/// <summary>
/// This method compares the acoustic indices derived from two different long duration recordings of the same length.
/// It takes as input six csv files of acoustic indices in spectrogram columns, three csv files for each of the original recordings to be compared.
/// The method produces one spectrogram image files:
/// 1) A false-colour difference spectrogram, where the difference is shown as a plus/minus departure from grey.
/// </summary>
public static void DrawDifferenceSpectrogram(DirectoryInfo ipdir, FileInfo ipFileName1, FileInfo ipFileName2, DirectoryInfo opdir)
{
var cs1 = new LDSpectrogramRGB(minuteOffset, xScale, sampleRate, frameWidth, colorMap)
{
FileName = ipFileName1.Name,
ColorMode = colorMap,
BackgroundFilter = backgroundFilterCoeff,
};
string[] keys = colorMap.Split('-');
cs1.ReadCsvFiles(ipdir, ipFileName1.Name, keys);
if (cs1.GetCountOfSpectrogramMatrices() == 0)
{
LoggedConsole.WriteLine("There are no spectrogram matrices in cs1.dictionary.");
return;
}
var cs2 = new LDSpectrogramRGB(minuteOffset, xScale, sampleRate, frameWidth, colorMap)
{
FileName = ipFileName2.Name,
ColorMode = colorMap,
BackgroundFilter = backgroundFilterCoeff,
};
cs2.ReadCsvFiles(ipdir, ipFileName2.Name, keys);
if (cs2.GetCountOfSpectrogramMatrices() == 0)
{
LoggedConsole.WriteLine("There are no spectrogram matrices in cs2.dictionary.");
return;
}
//string title1 = String.Format("DIFFERENCE SPECTROGRAM ({0} - {1}) (scale:hours x kHz) (colour: R-G-B={2})", ipFileName1, ipFileName2, cs1.ColorMODE);
//Image deltaSp1 = LDSpectrogramDifference.DrawDifferenceSpectrogram(cs1, cs2, colourGain);
//Image titleBar1 = LDSpectrogramRGB.DrawTitleBarOfFalseColourSpectrogram(title1, deltaSp1.Width, SpectrogramConstants.HEIGHT_OF_TITLE_BAR);
//deltaSp1 = LDSpectrogramRGB.FrameSpectrogram(deltaSp1, titleBar1, minuteOffset, cs1.X_interval, cs1.Y_interval);
//string opFileName1 = ipFileName1 + ".Difference.COLNEG.png";
//deltaSp1.Save(Path.Combine(opdir.FullName, opFileName1));
//Draw positive difference spectrograms in one image.
double colourGain = 2.0;
Image <Rgb24>[] images = DrawPositiveDifferenceSpectrograms(cs1, cs2, colourGain);
int nyquist = cs1.SampleRate / 2;
int herzInterval = 1000;
string title =
$"DIFFERENCE SPECTROGRAM where {ipFileName1} > {ipFileName2}. (scale:hours x kHz) (colour: R-G-B={cs1.ColorMode})";
var titleBar = LDSpectrogramRGB.DrawTitleBarOfFalseColourSpectrogram(title, images[0].Width);
images[0] = LDSpectrogramRGB.FrameLDSpectrogram(images[0], titleBar, cs1, nyquist, herzInterval);
title = string.Format("DIFFERENCE SPECTROGRAM where {1} > {0} (scale:hours x kHz) (colour: R-G-B={2})", ipFileName1, ipFileName2, cs1.ColorMode);
titleBar = LDSpectrogramRGB.DrawTitleBarOfFalseColourSpectrogram(title, images[1].Width);
images[1] = LDSpectrogramRGB.FrameLDSpectrogram(images[1], titleBar, cs1, nyquist, herzInterval);
Image combinedImage = ImageTools.CombineImagesVertically(images);
string opFileName = ipFileName1 + "-" + ipFileName2 + ".Difference.png";
combinedImage.Save(Path.Combine(opdir.FullName, opFileName));
}
/// <summary>
/// This is cut down version of the method of same name in LDSpectrogramRGB.cs.
