Class ImageMasking
Class ImageMasking
Nazwa przestrzeń: Aspose.Imaging.Masking Zgromadzenie: Aspose.Imaging.dll (25.4.0)
Zapewnia operacje maskowania obrazu
public class ImageMaskingInheritance
Dziedziczeni członkowie
object.GetType() , object.MemberwiseClone() , object.ToString() , object.Equals(object?) , object.Equals(object?, object?) , object.ReferenceEquals(object?, object?) , object.GetHashCode()
Examples
Używanie maski segmentowej do przyspieszenia procesu segmentacji
// Masking export options
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// The backgroung color will be transparent.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Transparent;
maskingOptions.ExportOptions = exportOptions;
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Size imageSize = image.Size;
// Reducing image size to speed up the segmentation process
image.ResizeHeightProportionally(600, Aspose.Imaging.ResizeType.HighQualityResample);
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Getting the foreground mask
using (Aspose.Imaging.RasterImage foregroundMask = maskingResult[1].GetMask())
{
// Increase the size of the mask to the size of the original image
foregroundMask.Resize(imageSize.Width, imageSize.Height, Aspose.Imaging.ResizeType.NearestNeighbourResample);
// Applying the mask to the original image to obtain a foreground segment
using (Aspose.Imaging.RasterImage originImage = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Masking.ImageMasking.ApplyMask(originImage, foregroundMask, maskingOptions);
originImage.Save(dir + "BigImage_foreground.png", exportOptions);
}
}
}
}Oszczędzanie sesji masku do pliku na długie sesje, a także możliwość ponownego odtwarzania w innym środowisku.
string dir = "c:\\temp\\";
string sessionBackupFile = dir + "session.bak";
// Masking export options
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// Starting a session for the first time and saving to a file
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
using (Aspose.Imaging.Masking.IMaskingSession session = masking.CreateSession(maskingOptions))
{
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = session.Decompose())
{
using (Aspose.Imaging.RasterImage segmentImage = maskingResult[1].GetImage())
{
segmentImage.Save(dir + "step1.png");
}
}
session.Save(sessionBackupFile);
}
}
// Resuming a masking session from a file
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
using (Aspose.Imaging.Masking.IMaskingSession session = masking.LoadSession(sessionBackupFile))
{
Aspose.Imaging.Masking.Options.AutoMaskingArgs args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// Analyze the image visually and set the points that belong to separated objects.
args.ObjectsPoints = new Point[][]
{
new Point[]
{
new Point(0, 0), new Point(0, 1), new Point(1, 0),
new Point(1, 1), new Point(2, 0), new Point(2, 1),
new Point(3, 0), new Point(3, 1)
},
};
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = session.ImproveDecomposition(args))
{
// Explicit transfer of export options, since it is not serializable
maskingResult.MaskingOptions.ExportOptions = exportOptions;
using (Aspose.Imaging.RasterImage segmentImage = maskingResult[1].GetImage())
{
segmentImage.Save(dir + "step2.png");
}
}
}
}Constructors
ImageMasking(RasterImage)
Inicjalizuje nową instancję klasy Aspose.Imaging.Masking.ImageMasking.
public ImageMasking(RasterImage sourceImage)Parameters
sourceImage RasterImage
Zdjęcie źródłowe .
Examples
Ten przykład pokazuje, jak rozdzielić obraz rasterowy na kilka obrazów za pomocą maski obrazu i algorytmu segmentacji K-means.
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Blue hills.png"))
{
Aspose.Imaging.Masking.Options.AutoMaskingArgs args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// Set the number of clusters (separated objects). The default value is 2, the foreground object and the background.
args.NumberOfObjects = 3;
// Set the maximum number of iterations.
args.MaxIterationNumber = 50;
// Set the precision of segmentation method (optional)
args.Precision = 1;
// Each cluster (segment) will be stored to a separate PNG file.
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use K-means clustering.
