public override IOptimizerResult Optimize(MediaStream stream)
{
var quantizer = new WuQuantizer();
var memoryStream = new MemoryStream();
using (var bitmap = new Bitmap(stream.Stream))
{
var bitDepth = Image.GetPixelFormatSize(bitmap.PixelFormat);
if (bitDepth != 32)
{
return OptimizerFailureResult("the image you are attempting to quantize does not contain a 32 bit ARGB palette. This image has a bit depth of {0} with {1} colors".FormatWith(bitDepth, bitmap.Palette.Entries.Length));
}
using (var quantized = quantizer.QuantizeImage(bitmap))
{
quantized.Save(memoryStream, ImageFormat.Png);
}
// rewind the stream
memoryStream.Seek(0, SeekOrigin.Begin);
var result = new PngQuantOptimizerResult();
result.Success = true;
result.SizeBefore = (int)stream.Length;
result.SizeAfter = (int)memoryStream.Length;
result.ResultStream = memoryStream;
return OptimizationSuccessful(result);
}
}
public static void SquishNewlyUploadedPNGs(
[BlobTrigger("processimageincloud/{name}")] Stream input,
[Blob("processimageincloudoutput/{name}", FileAccess.Write)] Stream output)
{
var quantizer = new WuQuantizer();
using (var bitmap = new Bitmap(input))
{
using (var quantized = quantizer.QuantizeImage(bitmap))
{
quantized.Save(output, ImageFormat.Png);
}
}
}
public static void SquishNewlyUploadedPNGs(
Stream input,
Stream output)
{
var quantizer = new WuQuantizer();
using (var bitmap = new Bitmap(input))
{
using (var quantized = quantizer.QuantizeImage(bitmap))
{
quantized.Save(output, ImageFormat.Png);
}
}
}
public static void Main(string[] args)
{
Console.WriteLine("nQuant Version {0} .net color Quantizer. An adaptation of Xiaolin Wu's fast optimal color quantizer.", Assembly.GetExecutingAssembly().GetName().Version);
Console.WriteLine("Copyright (C) 2011 Matt Wrock.");
if (args.Length < 1)
{
PrintUsage();
Environment.Exit(1);
}
var sourcePath = args[0];
ProcessArgs(args);
if (!File.Exists(sourcePath))
{
Console.WriteLine("The source file you specified does not exist.");
Environment.Exit(1);
}
if (string.IsNullOrEmpty(targetPath))
{
var lastDot = sourcePath.LastIndexOf('.');
if (lastDot == -1)
{
lastDot = sourcePath.Length;
}
targetPath = sourcePath.Substring(0, lastDot) + "-quant.png";
}
Stopwatch stopwatch = Stopwatch.StartNew();
var quantizer = new WuQuantizer();
using (var bitmap = new Bitmap(sourcePath))
{
try
{
using (var quantized = quantizer.QuantizeImage(bitmap, alphaTransparency, alphaFader))
{
quantized.Save(targetPath, ImageFormat.Png);
}
}
catch (QuantizationException q)
{
Console.WriteLine(q.Message);
}
}
Console.WriteLine(@"Completed in {0:s\.fff} secs with peak memory usage of {1}.", stopwatch.Elapsed, Process.GetCurrentProcess().PeakWorkingSet64.ToString("#,#"));
}
public string Apply(string input_dir, string output_dir, string fn, int k, int tn)
{
try
{
string fn_only = Path.GetFileNameWithoutExtension(fn);
//MeanShift
Log.WriteLine("Meanshift in progress...");
MeanShiftMultiThreads mt = new MeanShiftMultiThreads();
string ms_path = output_dir + fn_only + "_ms.png";
mt.ApplyYIQMT(input_dir + fn, tn, 3, 3, ms_path);
mt = null;
GC.Collect();
Log.WriteLine("Meanshift finished");
// Median Cut
Log.WriteLine("Median Cut in progress...");
int mc_colors = 256;
string mc_path = output_dir + fn_only + "_mc" + mc_colors.ToString() + ".png";
using (Bitmap msimg = new Bitmap(output_dir + fn_only + "_ms.png"))
{
WuQuantizer wq = new WuQuantizer();
wq.QuantizeImage(msimg).Save(mc_path, ImageFormat.Png);
}
Log.WriteLine("Median Cut finished");
// KMeans
Log.WriteLine("KMeans in progress...");
MyKMeans kmeans = new MyKMeans();
string kmeans_path = output_dir + fn_only + "_mc" + mc_colors + "_k" + k + ".png";
