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } public static Bitmap ReSize(Image imgPhoto, int Size, Dimensions Dimension, out float percent) { int sourceWidth = imgPhoto.Width; int sourceHeight = imgPhoto.Height; int sourceX = 0; int sourceY = 0; int destX = 0; int destY = 0; float nPercent = 0; switch (Dimension) { case Dimensions.Width: nPercent = ((float)Size / (float)sourceWidth); break; default: nPercent = ((float)Size / (float)sourceHeight); break; } percent = nPercent; int destWidth = (int)Math.Ceiling((sourceWidth * nPercent)); int destHeight = (int)Math.Ceiling((sourceHeight * nPercent)); Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.Bicubic; grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight), GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } public static Bitmap ReSize(Image imgPhoto, int Size, Dimensions Dimension) { int sourceWidth = imgPhoto.Width; int sourceHeight = imgPhoto.Height; int sourceX = 0; int sourceY = 0; int destX = 0; int destY = 0; float nPercent = 0; switch (Dimension) { case Dimensions.Width: nPercent = ((float)Size / (float)sourceWidth); break; default: nPercent = ((float)Size / (float)sourceHeight); break; } int destWidth = (int)Math.Ceiling((sourceWidth * nPercent)); int destHeight = (int)Math.Ceiling((sourceHeight * nPercent)); Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic; grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight), GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } public static Bitmap ReSize(Image imgPhoto, float percent) { int sourceWidth = imgPhoto.Width; int sourceHeight = imgPhoto.Height; int sourceX = 0; int sourceY = 0; int destX = 0; int destY = 0; float nPercent = percent; int destWidth = (int)Math.Ceiling((sourceWidth * nPercent)); int destHeight = (int)Math.Ceiling((sourceHeight * nPercent)); Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.Bicubic; grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight), GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } public static Bitmap FixedSize(Image imgPhoto, int Width, int Height) { int sourceWidth = imgPhoto.Width; int sourceHeight = imgPhoto.Height; int sourceX = 0; int sourceY = 0; int destX = 0; int destY = 0; float nPercent = 0; float nPercentW = 0; float nPercentH = 0; nPercentW = ((float)Width / (float)sourceWidth); nPercentH = ((float)Height / (float)sourceHeight); //if we have to pad the height pad both the top and the bottom //with the difference between the scaled height and the desired height if (nPercentH < nPercentW) { nPercent = nPercentH; destX = (int)((Width - (sourceWidth * nPercent)) / 2); } else { nPercent = nPercentW; destY = (int)((Height - (sourceHeight * nPercent)) / 2); } int destWidth = (int)Math.Ceiling((sourceWidth * nPercent)); int destHeight = (int)Math.Ceiling((sourceHeight * nPercent)); Bitmap bmPhoto = new Bitmap(Width, Height, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.Clear(Color.Black); grPhoto.InterpolationMode = InterpolationMode.Bicubic; grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight), GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } public static Bitmap Crop(Image imgPhoto, int Width, int Height, AnchorPosition Anchor) { int sourceWidth = imgPhoto.Width; int sourceHeight = imgPhoto.Height; int sourceX = 0; int sourceY = 0; int destX = 0; int destY = 0; float nPercent = 0; float nPercentW = 0; float nPercentH = 0; nPercentW = ((float)Width / (float)sourceWidth); nPercentH = ((float)Height / (float)sourceHeight); if (nPercentH < nPercentW) { nPercent = nPercentW; switch (Anchor) { case AnchorPosition.Top: destY = 0; break; case AnchorPosition.Bottom: destY = (int)(Height - (sourceHeight * nPercent)); break; default: destY = (int)((Height - (sourceHeight * nPercent)) / 2); break; } } else { nPercent = nPercentH; switch (Anchor) { case AnchorPosition.Left: destX = 0; break; case AnchorPosition.Right: destX = (int)(Width - (sourceWidth * nPercent)); break; default: destX = (int)((Width - (sourceWidth * nPercent)) / 2); break; } } int destWidth = (int)Math.Ceiling((sourceWidth * nPercent)); int destHeight = (int)Math.Ceiling((sourceHeight * nPercent)); Bitmap bmPhoto = new Bitmap(Width, Height, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.Bicubic; grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), new Rectangle(sourceX, sourceY, sourceWidth, sourceHeight), GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } public