日期:2014-05-20 浏览次数:20984 次
using System.Drawing; using System.Windows.Forms; using System.Drawing.Imaging; public class Form1 : Form { Bitmap bitmap = new Bitmap(500, 400); ImageAttributes imageAttributes = new System.Drawing.Imaging.ImageAttributes(); ColorMatrix matrix = new System.Drawing.Imaging.ColorMatrix(); public Form1() { this.DoubleBuffered = true; this.ClientSize = bitmap.Size; using (Graphics g = Graphics.FromImage(this.bitmap)) { g.CopyFromScreen(Point.Empty, Point.Empty, bitmap.Size); } } protected override void OnPaint(PaintEventArgs e) { e.Graphics.DrawImage( this.bitmap, this.ClientRectangle, 0, 0, this.bitmap.Width, this.bitmap.Height, GraphicsUnit.Pixel, this.imageAttributes); } protected override void OnMouseMove(MouseEventArgs e) { this.matrix[4, 0] = (e.X - this.ClientRectangle.Width / 2.0f) / this.ClientRectangle.Width; this.matrix[4, 1] = (e.Y - this.ClientRectangle.Height / 2.0f) / this.ClientRectangle.Height; this.imageAttributes.SetColorMatrix(this.matrix); Invalidate(); } static void Main() { Application.Run(new Form1()); } }
------解决方案--------------------
学习了
------解决方案--------------------
帮顶下
------解决方案--------------------
百叶窗效果显示图像
推拉效果显示图像
水平交错效果显示图像
垂直交错效果显示图像
图像纹理效果
图像浮雕效果
图像积木效果
马赛克效果显示图像
将彩色图片转换为灰度图片
反转图片的颜色
旋转、反射和扭曲图像
------解决方案--------------------
此贴必火啊。
先收藏,再想想代码
------解决方案--------------------
帮顶
------解决方案--------------------
好主意
先帮顶了
------解决方案--------------------
最近怎么这么多人对图形感冒了.
------解决方案--------------------
看看这个http://www.cnpopsoft.com/article.asp?id=76,功能很强大的图片处理软件,全源码共享
------解决方案--------------------
http://topic.csdn.net/u/20090420/00/4042e404-e802-45f7-8b25-c7fbc5a81c76.html
------解决方案--------------------
图像算法?啥意思?
------解决方案--------------------
学习
------解决方案--------------------
public static bool GetThumbnailJPEG(string sourceFile,ref string destFile, int destHeight, int destWidth) { System.Drawing.Image imgSource = System.Drawing.Image.FromFile(sourceFile); int sW = 0, sH = 0; // 按比例缩放 int sWidth = imgSource.Width; int sHeight = imgSource.Height; if (sHeight > destHeight || sWidth > destWidth) { if ((sWidth * destHeight) > (sHeight * destWidth)) { sW = destWidth; sH = (destWidth * sHeight) / sWidth; } else { sH = destHeight; sW = (sWidth * destHeight) / sHeight; } } else { sW = sWidth; sH = sHeight; } Bitmap outBmp = new Bitmap(destWidth, destHeight); Graphics g = Graphics.FromImage(outBmp); g.Clear(Color.Black); // 设置画布的描绘质量 g.CompositingQuality = CompositingQuality.HighQuality; g.SmoothingMode = SmoothingMode.HighQuality; g.InterpolationMode = InterpolationMode.HighQualityBicubic; g.DrawImage(imgSource, new Rectangle((destWidth - sW) / 2, (destHeight - sH) / 2, sW, sH), 0, 0, imgSource.Width, imgSource.Height, GraphicsUnit.Pixel); g.Dispose(); // 以下代码为保存图片时,设置压缩质量 EncoderParameters encoderParams = new EncoderParameters(); long[] quality = new long[1]; quality[0] = 100; EncoderParameter encoderParam = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality); encoderParams.Param[0] = encoderParam; try { //获得包含有关内置图像编码解码器的信息的ImageCodecInfo 对象。 ImageCodecInfo[] arrayICI = ImageCodecInfo.GetImageEncoders(); ImageCodecInfo jpegICI = null; for (int x = 0; x < arrayICI.Length; x++) { if (arrayICI[x].FormatDescription.Equals("JPEG")) { jpegICI = arrayICI[x];//设置JPEG编码 break; } } string savefile =Path.GetDirectoryName( destFile) + "\\" + Path.GetFileName(destFile).Replace(Path.GetExtension(destFile), ".jpg"); destFile = savefile; if (jpegICI != null) { outBmp.Save(savefile, jpegICI, encoderParams); } else { outBmp.Save(savefile, ImageFormat.Jpeg); } return true; } catch { return false; } finally { imgSource.Dispose(); outBmp.Dispose(); } }