/// </summary>
/// <param name="ldSpectrogramConfig">config for ldfc spectrogram.</param>
/// <param name="outputDirectory">outputDirectory.</param>
/// <param name="indexGenerationData">indexGenerationData.</param>
/// <param name="basename">stem name of the original recording.</param>
/// <param name="indexSpectrograms">Optional spectra to pass in. If specified the spectra will not be loaded from disk!.</param>
private static string DrawSpectrogramsFromSpectralIndices(
LdSpectrogramConfig ldSpectrogramConfig,
DirectoryInfo outputDirectory,
IndexGenerationData indexGenerationData,
string basename,
Dictionary <string, double[, ]> indexSpectrograms = null)
{
string colorMap1 = ldSpectrogramConfig.ColorMap1; // SpectrogramConstants.RGBMap_ACI_ENT_EVN;
string colorMap2 = ldSpectrogramConfig.ColorMap2; // SpectrogramConstants.RGBMap_BGN_PMN_OSC;
double blueEnhanceParameter = ldSpectrogramConfig.BlueEnhanceParameter.Value;
var cs1 = new LDSpectrogramRGB(ldSpectrogramConfig, indexGenerationData, colorMap1);
string fileStem = basename;
cs1.FileName = fileStem;
// calculate start time by combining DatetimeOffset with minute offset.
cs1.StartOffset = indexGenerationData.AnalysisStartOffset;
if (indexGenerationData.RecordingStartDate.HasValue)
{
DateTimeOffset dto = (DateTimeOffset)indexGenerationData.RecordingStartDate;
cs1.RecordingStartDate = dto;
if (dto != null)
{
cs1.StartOffset = dto.TimeOfDay + cs1.StartOffset;
}
}
var indexProperties = IndexCalculateSixOnly.GetIndexProperties();
cs1.SetSpectralIndexProperties(indexProperties);
// Load the Index Spectrograms into a Dictionary
cs1.LoadSpectrogramDictionary(indexSpectrograms);
if (cs1.GetCountOfSpectrogramMatrices() == 0)
{
Log.Error("No spectrogram matrices in the dictionary. Spectrogram files do not exist?");
throw new InvalidOperationException("Cannot find spectrogram matrix files");
}
// draw all available gray scale index spectrograms.
var keys = indexProperties.Keys.ToArray();
cs1.DrawGreyScaleSpectrograms(outputDirectory, fileStem, keys);
// create two false-color spectrogram images
var image1NoChrome = cs1.DrawFalseColorSpectrogramChromeless(cs1.ColorMode, colorMap1, blueEnhanceParameter);
var image2NoChrome = cs1.DrawFalseColorSpectrogramChromeless(cs1.ColorMode, colorMap2, blueEnhanceParameter);
var spacer = new Image <Rgb24>(image1NoChrome.Width, 10);
var imageList = new[] { image1NoChrome, spacer, image2NoChrome, spacer };
Image image3 = ImageTools.CombineImagesVertically(imageList);
var outputPath = FilenameHelpers.AnalysisResultPath(outputDirectory, fileStem, "2Maps", "png");
image3.Save(outputPath);
return(outputPath);
}
} // method DrawRidgeSpectrograms()
public static Image DrawRidgeSpectrograms(DirectoryInfo inputDirectory, FileInfo ipConfig, string fileStem, double scale, Dictionary <string, double[, ]> spectra = null)
{
string analysisType = AcousticIndices.TowseyAcoustic;
//double backgroundFilter = 0.0; // 0.0 means small values are removed.
double backgroundFilter = 0.75; // 0.75 means small values are accentuated.