static Bitmap Croping(Image imgPhoto, Rectangle rect) { int destX = 0; int destY = 0; int destWidth = 0; int destHeight = 0; if (rect.X < 0) { destX = -rect.X; } if (rect.Y < 0) { destY = -rect.Y; } destWidth = rect.Width + destX; destHeight = rect.Height + destY; Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.Bicubic; grPhoto.DrawImage(imgPhoto, new Rectangle(0, 0, destWidth, destHeight), rect, GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } public static Bitmap makenew(Image imgPhoto, int x, int y, int w, int h) { int ww = imgPhoto.Width; int hh = imgPhoto.Height; Bitmap bmPhoto = new Bitmap(w, h, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.Bicubic; grPhoto.DrawImage(imgPhoto, new Rectangle(x, y, ww, hh), new Rectangle(0, 0, imgPhoto.Width, imgPhoto.Height), GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } /// <summary> /// mask done /// </summary> /// <param name="image">剪裁图像</param> /// <param name="imagebak">全图像</param> /// <param name="x">横向边距</param> /// <param name="y">竖向边距</param> /// <param name="w">色罩宽</param> /// <param name="h">色罩高</param> /// <param name="pos1">全图像在扫描图像中的起点</param> /// <returns></returns> /// <summary> /// 边缘拉伸处理 /// </summary> /// <param name="imgPhoto">图像</param> /// <param name="dir">1:up ,2:down ,3:left ,4:right</param> /// <param name="where">位置</param> /// <returns></returns> public static Bitmap streth(Image imgPhoto, int dir, int where) { int ww = imgPhoto.Width; int hh = imgPhoto.Height; Bitmap bmPhoto = (Bitmap)imgPhoto.Clone(); //bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.Bicubic; switch (dir) { case 1://up grPhoto.DrawImage(imgPhoto, new Rectangle(0, 0, ww, where), new Rectangle(0, where, ww, 10), GraphicsUnit.Pixel); break; case 2://down grPhoto.DrawImage(imgPhoto, new Rectangle(0, where, ww, hh - where), new Rectangle(0, where - 10, ww, 10), GraphicsUnit.Pixel); break; case 3://left grPhoto.DrawImage(imgPhoto, new Rectangle(0, 0, where, hh), new Rectangle(where, 0, 10, hh), GraphicsUnit.Pixel); break; case 4://right grPhoto.DrawImage(imgPhoto, new Rectangle(where, 0, ww - where, hh), new Rectangle(where - 10, 0, 10, hh), GraphicsUnit.Pixel); break; } grPhoto.Dispose(); return bmPhoto; } public static Bitmap hsi(Image imgPhoto)//,int h,int s,int i) { int sourceWidth = imgPhoto.Width; int sourceHeight = imgPhoto.Height; int destWidth = imgPhoto.Width; int destHeight = imgPhoto.Height; Bitmap bmPhoto = new Bitmap(imgPhoto.Width, imgPhoto.Height, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.Bicubic; ColorMatrix myColorMatrix = new ColorMatrix(); myColorMatrix.Matrix00 = 1.75f; // Red myColorMatrix.Matrix11 = 1.00f; // Green myColorMatrix.Matrix22 = 1.00f; // Blue myColorMatrix.Matrix33 = 1.00f; // alpha myColorMatrix.Matrix44 = 1.00f; // w // Create an ImageAttributes object and set the color matrix. ImageAttributes imageAttr = new ImageAttributes(); imageAttr.SetColorMatrix(myColorMatrix); grPhoto.DrawImage(imgPhoto, new Rectangle(0, 0, destWidth, destHeight), 0, 0, sourceWidth, sourceHeight, GraphicsUnit.Pixel, imageAttr); grPhoto.Dispose(); return bmPhoto; } public static Bitmap rota(Image imgPhoto, float angle)//,int h,int s,int i) { int sourceWidth = imgPhoto.Width; int sourceHeight = imgPhoto.Height; int destWidth; int destHeight; destWidth = sourceWidth; destHeight = sourceHeight; Bitmap bmPhoto = new Bitmap(imgPhoto.Width, imgPhoto.Height, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic; Matrix myMatrix = new Matrix(); myMatrix.RotateAt(angle, new Point((int)(sourceWidth / 2), (int)(sourceHeight / 2)), MatrixOrder.Append); grPhoto.Transform = myMatrix; //g.Clip=new Region(new Rectangle(this.croping.X,this.croping.Y,this.croping.Width+1,this.croping.Height+1)); //g.Transform = myMatrix2; //g.DrawImage(image,rectd,rects, GraphicsUnit.Pixel ); //g.Transform = myMatrix; grPhoto.DrawImage(imgPhoto, new Rectangle(0, 0, destWidth, destHeight), new Rectangle(0, 0, sourceWidth, sourceHeight), GraphicsUnit.Pixel); grPhoto.Dispose(); return bmPhoto; } // return matrix for the specified saturation public static Bitmap satuation(Image imgPhoto, float percent) { //set the saturation by scaling the red, green and blue values //a value of 0 is grayscale, 1.0 is the orginial (no change) and //above 2.0 starts to look unnatural //calculate the scaling offset to apply to the red, green and