kmeans.Apply(k, mc_path, kmeans_path);
kmeans = null;
GC.Collect();
Log.WriteLine("KMeans finished");
return kmeans_path;
}
catch (Exception e)
{
Log.WriteLine("ColorSegmentationWorker: " + e.Message);
Log.WriteLine(e.Source);
Log.WriteLine(e.StackTrace);
throw;
}
}
public static void Main(string[] args)
{
Console.WriteLine("nQuant Version {0} .net color Quantizer. An adaptation of Xiaolin Wu's fast optimal color quantizer.", Assembly.GetExecutingAssembly().GetName().Version);
Console.WriteLine("Copyright (C) 2011 Matt Wrock.");
if(args.Length < 1)
{
PrintUsage();
Environment.Exit(1);
}
var sourcePath = args[0];
ProcessArgs(args);
if (!File.Exists(sourcePath))
{
Console.WriteLine("The source file you specified does not exist.");
Environment.Exit(1);
}
if (string.IsNullOrEmpty(targetPath))
{
var lastDot = sourcePath.LastIndexOf('.');
if (lastDot == -1)
lastDot = sourcePath.Length;
targetPath = sourcePath.Substring(0, lastDot) + "-quant" + maxColors + ".png";
}
Stopwatch stopwatch = Stopwatch.StartNew();
var quantizer = new WuQuantizer();
using(var bitmap = new Bitmap(sourcePath))
{
try
{
using (var quantized = quantizer.QuantizeImage(bitmap, alphaTransparency, alphaFader, maxColors))
{
quantized.Save(targetPath, ImageFormat.Png);
}
}
catch (QuantizationException q)
{
Console.WriteLine(q.Message);
}
}
Console.WriteLine(@"Completed in {0:s\.fff} secs with peak memory usage of {1}.", stopwatch.Elapsed, Process.GetCurrentProcess().PeakWorkingSet64.ToString("#,#"));
}
public void QuantTest()
{
var opt = new WuQuantizer();
var source = new Bitmap("c:\\requestreduce\\requestreduce.sampleweb\\vstest\\vstest.png");
var image = opt.QuantizeImage(source, 10, 70);
image.Dispose();
opt = new WuQuantizer();
var watch = new Stopwatch();
watch.Start();
image = opt.QuantizeImage(source, 10, 70);
var ms = watch.ElapsedMilliseconds;
image.Save("c:\\requestreduce\\requestreduce.sampleweb\\vstest\\vstest-quant2.png", ImageFormat.Png);
image.Dispose();
source.Dispose();
}
/// <summary>
/// Encodes a bitmap into an indexed bitmap with a per-pixel palette color index using a specified number of colors in the palette.
/// </summary>
/// <param name="bitmap">The bitmap to encode.</param>
/// <param name="paletteColorCount">The number of colors to be present in the palette.</param>
/// <param name="indices">The per-pixel palette color indices.</param>
/// <param name="palette">The <see cref="Color"/> array containing the palette colors of the indexed bitmap.</param>
public static void QuantizeBitmap(Bitmap bitmap, int paletteColorCount, out byte[] indices, out Color[] palette)
{
int bitDepth = Image.GetPixelFormatSize(bitmap.PixelFormat);
if (bitDepth != 32)
{
bitmap = ConvertTo32bpp(bitmap);
}
WuQuantizer quantizer = new WuQuantizer();
Bitmap quantBitmap = (Bitmap)quantizer.QuantizeImage(bitmap, paletteColorCount, 0, 1);
palette = GetPalette(quantBitmap, paletteColorCount);
indices = GetIndices(quantBitmap);
}
protected unsafe byte[] BitmapToRawIndexed(Bitmap source, int maxColors, out byte[][] palette)
{
Bitmap img = source;
byte[] destination = new byte[img.Width * img.Height];
// If this is not a 32-bit ARGB bitmap, convert it to one
if (img.PixelFormat != PixelFormat.Format32bppArgb)
{
Bitmap newImage = new Bitmap(img.Width, img.Height, PixelFormat.Format32bppArgb);
using (Graphics g = Graphics.FromImage(newImage))
{
g.DrawImage(img, 0, 0, img.Width, img.Height);
}
img = newImage;
}
// Quantize the image
WuQuantizer quantizer = new WuQuantizer();
img = (Bitmap)quantizer.QuantizeImage(img, maxColors);
// Copy over the data to the destination. We need to use Stride in this case, as it may not
// always be equal to Width.
