/// <summary>
/// Encodes the captures into a single packet and prepares for it's transmission
/// </summary>
/// <param name="id">Client Id</param>
/// <param name="screenImg">Screenshot</param>
/// <param name="logStream">Key & Mouse event log stream</param>
/// <param name="isSingleCapture">Live stream or buffered stream</param>
public void EncodeCapture(int id, Bitmap screenImg, Stream logStream, bool isSingleCapture)
{
Quantizer oq = this.GetQuantizer();//new OctreeQuantizer(this.CaptureQuantizePalette, this.CaptureQuantizeDepth);
screenImg = oq.Quantize(ScreenSnap.ShrinkBitmap(screenImg, this.CaptureShrinkFactor));
this.EncodeCapture(id, new CapturePacket(ScreenSnap.SnapshotToStream(screenImg, System.Drawing.Imaging.ImageFormat.Png), logStream), isSingleCapture);
}
private static readonly byte[] gifEnd = new byte[] { 0x3b }; //结束信息
public override void AppendFrame(Bitmap image, int delay)
{
mStream.SetLength(0);
mStream.Position = 0;
using (var tempGif = quantizer.Quantize(image))
{
tempGif.Save(mStream, ImageFormat.Gif);
}
byte[] tempArray = mStream.GetBuffer();
// 781开始为Graphic Control Extension块 标志为21 F9 04
tempArray[784] = (byte)0x09; //图像刷新时屏幕返回初始帧 貌似不打会bug 意味不明 测试用
delay = delay / 10;
tempArray[785] = (byte)(delay & 0xff);
tempArray[786] = (byte)(delay >> 8 & 0xff); //写入2字节的帧delay
// 787为透明色索引 788为块结尾0x00
tempArray[787] = (byte)0xff;
// 789开始为Image Descriptor块 标志位2C
// 790~793为帧偏移大小 默认为0
// 794~797为帧图像大小 默认他
tempArray[798] = (byte)(tempArray[798] | 0X87); //本地色彩表标志
//写入到gif文件
bWriter.Write(tempArray, 781, 18);
bWriter.Write(tempArray, 13, 768);
bWriter.Write(tempArray, 799, (int)mStream.Length - 800);
}
public static void Quantize(ref PilotSettings serverVariables)
{
Object settingsObject = serverVariables;
Object speedSettingsObject = serverVariables.speeds;
var varibles = typeof(PilotSettings).GetFields();
for (int i = 0; i < varibles.Length; i++)
{
if (varibles[i].FieldType == typeof(float))
{
var field = typeof(PilotSettings).GetField(varibles[i].Name);
field.SetValue(settingsObject, Quantizer.Quantize((float)field.GetValue(settingsObject), 100));
}
}
var speedVaribles = typeof(PilotSettings.Speeds).GetFields();
for (int i = 0; i < speedVaribles.Length; i++)
{
if (speedVaribles[i].FieldType == typeof(float))
{
var field = typeof(PilotSettings.Speeds).GetField(speedVaribles[i].Name);
field.SetValue(speedSettingsObject, Quantizer.Quantize((float)field.GetValue(speedSettingsObject), 100));
}
}
serverVariables = (PilotSettings)settingsObject;
serverVariables.speeds = (PilotSettings.Speeds)speedSettingsObject;
}
/// <summary>
/// Writes to the specified stream.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="image">The image.</param>
/// <returns>True if it writes successfully, false otherwise.</returns>
public override bool Write(BinaryWriter stream, Image image)
{
var Quantized = Quantizer.Quantize(image, Quality);
LoadImage(image, Quantized);
WriteToFile(stream);
return(true);
}
/// <summary>
/// Writes to the specified stream.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="animation">The animation.</param>
/// <returns>True if it writes successfully, false otherwise.</returns>
public override bool Write(BinaryWriter writer, Animation animation)
{
var Quantized = Quantizer.Quantize(animation[0], Quality);
LoadAnimation(animation, Quantized);
WriteToFile(writer);
return(true);
}
public void TestQuantize()
{
Quantizer q = new Quantizer(0.0, 0.1, 0.3);
Assert.AreEqual(0, q.Quantize(-0.1));
Assert.AreEqual(1, q.Quantize(0.0));