// K-means clustering allows to split image into several independent clusters (segments).
maskingOptions.Method = Masking.Options.SegmentationMethod.KMeans;
maskingOptions.Decompose = true;
maskingOptions.Args = args;
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Obtain images from masking result and save them to PNG.
for (int i = 0; i < maskingResult.Length; i++)
{
string outputFileName = string.Format("Blue hills.Segment{0}.png", maskingResult[i].ObjectNumber);
using (Aspose.Imaging.Image resultImage = maskingResult[i].GetImage())
{
resultImage.Save(dir + outputFileName);
}
}
}
}Używanie maski segmentowej do przyspieszenia procesu segmentacji
// Masking export options
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// The backgroung color will be transparent.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Transparent;
maskingOptions.ExportOptions = exportOptions;
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Size imageSize = image.Size;
// Reducing image size to speed up the segmentation process
image.ResizeHeightProportionally(600, Aspose.Imaging.ResizeType.HighQualityResample);
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Getting the foreground mask
using (Aspose.Imaging.RasterImage foregroundMask = maskingResult[1].GetMask())
{
// Increase the size of the mask to the size of the original image
foregroundMask.Resize(imageSize.Width, imageSize.Height, Aspose.Imaging.ResizeType.NearestNeighbourResample);
// Applying the mask to the original image to obtain a foreground segment
using (Aspose.Imaging.RasterImage originImage = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Masking.ImageMasking.ApplyMask(originImage, foregroundMask, maskingOptions);
originImage.Save(dir + "BigImage_foreground.png", exportOptions);
}
}
}
}Ten przykład pokazuje, jak rozdzielić obraz rasterowy na kilka obrazów za pomocą maski obrazu i ręcznie. maska obraza jest techniką przetwarzania obrazy, która jest używana do podziału tła z przedmiotów obrazowych z przodu.
string dir = "c:\\temp\\";
// Define a manual mask.
Aspose.Imaging.GraphicsPath manualMask = new Aspose.Imaging.GraphicsPath();
Aspose.Imaging.Figure figure = new Aspose.Imaging.Figure();
figure.AddShape(new Aspose.Imaging.Shapes.EllipseShape(new RectangleF(50, 50, 40, 40)));
figure.AddShape(new Aspose.Imaging.Shapes.RectangleShape(new RectangleF(10, 20, 50, 30)));
manualMask.AddFigure(figure);
// Each cluster (segment) will be stored to a separate PNG file.
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
// Set the manual mask.
Aspose.Imaging.Masking.Options.ManualMaskingArgs args = new Aspose.Imaging.Masking.Options.ManualMaskingArgs();
args.Mask = manualMask;
using (RasterImage image = (RasterImage)Image.Load(dir + "Blue hills.png"))
{
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use manual clustering algorithm.
maskingOptions.Method = Masking.Options.SegmentationMethod.Manual;
// All shapes making up a mask will be combined into one.
maskingOptions.Decompose = false;
maskingOptions.Args = args;
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// The area of the source image that masking will be applied to.
maskingOptions.MaskingArea = new Rectangle(50, 50, 120, 120);
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Obtain images from masking result and save them to PNG.
for (int i = 0; i < maskingResult.Length; i++)
{
string outputFileName = string.Format("Blue hills.Segment{0}.png", maskingResult[i].ObjectNumber);
using (Aspose.Imaging.Image resultImage = maskingResult[i].GetImage())
{
resultImage.Save(dir + outputFileName);
}
}
}
}Ten przykład pokazuje, jak określić sugestie dla algorytmu ukrywania obrazu w celu poprawy precyzji metody segmentacji (klastrowania).
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
Aspose.Imaging.Masking.Options.AutoMaskingArgs args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// Suggestion #1.
// Analyze the image visually and set the area of interest. The result of segmentation will include only objects that will be completely located within this area.
args.ObjectsRectangles = new Rectangle[]
{
new Rectangle(86, 6, 270, 364),
};
// Suggestion #2.
// Analyze the image visually and set the points that belong to separated objects.
args.ObjectsPoints = new Point[][]
{
new Point[] { new Point(103, 326) },
new Point[] { new Point(280, 43) },
new Point[] { new Point(319, 86) },
};
// Each cluster (segment) will be stored to a separate PNG file.