BitmapData bitmapData = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly, img.PixelFormat);
byte* pointer = (byte*)bitmapData.Scan0;
for (int y = 0; y < bitmapData.Height; y++)
{
for (int x = 0; x < bitmapData.Width; x++)
{
destination[(y * img.Width) + x] = pointer[(y * bitmapData.Stride) + x];
}
}
img.UnlockBits(bitmapData);
// Copy over the palette
palette = new byte[maxColors][];
for (int i = 0; i < maxColors; i++)
{
palette[i] = new byte[4];
palette[i][3] = img.Palette.Entries[i].A;
palette[i][2] = img.Palette.Entries[i].R;
palette[i][1] = img.Palette.Entries[i].G;
palette[i][0] = img.Palette.Entries[i].B;
}
return destination;
}
private void button_ReadImage_Click(object sender, EventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog(); //创建事例
string dir = Environment.GetFolderPath(Environment.SpecialFolder.Templates); //指定初始目录
dlg.InitialDirectory = dir; //指定初始目录
dlg.Title = "图表对话框";
dlg.ShowReadOnly = true; //以只读方式打开
dlg.ShowHelp = true; //显示帮助按钮 ///////
dlg.Filter = "图表.jpg|*.jpg|图表.tif|*.tif|图表.bmp|*.bmp|所有文件|*.*"; //文件过滤器，指定打开文件类型
//dlg.ShowDialog();//打开对话框
//BMP 文件(*.bmp) | *.bmp | JPEG 文件(*.jpg, *.jpeg) | *.jpg, *.jpeg | PNG 文件(*.png) | *.png | GIF 文件(*.gif) | *.gif | TIFF 文件(*.tiff, *.tif) | *.tiff
//MessageBox.Show(dlg.Title);//打开消息
//dlg.Multiselect = true;//是否允许一次打开多个文件
dlg.Multiselect = false; //是否允许一次打开多个文件
// if (dlg.ShowDialog() == DialogResult.OK)
//{
if (dlg.CheckPathExists) //检查路径是否存在
{
if (dlg.CheckFileExists) //检查文件是否存在
{
// if (dlg.ValidateNames)//检查是否有效Win32文件名
// {
if (dlg.ShowDialog() == DialogResult.OK)
{
string s = dlg.FileNames[0];
// foreach (string s in dlg.FileNames)
//{ //string fileName = dlg.FileName;
//MessageBox.Show("打开文件:" + s);//打开消息对话框
bmDraw = new Bitmap(this.pictureBox_Image.Width, this.pictureBox_Image.Height);
Bitmap inputimage = (Bitmap)Image.FromFile(s);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bmDraw);
double scale_width = Convert.ToDouble(bmDraw.Width) / inputimage.Width;
double scale_height = Convert.ToDouble(bmDraw.Height) / inputimage.Height;
double scale = scale_width;
if (scale_width > scale_height)
{
scale = scale_height;
}
int centerx = bmDraw.Width / 2;
int centery = bmDraw.Height / 2;
int newWidth = Convert.ToInt32(inputimage.Width * scale / 2);
int newHeight = Convert.ToInt32(inputimage.Height * scale / 2);
Rectangle rg = new Rectangle(centerx - newWidth, centery - newHeight, newWidth * 2, newHeight * 2);
//将bm内rg所指定的区域绘制到bm1
g.DrawImage(inputimage, rg);
this.pictureBox_Image.Image = bmDraw;
var sourcePath = s;
if (!File.Exists(sourcePath))
{
Console.WriteLine("The source file you specified does not exist.");
Environment.Exit(1);
}
var lastDot = sourcePath.LastIndexOf('.');
var targetPath = sourcePath.Insert(lastDot, "-quant");
//if(args.Length > 1)
// targetPath = args[1];
var quantizer = new WuQuantizer();
// QuantizedPalette ColorPalette = new QuantizedPalette();
var bitmap0 = new Bitmap(sourcePath);
Bitmap bitmap1 = ConvertTo32bpp(bitmap0);
using (var bitmap = bitmap1)
//using (var bitmap = new Bitmap(sourcePath))
{
using (var quantized = quantizer.QuantizeImage(bitmap))
{
QuantizedPalette palette = quantizer.palette;
//quantized.Save(targetPath, ImageFormat.Png);
inputimage = new Bitmap(quantized);
scale_width = Convert.ToDouble(bmDraw.Width) / inputimage.Width;
scale_height = Convert.ToDouble(bmDraw.Height) / inputimage.Height;