Assert.AreEqual(1, q.Quantize(0.03));
Assert.AreEqual(2, q.Quantize(0.1));
Assert.AreEqual(2, q.Quantize(0.13));
Assert.AreEqual(3, q.Quantize(0.3));
Assert.AreEqual(3, q.Quantize(0.33));
Assert.AreEqual(3, q.Quantize(1000.0));
}
public void GenerateImagesForDoc()
{
//var testData0500 = TestDataFactory.Data.Single(x => x.ImageKey == "0500");
//var testData0413 = TestDataFactory.Data.Single(x => x.ImageKey == "0413");
var image = new Mat(@"C:\Users\Winkler\Desktop\orig.png", LoadImageType.AnyColor);
var keypoints = new List <Point> {
new Point(140, 116), new Point(477, 120), new Point(163, 370), new Point(447, 369)
};
var testData0500 = new { Keypoints = keypoints, Image = image };
var configMock = TestHelper.GetFakeConfig();
//var quantizer = new Quantizer(configMock.Object);
// simple threshold
IQuantizer quantizer = new SimpleThresholdQuantizer {
Threshold = 220
};
quantizer.Keypoints = testData0500.Keypoints;
var quantizedImage = quantizer.Quantize(testData0500.Image);
//TestHelper.Show(quantizedImage);
TestHelper.Save(quantizedImage, "threshold_simple.png");
// adaptive threshold
quantizer = new Quantizer(configMock.Object)
{
ThresholdBlockSize = 17, ThresholdConstant = 6
};
quantizer.Keypoints = testData0500.Keypoints;
quantizedImage = quantizer.Quantize(testData0500.Image);
//TestHelper.Show(quantizedImage);
TestHelper.Save(quantizedImage, "threshold_adaptive.png");
// warp
quantizer = new WarpOnlyQuantizer();
quantizer.Keypoints = testData0500.Keypoints;
quantizedImage = quantizer.Quantize(testData0500.Image);
//TestHelper.Show(quantizedImage);
TestHelper.Save(quantizedImage, "warp_result.png");
// morphological
quantizer = new MorphologyQuantizer(configMock.Object)
{
ThresholdBlockSize = 17, ThresholdConstant = 6
};
quantizer.Keypoints = testData0500.Keypoints;
quantizedImage = quantizer.Quantize(testData0500.Image);
//TestHelper.Show(quantizedImage);
TestHelper.Save(quantizedImage, "opening_result.png");
}
public static (double[] scale, double bias) QuantizeWeights(bool isConv2d, Tensor <float> weights, K210ConvLayerConfig config, int weightsBits)
{
#if CHANNEL_WISE
var kernels = weights.ToDenseTensor().Buffer.Span;
var channels = weights.Dimensions[isConv2d ? 0 : 1];
var channelSize = weights.Dimensions.GetSize() / channels;
var totalRange = Quantizer.GetRange(kernels);
var scales = new double[channels];
for (int i = 0; i < channels; i++)
{
double s;
var buffer = kernels.Slice(i * channelSize, channelSize);
var range = Quantizer.GetRange(buffer);
var s1 = totalRange.Max / range.Max;
var s2 = totalRange.Min / range.Min;
s = (s1 < 0 || s2 < 0) ? Math.Max(s1, s2) : Math.Min(s1, s2);
Debug.Assert(s > 0);
for (int j = 0; j < buffer.Length; j++)
{
buffer[j] = (float)(buffer[j] * s);
}
scales[i] = s;
}
(var scale, var bias) = Quantizer.GetRange(kernels).GetScaleBias(weightsBits);
(var mul, var shift) = Quantizer.ExtractValueAndShift(bias, 24, 15);
config.Weights = Quantizer.Quantize(kernels, scale, bias, weightsBits);
config.ArgX = (int)Math.Round(mul);
config.ShiftX = shift;
for (int i = 0; i < scales.Length; i++)
{
scales[i] *= scale;
}
return(scales, bias);
#else
var buffer = weights.ToDenseTensor().Buffer.Span;
(var scale, var bias) = GetRange(buffer).GetScaleBias();
(var mul, var shift) = ExtractValueAndShift(bias, 24, 15);
config.Weights = Quantize(buffer, scale, bias);
config.ArgX = (int)Math.Round(mul);
config.ShiftX = shift;
return(Enumerable.Repeat(scale, weights.Dimensions[0]).ToArray(), bias);
#endif
}
/// <summary>
/// Loads the animation.