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = args;
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Obtain images from masking result and save them to PNG.
for (int i = 0; i < maskingResult.Length; i++)
{
string outputFileName = string.Format("Gorilla.Segment{0}.png", maskingResult[i].ObjectNumber);
using (Aspose.Imaging.Image resultImage = maskingResult[i].GetImage())
{
resultImage.Save(dir + outputFileName);
}
}
}
}Oszczędzanie sesji masku do pliku na długie sesje, a także możliwość ponownego odtwarzania w innym środowisku.
string dir = "c:\\temp\\";
string sessionBackupFile = dir + "session.bak";
// Masking export options
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// Starting a session for the first time and saving to a file
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
using (Aspose.Imaging.Masking.IMaskingSession session = masking.CreateSession(maskingOptions))
{
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = session.Decompose())
{
using (Aspose.Imaging.RasterImage segmentImage = maskingResult[1].GetImage())
{
segmentImage.Save(dir + "step1.png");
}
}
session.Save(sessionBackupFile);
}
}
// Resuming a masking session from a file
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
using (Aspose.Imaging.Masking.IMaskingSession session = masking.LoadSession(sessionBackupFile))
{
Aspose.Imaging.Masking.Options.AutoMaskingArgs args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// Analyze the image visually and set the points that belong to separated objects.
args.ObjectsPoints = new Point[][]
{
new Point[]
{
new Point(0, 0), new Point(0, 1), new Point(1, 0),
new Point(1, 1), new Point(2, 0), new Point(2, 1),
new Point(3, 0), new Point(3, 1)
},
};
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = session.ImproveDecomposition(args))
{
// Explicit transfer of export options, since it is not serializable
maskingResult.MaskingOptions.ExportOptions = exportOptions;
using (Aspose.Imaging.RasterImage segmentImage = maskingResult[1].GetImage())
{
segmentImage.Save(dir + "step2.png");
}
}
}
}Exceptions
Zdjęcie źródłowe jest zero.
Methods
ApplyMask(Opcje RasterImage, MaskingOptions)
Zastosuj maskę do określonego obrazu źródłowego.
public static void ApplyMask(RasterImage targetImage, RasterImage mask, MaskingOptions maskingOptions)Parameters
targetImage RasterImage
Zdjęcie docelowe
mask RasterImage
Maska obrazu do zastosowania.
maskingOptions MaskingOptions
Opcje maski.
Examples
Używanie maski segmentowej do przyspieszenia procesu segmentacji
// Masking export options
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// The backgroung color will be transparent.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Transparent;
maskingOptions.ExportOptions = exportOptions;
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Size imageSize = image.Size;
// Reducing image size to speed up the segmentation process
image.ResizeHeightProportionally(600, Aspose.Imaging.ResizeType.HighQualityResample);
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Getting the foreground mask
using (Aspose.Imaging.RasterImage foregroundMask = maskingResult[1].GetMask())
{
// Increase the size of the mask to the size of the original image
foregroundMask.Resize(imageSize.Width, imageSize.Height, Aspose.Imaging.ResizeType.NearestNeighbourResample);
// Applying the mask to the original image to obtain a foreground segment
using (Aspose.Imaging.RasterImage originImage = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Masking.ImageMasking.ApplyMask(originImage, foregroundMask, maskingOptions);
originImage.Save(dir + "BigImage_foreground.png", exportOptions);
}
}
}
}CreateSession(MaskingOptions)
Tworzy sesję maskującą, która może wykonywać operacje retraining decompose.
public IMaskingSession CreateSession(MaskingOptions options)Parameters
options MaskingOptions
i opcji .
Returns
sesja maskująca, która może wykonywać operacje odtwarzania rozkładu.
Examples
Oszczędzanie sesji masku do pliku na długie sesje, a także możliwość ponownego odtwarzania w innym środowisku.
string dir = "c:\\temp\\";
string sessionBackupFile = dir + "session.bak";
// Masking export options
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// Starting a session for the first time and saving to a file
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
using (Aspose.Imaging.Masking.IMaskingSession session = masking.CreateSession(maskingOptions))
{
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = session.Decompose())
{
using (Aspose.Imaging.RasterImage segmentImage = maskingResult[1].GetImage())
{
segmentImage.Save(dir + "step1.png");
}
}
session.Save(sessionBackupFile);
}
}
// Resuming a masking session from a file
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
using (Aspose.Imaging.Masking.IMaskingSession session = masking.LoadSession(sessionBackupFile))
{
Aspose.Imaging.Masking.Options.AutoMaskingArgs args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// Analyze the image visually and set the points that belong to separated objects.
args.ObjectsPoints = new Point[][]
{
new Point[]
{
new Point(0, 0), new Point(0, 1), new Point(1, 0),
new Point(1, 1), new Point(2, 0), new Point(2, 1),
new Point(3, 0), new Point(3, 1)
},
};
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = session.ImproveDecomposition(args))
{
// Explicit transfer of export options, since it is not serializable
maskingResult.MaskingOptions.ExportOptions = exportOptions;
using (Aspose.Imaging.RasterImage segmentImage = maskingResult[1].GetImage())
{
segmentImage.Save(dir + "step2.png");
}
}
}
}Decompose(MaskingOptions)
Wykonuje operację rozkładu za pomocą określonych opcji masku
public MaskingResult Decompose(MaskingOptions options)Parameters
options MaskingOptions
Opcje maski.
