随笔分类 - c# Image
摘要：public static Bitmap ChangeOpacity(Image img, float opacityvalue) { Bitmap bmp = new Bitmap(img.Width,img.Height); // Determining Width and Height of Source Image Graphics graphics = Graphics.FromImage(bmp); ColorMatrix colormatrix = new ColorMatrix(); ...
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摘要：public static byte[] Bitmap2Byte(Bitmap bitmap) { using (MemoryStream stream = new MemoryStream()) { bitmap.Save(stream , ImageFormat.Jpeg); byte[] data = new byte[stream.Length]; stream.Seek(0 , SeekOrigin.Begin); ...
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摘要：public static void ChangeColour(this Bitmap bmp, byte inColourR, byte inColourG, byte inColourB, byte outColourR, byte outColourG, byte outColourB) { // Specify a pixel format. PixelFormat pxf = PixelFormat.Format24bppRgb; // Lock the bitmap's bits. ...
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摘要：Invoke(new EventHandler(delegate { Bitmap bitmap2 = (Bitmap)eventArgs.Frame.Clone(); ThreadPool.QueueUserWorkItem(delegate { bitmap2.Save(@"G:\VCAP\" + last.T...
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摘要：方法一：Rectangle bounds = Screen.GetBounds(Point.Empty); using (Bitmap bitmap = new Bitmap(bounds.Width, bounds.Height)) { using (Graphics g = Graphics.FromImage(bitmap)) { g.CopyFromScreen(Point.Empty, Point.Empty, bounds.Size); ...
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摘要：http://www.cnblogs.com/softidea/p/3265576.html
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摘要：public static unsafe byte[] ConvertTo8Byte(Bitmap img) { byte[] result = new byte[img.Width * img.Height]; int n = 0; BitmapData data = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly, ...
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摘要：Bitmap bit = new Bitmap(renderImage.Width, renderImage.Height); using (Graphics g = Graphics.FromImage(bit)) { g.DrawImage(pictureBox1.Image, new Rectangle(0, 0, renderImage.Width, renderImage.Height), new Rectangle(0, 0, renderImage.Width, renderImage.Height), ...
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摘要：/// /// 通过FileStream 来打开文件，这样就可以实现不锁定Image文件，到时可以让多用户同时访问Image文件 /// /// /// public static Bitmap ReadImageFile(string path) { FileStream fs = File.OpenRead(path); //OpenRead int filelength = 0; filelength = (int)...
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摘要：/// <summary> /// 将源图像灰度化，但是没有转化为8位灰度图像。 /// http://www.bobpowell.net/grayscale.htm /// </summary> /// <param name="original"> 源图像。 </param> /// <returns> 灰度RGB图像。 </returns> public static Bitmap MakeGrayScale(Bitmap original) { //create a...
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摘要：#region 图片旋转函数 /// <summary> /// 以逆时针为方向对图像进行旋转 /// </summary> /// <param name="b">位图流</param> /// <param name="angle">旋转角度[0,360](前台给的)</param> /// <returns></returns> public static Bitmap Rotate(Bitmap b, int angle) { angle = angl
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摘要：第一种方法： public static byte[] GetImagePixel(Bitmap img) { byte[] result = new byte[img.Width*img.Height*3]; int n = 0; for (int i = 0; i < img.Height; i++) { for (int j = 0; j < img.Width; j++) { result[...
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摘要：Re: Source pixel format is not supported by the filter !by andrew.kirillov » Tue Mar 16, 2010 12:57 pmYou need to check 2 things:1) Check documentation to see which pixel formats are supported by particular image processing routine (8 bpp greyscale or 24 bpp RGB or 32 bpp, etc). It was told man
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摘要：http://blog.csdn.net/gisfarmer/article/details/3764734
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摘要：public static Bitmap GetThumbnail(Bitmap b, int destHeight, int destWidth) { System.Drawing.Image imgSource = b; System.Drawing.Imaging.ImageFormat thisFormat = imgSource.RawFormat; int sW = 0, sH = 0; // 按比例缩放 ...
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摘要：public static System.Drawing.Image ByteArrayToImage(byte[] b) { ImageConverter imgconv = new ImageConverter(); System.Drawing.Image img = (System.Drawing.Image)imgconv.ConvertFrom(b); return img; } public static byte[] ImageToByteArray(System.Dra...
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摘要：private void DSApictureBox_MouseDown(object sender, MouseEventArgs e) { if (drawLine) { start = new PointF(e.X,e.Y); start = LineAlgorithm.Control2Image(matrix,start); if (list1.Count == 0) { ...
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摘要：Image image = Image.FromFile(item.FullName); Image bt = new Bitmap(image); listImages.Add(bt); image.Dispose();
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摘要：public static Bitmap CropBitmap(Bitmap bitmap, int cropX, int cropY, int cropWidth, int cropHeight) { Rectangle rect = new Rectangle(cropX, cropY, cropWidth, cropHeight); Bitmap cropped = bitmap.Clone(rect, bitmap.PixelFormat); return cropped; } static void Main(string[] args) { string path = ...
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