scale = scale_width;
if (scale_width > scale_height)
{
scale = scale_height;
}
centerx = bmDraw.Width / 2;
centery = bmDraw.Height / 2;
newWidth = Convert.ToInt32(inputimage.Width * scale / 2);
newHeight = Convert.ToInt32(inputimage.Height * scale / 2);
rg = new Rectangle(centerx - newWidth, centery - newHeight, newWidth * 2, newHeight * 2);
//将bm内rg所指定的区域绘制到bm1
g.DrawImage(inputimage, rg);
this.pictureBox_Image.Image = bmDraw;
}
}
}
// }
}
}
}
public void Save(string v)
{
stage.Unlock(true);
WuQuantizer quantizer = new WuQuantizer();
Image quantized = quantizer.QuantizeImage(bmp, 128, 0);
quantized.Save(v, System.Drawing.Imaging.ImageFormat.Png);
}
public RSImage(string filename, out Exception ex)
{
try
{
Bitmap bmp = new Bitmap(filename, true);
if (bmp.PixelFormat != System.Drawing.Imaging.PixelFormat.Format32bppArgb)
bmp.MakeTransparent(Color.Transparent); //force bmp to be 32-bit
WuQuantizer q = new WuQuantizer();
bmp = new Bitmap(q.QuantizeImage(bmp));
QuantizedPalette p = q.Palette;
Palette = new Color[p.Colors.Count];
for (int i = 0; i < p.Colors.Count; i++)
Palette[i] = p.Colors[i];
Pixels = new Color[bmp.Width * bmp.Height];
for (int i = 0; i < bmp.Width * bmp.Height; i++)
Pixels[i] = bmp.GetPixel(i % bmp.Width, i / bmp.Width);
WholeWidth = Width = bmp.Width;
WholeHeight = Height = bmp.Height;
XOffset = 0;
YOffset = 0;
ex = null;
}
catch (Exception e)
{
ex = e;
Pixels = null;
}
}
public static SqlBoolean SaveToFolderByZoomXY8bpp(SqlBinary image, SqlString rootFolderPath, SqlInt32 Zoom, SqlInt32 X, SqlInt32 Y)
{
SqlBoolean result = false;
using (MemoryStream ms = new MemoryStream())
{
ms.Write(image.Value, 0, image.Length);
SetBeginPosition(ms);
using (var bitmap = new Bitmap(ms))
{
if (bitmap == null) throw new Exception("Не удалось инициализировать объект Bitmap из Stream");
var quantizer = new WuQuantizer();
if (quantizer == null) throw new Exception("Не удалось инициализировать объект WuQuantizer");
using (var quantized = quantizer.QuantizeImage(bitmap))
{
if (quantized == null) throw new Exception("Не удалось инициализировать объект Image с помощью экземпляра WuQuantizer");
//try
//{
string zoomFolder = string.Format(@"{0}/{1}", rootFolderPath, Zoom);
CheckFolderExistsCreate(zoomFolder);
string xFolder = string.Format(@"{0}/{1}", zoomFolder, X);
CheckFolderExistsCreate(xFolder);
quantized.Save(string.Format("{0}/{1}/{2}/{3}.png", rootFolderPath, Zoom, X, Y), ImageFormat.Png);
//using (MemoryStream msquant = new MemoryStream())
//{
// quantized.Save(msquant, ImageFormat.Png);
// SetBeginPosition(msquant);
// using (Icon2TileRendering renderer = new Icon2TileRendering(msquant))
// {
// renderer.SaveToPngFile((string) rootFolderPath, Zoom.ToString(), X.ToString(), Y.ToString());
// result = true;
// }
//}
//Image i2 = new Bitmap(quantized);
//CheckFolder((string)rootFolderPath, Zoom.ToString(), X.ToString(), Y.ToString())
//;
//i2.Save(string.Format("{0}/{1}/{2}/{3}.png", rootFolderPath, Zoom, X, Y), ImageFormat.Png);
//var img = ImageToStreamToImage(quantized);
//img.Save(string.Format("{0}/{1}/{2}/{3}.png", rootFolderPath, Zoom, X, Y), ImageFormat.Png);
//quantized.Save(string.Format("{0}/{1}/{2}/{3}.png", rootFolderPath, Zoom, X, Y), ImageFormat.Png);
//}
//catch (System.Exception ex)
//{
// throw new Exception(string.Format("SaveToFolderByZoomXY8bpp {0}", ex.Message));
//}
}
}
}
// Put your code here
return result;
}