blue colors float v; if (percent > 0) { //range from 1 (no change) to 2.5 (a lot of saturation) v = 1.0F + (0.015F * percent); } else { // range from 0.25 (almost grayscale) to 1 (no change) v = 1.0F - (0.0075F * -percent); } float red = (1.0F - v) * Consts.GrayRed; float green = (1.0F - v) * Consts.GrayGreen; float blue = (1.0F - v) * Consts.GrayBlue; int destX = 0; int destY = 0; int destWidth = imgPhoto.Width; int destHeight = imgPhoto.Height; Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic; ColorMatrix cm = new ColorMatrix(); cm.Matrix00 = red + v; cm.Matrix01 = red; cm.Matrix02 = red; cm.Matrix03 = 0; cm.Matrix04 = 0; cm.Matrix10 = green; cm.Matrix11 = green + v; cm.Matrix12 = green; cm.Matrix13 = 0; cm.Matrix14 = 0; cm.Matrix20 = blue; cm.Matrix21 = blue; cm.Matrix22 = blue + v; cm.Matrix23 = 0; cm.Matrix24 = 0; cm.Matrix30 = 0; cm.Matrix31 = 0; cm.Matrix32 = 0; cm.Matrix33 = 1; cm.Matrix34 = 0; cm.Matrix40 = 0; cm.Matrix41 = 0; cm.Matrix42 = 0; cm.Matrix43 = 0; cm.Matrix44 = 1; ImageAttributes attr = new ImageAttributes(); attr.SetColorMatrix(cm); grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), destX, destY, destWidth, destHeight, GraphicsUnit.Pixel, attr); grPhoto.Dispose(); return bmPhoto; } public static Bitmap gamma(Image imgPhoto, float percent) { int destX = 0; int destY = 0; int destWidth = imgPhoto.Width; int destHeight = imgPhoto.Height; float pp = percent / 100.0f + 1; Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic; ImageAttributes attr = new ImageAttributes(); attr.SetGamma(pp, ColorAdjustType.Bitmap); grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), destX, destY, destWidth, destHeight, GraphicsUnit.Pixel, attr); grPhoto.Dispose(); return bmPhoto; } public static Bitmap grayscale(Image imgPhoto) { int destX = 0; int destY = 0; int destWidth = imgPhoto.Width; int destHeight = imgPhoto.Height; Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic; ColorMatrix cm = new ColorMatrix(new float[][]{ new float[]{0.5f,0.5f,0.5f,0,0}, new float[]{0.5f,0.5f,0.5f,0,0}, new float[]{0.5f,0.5f,0.5f,0,0}, new float[]{0,0,0,1,0,0}, new float[]{0,0,0,0,1,0}, new float[]{0,0,0,0,0,1}}); /* ColorMatrix cm = new ColorMatrix(new float[][]{ new float[]{ Consts.GrayRed , Consts.GrayRed ,Consts.GrayRed , 0 , 0 }, new float[]{ Consts.GrayGreen , Consts.GrayBlue , Consts.GrayBlue , 0 , 0 }, new float[]{ Consts.GrayBlue , Consts.GrayBlue , Consts.GrayBlue , 0 , 0 }, new float[]{ 0 ,0 , 0 , 1 , 0 , 0 }, new float[]{ 0 ,0 , 0 , 0 , 1 , 0 }, new float[]{ 0 ,0 , 0 , 0 , 0 , 1 }}); */ ImageAttributes attr = new ImageAttributes(); attr.SetColorMatrix(cm); grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), destX, destY, destWidth, destHeight, GraphicsUnit.Pixel, attr); grPhoto.Dispose(); return bmPhoto; } public static Bitmap contrast(Image imgPhoto, float contrast) { float t = 0.5f * (1f - contrast); int destX = 0; int destY = 0; int destWidth = imgPhoto.Width; int destHeight = imgPhoto.Height; Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic; ColorMatrix cm = new ColorMatrix(new float[][]{ new float[]{ contrast , 0 , 0 , 0 , 0 }, new float[]{ 0 , contrast , 0 , 0 , 0 }, new float[]{ 0 , 0 , contrast , 0 , 0 }, new float[]{ 0 , 0 , 0 , 1 , 0 }, new float[]{ t , t , t , 0 , 1 }}); ImageAttributes attr = new ImageAttributes(); attr.SetColorMatrix(cm); grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), destX, destY, destWidth, destHeight, GraphicsUnit.Pixel, attr); grPhoto.Dispose(); return bmPhoto; } public static Bitmap brightness(Image imgPhoto, float d) { int destX = 0; int destY = 0; int destWidth = imgPhoto.Width; int destHeight = imgPhoto.Height; Bitmap bmPhoto = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb); bmPhoto.SetResolution(imgPhoto.HorizontalResolution, imgPhoto.VerticalResolution); Graphics grPhoto = Graphics.FromImage(bmPhoto); grPhoto.InterpolationMode = InterpolationMode.HighQualityBicubic; ColorMatrix cm = new ColorMatrix(new float[][]{ new float[]{ 1 , 0 , 0 , 0 , 0 }, new float[]{ 0 , 1 , 0 , 0 , 0 }, new float[]{ 0 , 0 , 1 , 0 , 0 }, new float[]{ 0 , 0 , 0 , 1 , 0 }, new float[]{ d , d , d , 0 , 1 }}); ImageAttributes attr = new ImageAttributes(); attr.SetColorMatrix(cm); grPhoto.DrawImage(imgPhoto, new Rectangle(destX, destY, destWidth, destHeight), destX, destY, destWidth, destHeight, GraphicsUnit.Pixel, attr); grPhoto.Dispose(); return bmPhoto; }}