var dataScale = TimeSpan.FromSeconds(scale);
Dictionary <string, IndexProperties> indexProperties = IndexProperties.GetIndexProperties(ipConfig);
string[] keys = SpectralPeakTracks.GetDefaultRidgeKeys();
// read the csv files of the indices in keys array
if (spectra == null)
{
//C:\SensorNetworks\Output\BIRD50\Training\ID0001\Towsey.Acoustic\ID0001__Towsey.Acoustic.ACI
spectra = IndexMatrices.ReadSpectralIndices(inputDirectory, fileStem, analysisType, keys);
}
var cs1 = new LDSpectrogramRGB(minuteOffset: TimeSpan.Zero, xScale: dataScale, sampleRate: 22050, frameWidth: 512, colorMap: null)
{
FileName = fileStem,
BackgroundFilter = backgroundFilter,
IndexCalculationDuration = dataScale,
};
// set the relevant dictionary of index properties
cs1.SetSpectralIndexProperties(indexProperties);
cs1.SpectrogramMatrices = spectra;
if (cs1.GetCountOfSpectrogramMatrices() == 0)
{
LoggedConsole.WriteLine("WARNING: " + fileStem + ": No spectrogram matrices in the dictionary. Spectrogram files do not exist?");
return(null);
}
else if (cs1.GetCountOfSpectrogramMatrices() < keys.Length)
{
LoggedConsole.WriteLine("WARNING: " + fileStem + ": Missing indices in the dictionary. Some files do not exist?");
return(null);
}
var stringFont = Drawing.Tahoma8;
// constants for labels
Color[] color = { Color.Blue, Color.Green, Color.Red, Color.Orange, Color.Purple };
int labelYvalue = 3;
int labelIndex = 0;
Image <Rgb24> ridges = null;
foreach (string key in keys)
{
Image <Rgb24> greyScaleImage = (Image <Rgb24>)cs1.DrawGreyscaleSpectrogramOfIndex(key);
var pixelWidth = greyScaleImage.Width;
int height = greyScaleImage.Height;
ridges.Mutate(g2 =>
{
if (ridges == null)
{
ridges = new Image <Rgb24>(pixelWidth, height);
g2.Clear(Color.White);
}
g2.DrawText(key, stringFont, color[labelIndex], new PointF(0, labelYvalue));
});
labelYvalue += 10;
//g1.DrawLine(new Pen(Color.Black, 1), 0, 0, width, 0);//draw upper boundary
//g1.DrawLine(new Pen(Color.Black, 1), 0, 1, width, 1);//draw upper boundary
// transfer greyscale image to colour image
for (int y = 0; y < height; y++)
{
for (int x = 0; x < pixelWidth; x++)
{
var col = greyScaleImage[x, y];
if (col.G < 150)
{
ridges[x, y] = color[labelIndex];
}
}
}
labelIndex += 1;
} //foreach key
return(ridges);
} // method DrawRidgeSpectrograms()
} // method DrawAggregatedSpectrograms()
public static Image <Rgb24> DrawGrayScaleSpectrograms(Arguments arguments, string fileStem, TimeSpan dataScale, Dictionary <string, double[, ]> spectra = null)
{
// default values
int sampleRate = 22050;
int frameWidth = 512;
//double backgroundFilter = 0.0; // 0.0 means small values are removed.
double backgroundFilter = 0.75; // 0.75 means small values are accentuated.
string analysisType = AcousticIndices.TowseyAcoustic;
string[] keys = LDSpectrogramRGB.GetArrayOfAvailableKeys();
var inputDirectory = arguments.InputDataDirectory;
Dictionary <string, IndexProperties> indexProperties = IndexProperties.GetIndexProperties(arguments.IndexPropertiesConfig.ToFileInfo());
if (spectra == null)
{
spectra = IndexMatrices.ReadSpectralIndices(inputDirectory.ToDirectoryInfo(), fileStem, analysisType, keys);
}
// note: the spectra are oriented as per visual orientation, i.e. xAxis = time frames
//int frameCount = spectra[keys[0]].GetLength(1);
var cs1 = new LDSpectrogramRGB(minuteOffset: TimeSpan.Zero, xScale: dataScale, sampleRate: sampleRate, frameWidth: frameWidth, colorMap: null)
{
FileName = fileStem,
BackgroundFilter = backgroundFilter,
IndexCalculationDuration = dataScale,
};
cs1.SetSpectralIndexProperties(indexProperties); // set the relevant dictionary of index properties