/// </summary>
/// <param name="animation">The animation.</param>
/// <param name="quantizedImage">The quantized image.</param>
private void LoadAnimation(Animation animation, QuantizedImage quantizedImage)
{
var TempImage = animation[0];
var TransparencyIndex = quantizedImage.TransparentIndex;
Header = new FileHeader();
ScreenDescriptor = new LogicalScreenDescriptor(TempImage, TransparencyIndex, BitDepth);
Frames.Add(new Frame(TempImage, quantizedImage, BitDepth, animation.Delay));
if (animation.Count > 1)
{
AppExtension = new ApplicationExtension(animation.RepeatCount, animation.Count);
for (int x = 1; x < animation.Count; ++x)
{
quantizedImage = Quantizer.Quantize(animation[x], Quality);
TempImage = animation[x];
Frames.Add(new Frame(TempImage, quantizedImage, BitDepth, animation.Delay));
}
}
}
public static Image Quantize(Image image, Quality quality = Quality.Bpp8)
{
if (quality == Quality.Inherit)
{
return(image);
}
Quantizer quantizer = quality switch
{
Quality.Grayscale => new GrayscaleQuantizer(),
Quality.Bpp1 => new OctreeQuantizer(1, 1),
Quality.Bpp2 => new OctreeQuantizer(3, 2),
Quality.Bpp4 => new OctreeQuantizer(15, 4),
Quality.Bpp8 => new OctreeQuantizer(255, 8),
_ => new OctreeQuantizer(255, 8)
};
return(quantizer.Quantize(image));
}
}
public static void CreateGifStream(Image image, Stream stream, Quality quality = Quality.Bpp8)
{
if (quality == Quality.Inherit)
{
image.Save(stream, ImageFormat.Gif);
}
else
{
Quantizer quantizer = quality switch
{
Quality.Grayscale => new GrayscaleQuantizer(),
Quality.Bpp1 => new OctreeQuantizer(1, 1),
Quality.Bpp2 => new OctreeQuantizer(3, 2),
Quality.Bpp4 => new OctreeQuantizer(15, 4),
Quality.Bpp8 => new OctreeQuantizer(255, 8),
_ => new OctreeQuantizer(255, 8)
};
using (Bitmap result = quantizer.Quantize(image))
result.Save(stream, ImageFormat.Gif);
}
}
private CompressionStats Compress( IGrid grid,
ICompressor compressor,
double[] errors,
string outName,
ProgressViewModel progressBar )
{
double[] leftBorders = new double[grid.ColumnCount];
double[] rightBorders = new double[grid.ColumnCount];
var qs = new IQuantization[grid.ColumnCount];
var distrs = new IDistribution[grid.ColumnCount];
progressBar.Status = "Quantizing columns...";
Parallel.For( 0, grid.ColumnCount, column =>
{
var distr = new EmpiricalDistribution( grid, column );
leftBorders[column] = double.MaxValue;
rightBorders[column] = double.MinValue;
for ( int row = 0; row < grid.RowCount; ++row )
{
double value = grid.GetValue( row, column );
leftBorders[column] = leftBorders[column] < value ? leftBorders[column] : value;
rightBorders[column] = rightBorders[column] > value ? rightBorders[column] : value;
}
var quantizer = new Quantizer( leftBorders[column], rightBorders[column] );
var quantization = quantizer.Quantize( errors[column], distr );
lock ( _lockGuard )
{
progressBar.Progress += 1.0 / ( grid.ColumnCount + 1 );
distrs[column] = distr;
qs[column] = quantization;
}
} );
var quantizations = new List<IQuantization>( qs );
var distributions = new List<IDistribution>( distrs );
progressBar.Status = "Writing archive...";
progressBar.Progress = ( double )grid.ColumnCount / ( grid.ColumnCount + 1 );
ICompressionResult result;
using ( var stream = new FileOutputStream( outName ) )
{
result = compressor.Compress( grid, quantizations, stream );
}
progressBar.Progress = 1.0;
progressBar.TryClose( );
return new CompressionStats
{
CompressionResult = result,
Distributions = distributions,
LeftBorders = leftBorders,
RightBorders = rightBorders,
Quantizations = quantizations
};
}
private static void QuantizeActivation(K210Conv2d layer, double postMul, QuantizationRange range, QuantizationRange beforeActRange, K210ConvLayerConfig config)
{
if (layer.NonTrivialActivation == null)
{
switch (layer.FusedActivationFunction)
{
case ActivationFunctionType.Linear:
case ActivationFunctionType.Relu:
case ActivationFunctionType.Relu6:
break;
default:
throw new NotSupportedException($"Activation of {layer.FusedActivationFunction} is not supported.");
}
var starts = new ulong[]
{
0x800000000, 0xf7d4cf4b8, 0xf8ed5a20c, 0xfa05e4f60,
0xfb2e05baa, 0xfc46908fe, 0xfd5f1b652, 0xfe77a63a6,
0xff9fc6ff0, 0xfffd4a9b7, 0, 0x7FFFFFFF0,
0x7FFFFFFF1, 0x7FFFFFFF2, 0x7FFFFFFF3, 0x7FFFFFFF4
};
for (int i = 0; i < starts.Length; i++)
{
var param = config.ActConfigs[i] = new K210LayerActConfig();
param.StartX = starts[i];
if (i == 10)
{
(var mul, var shift) = Quantizer.ExtractValueAndShift(1 / postMul, 16, 20);
param.Mul = (int)Math.Round(mul);
param.Shift = shift;
}
}
}
else if (layer.NonTrivialActivation is LeakyRelu leakyRelu)
{
(var scale, var bias) = range.GetScaleBias(8);
var zero = (long)(Quantizer.Quantize(0, scale, bias) * postMul);
var yTable = Generator.IntegerStep(0, (int)-bias, 15).Take(14).ToArray();
for (int i = 0; i < 16; i++)
{
var param = config.ActConfigs[i] = new K210LayerActConfig();
if (i == 0)
{
param.StartX = 0x800000000;
}
else if (i == 15)
{
(var mul, var shift) = Quantizer.ExtractValueAndShift(1 / postMul, 16, 20);
param.StartX = (ulong)zero;
param.Mul = (int)Math.Round(mul);
param.Shift = shift;
param.Add = (byte)(-bias);
}
else
{
// f(x) = (1 - slope) * zero + x * slope
// f(x1) - f(x0) = (x1 - x0) * slope
// x0 = zero - (zero - y0) / slope
var add = (byte)yTable[i - 1];
var y0 = add * postMul;
var x0 = zero - (zero - y0) / leakyRelu.Slope;
(var mul, var shift) = Quantizer.ExtractValueAndShift(1 / postMul * leakyRelu.Slope, 16, 20);
param.StartX = (ulong)(long)Math.Floor(x0);
param.Mul = (int)Math.Round(mul);
param.Shift = shift;
param.Add = add;
}
}
}
else
{
throw new NotSupportedException($"Activation of {layer.NonTrivialActivation.GetType().Name} is not supported.");
}
}
public int Classify(IntegralImage image, int offset)
{
double value = m_filter.Apply(image, offset);
return(m_quantizer.Quantize(value));
}
public async void InitPlot( )
{
var reader = new CsvGridReader( 1024, ';' );
OpenFileDialog openFileDialog = new OpenFileDialog
{
Filter = "Text files|*.csv",
ValidateNames = true
};
var column = 0;
var fileName = openFileDialog.ShowDialog( ) == true ? openFileDialog.FileName : null;
if ( fileName == null )
{ return; }
var grid = await Task<IGrid>.Factory.StartNew( ( ) => reader.Read( fileName, false, false ) );
double left = double.MaxValue, right = double.MinValue;
for ( int i = 0; i < grid.RowCount; ++i )
{
var value = grid.GetValue( i, column );
left = left < value ? left : value;
right = right > value ? right : value;
}
var quantizer = new Quantizer( left, right );
var empirical = new EmpiricalDistribution( grid, column );
var q = await Task<IQuantization>.Factory.StartNew( ( ) => quantizer.Quantize( 15, 1e-3, empirical ) );
var zero = new LineSeries
{
Color = OxyColor.FromRgb( 0, 0, 0 ),
StrokeThickness = 1
};
zero.Points.Add( new DataPoint( left, 0 ) );
zero.Points.Add( new DataPoint( right, 0 ) );
plot.Series.Add( zero );
var func = new FunctionSeries( x => empirical.Density( x ), left, right, 1e-2 );
plot.Series.Add( func );
foreach ( var border in q.Borders )
{
var line = new LineSeries
{
LineStyle = LineStyle.Dash,
Color = OxyColor.FromRgb( 0, 0, 0 ),
StrokeThickness = 1
};
line.Points.Add( new DataPoint( border, 3e-1 ) );
line.Points.Add( new DataPoint( border, -3e-2 ) );
plot.Series.Add( line );
}
foreach ( var code in q.Codes )
{
var line = new LineSeries
{
LineStyle = LineStyle.Dash,
Color = OxyColor.FromRgb( 140, 140, 140 ),
StrokeThickness = 0.5
};
line.Points.Add( new DataPoint( code, 3e-1 ) );
line.Points.Add( new DataPoint( code, -3e-2 ) );
plot.Series.Add( line );
}
var codes = from code in q.Codes
select new ScatterPoint( code, empirical.Density( code ) );
var points = new ScatterSeries
{
MarkerType = MarkerType.Circle,
MarkerStroke = OxyColor.FromRgb( 2, 133, 230 )/*( 255, 0, 0 )*/,
MarkerFill = OxyColor.FromRgb( 2, 133, 230 )/*( 255, 115, 41 )*/
};
points.Points.AddRange( codes );
plot.Series.Add( points );
PlotView.Model = plot;
}