cs1.SpectrogramMatrices = spectra;
if (cs1.GetCountOfSpectrogramMatrices() == 0)
{
LoggedConsole.WriteLine("WARNING: " + fileStem + ": No spectrogram matrices in the dictionary. Spectrogram files do not exist?");
return(null);
}
var list = new List <Image <Rgb24> >();
var stringFont = Drawing.Arial14;
foreach (string key in keys)
{
var image = cs1.DrawGreyscaleSpectrogramOfIndex(key);
int width = 70;
int height = image.Height;
var label = new Image <Rgb24>(width, height);
label.Mutate(g1 =>
{
g1.Clear(Color.Gray);
g1.DrawText(key, stringFont, Color.Black, new PointF(4, 30));
g1.DrawLine(new Pen(Color.Black, 1), 0, 0, width, 0); //draw upper boundary
g1.DrawLine(new Pen(Color.Black, 1), 0, 1, width, 1); //draw upper boundary
});
var imagearray = new[] { label, image };
var labelledImage = ImageTools.CombineImagesInLine(imagearray);
list.Add(labelledImage);
} //foreach key
var combinedImage = ImageTools.CombineImagesVertically(list);
return(combinedImage);
} // method DrawGrayScaleSpectrograms()
} // method DrawAggregatedSpectrograms()
public static Image DrawGrayScaleSpectrograms(Arguments arguments, string fileStem, TimeSpan dataScale, Dictionary <string, double[, ]> spectra = null)
{
int sampleRate = 22050;
int frameWidth = 512;
//double backgroundFilter = 0.0; // 0.0 means small values are removed.
double backgroundFilter = 0.75; // 0.75 means small values are accentuated.
string analysisType = AcousticIndices.TowseyAcoustic;
string[] keys = LDSpectrogramRGB.GetArrayOfAvailableKeys();
//LoggedConsole.WriteLine("# Spectrogram Config file: " + arguments.SpectrogramConfigPath);
//LoggedConsole.WriteLine("# Index Properties Config file: " + arguments.IndexPropertiesConfig);
var inputDirectory = arguments.InputDataDirectory;
Dictionary <string, IndexProperties> indexProperties = IndexProperties.GetIndexProperties(arguments.IndexPropertiesConfig.ToFileInfo());
if (spectra == null)
{
//C:\SensorNetworks\Output\BIRD50\Training\ID0001\Towsey.Acoustic\ID0001__Towsey.Acoustic.ACI
spectra = IndexMatrices.ReadSpectralIndices(inputDirectory.ToDirectoryInfo(), fileStem, analysisType, keys);
}
// note: the spectra are oriented as per visual orientation, i.e. xAxis = time frames
//int frameCount = spectra[keys[0]].GetLength(1);
var cs1 = new LDSpectrogramRGB(minuteOffset: TimeSpan.Zero, xScale: dataScale, sampleRate: sampleRate, frameWidth: frameWidth, colourMap: null)
{
FileName = fileStem,
BackgroundFilter = backgroundFilter,
IndexCalculationDuration = dataScale,
};
cs1.SetSpectralIndexProperties(indexProperties); // set the relevant dictionary of index properties
cs1.SpectrogramMatrices = spectra;
if (cs1.GetCountOfSpectrogramMatrices() == 0)
{
LoggedConsole.WriteLine("WARNING: " + fileStem + ": No spectrogram matrices in the dictionary. Spectrogram files do not exist?");
return(null);
}
List <Image> list = new List <Image>();
Font stringFont = new Font("Arial", 14);
foreach (string key in keys)
{
var image = cs1.DrawGreyscaleSpectrogramOfIndex(key);
int width = 70;
int height = image.Height;
var label = new Bitmap(width, height);
var g1 = Graphics.FromImage(label);
g1.Clear(Color.Gray);
g1.DrawString(key, stringFont, Brushes.Black, new PointF(4, 30));
g1.DrawLine(new Pen(Color.Black), 0, 0, width, 0); //draw upper boundary
g1.DrawLine(new Pen(Color.Black), 0, 1, width, 1); //draw upper boundary
Image[] imagearray = { label, image };
var labelledImage = ImageTools.CombineImagesInLine(imagearray);
list.Add(labelledImage);
} //foreach key
var combinedImage = ImageTools.CombineImagesVertically(list.ToArray());
return(combinedImage);
} // method DrawGrayScaleSpectrograms()