Returns
Wynik operacji maskowania jako szereg dostawców obrazów segmentowych.
Examples
Ten przykład pokazuje, jak rozdzielić obraz rasterowy na kilka obrazów za pomocą maski obrazu i algorytmu segmentacji K-means.
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Blue hills.png"))
{
Aspose.Imaging.Masking.Options.AutoMaskingArgs args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// Set the number of clusters (separated objects). The default value is 2, the foreground object and the background.
args.NumberOfObjects = 3;
// Set the maximum number of iterations.
args.MaxIterationNumber = 50;
// Set the precision of segmentation method (optional)
args.Precision = 1;
// Each cluster (segment) will be stored to a separate PNG file.
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use K-means clustering.
// K-means clustering allows to split image into several independent clusters (segments).
maskingOptions.Method = Masking.Options.SegmentationMethod.KMeans;
maskingOptions.Decompose = true;
maskingOptions.Args = args;
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Obtain images from masking result and save them to PNG.
for (int i = 0; i < maskingResult.Length; i++)
{
string outputFileName = string.Format("Blue hills.Segment{0}.png", maskingResult[i].ObjectNumber);
using (Aspose.Imaging.Image resultImage = maskingResult[i].GetImage())
{
resultImage.Save(dir + outputFileName);
}
}
}
}Używanie maski segmentowej do przyspieszenia procesu segmentacji
// Masking export options
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// The backgroung color will be transparent.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Transparent;
maskingOptions.ExportOptions = exportOptions;
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Size imageSize = image.Size;
// Reducing image size to speed up the segmentation process
image.ResizeHeightProportionally(600, Aspose.Imaging.ResizeType.HighQualityResample);
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Getting the foreground mask
using (Aspose.Imaging.RasterImage foregroundMask = maskingResult[1].GetMask())
{
// Increase the size of the mask to the size of the original image
foregroundMask.Resize(imageSize.Width, imageSize.Height, Aspose.Imaging.ResizeType.NearestNeighbourResample);
// Applying the mask to the original image to obtain a foreground segment
using (Aspose.Imaging.RasterImage originImage = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "BigImage.jpg"))
{
Aspose.Imaging.Masking.ImageMasking.ApplyMask(originImage, foregroundMask, maskingOptions);
originImage.Save(dir + "BigImage_foreground.png", exportOptions);
}
}
}
}Ten przykład pokazuje, jak rozdzielić obraz rasterowy na kilka obrazów za pomocą maski obrazu i ręcznie. maska obraza jest techniką przetwarzania obrazy, która jest używana do podziału tła z przedmiotów obrazowych z przodu.
string dir = "c:\\temp\\";
// Define a manual mask.
Aspose.Imaging.GraphicsPath manualMask = new Aspose.Imaging.GraphicsPath();
Aspose.Imaging.Figure figure = new Aspose.Imaging.Figure();
figure.AddShape(new Aspose.Imaging.Shapes.EllipseShape(new RectangleF(50, 50, 40, 40)));
figure.AddShape(new Aspose.Imaging.Shapes.RectangleShape(new RectangleF(10, 20, 50, 30)));
manualMask.AddFigure(figure);
// Each cluster (segment) will be stored to a separate PNG file.
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
// Set the manual mask.
Aspose.Imaging.Masking.Options.ManualMaskingArgs args = new Aspose.Imaging.Masking.Options.ManualMaskingArgs();
args.Mask = manualMask;
using (RasterImage image = (RasterImage)Image.Load(dir + "Blue hills.png"))
{
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use manual clustering algorithm.
maskingOptions.Method = Masking.Options.SegmentationMethod.Manual;
// All shapes making up a mask will be combined into one.
maskingOptions.Decompose = false;
maskingOptions.Args = args;
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// The area of the source image that masking will be applied to.
maskingOptions.MaskingArea = new Rectangle(50, 50, 120, 120);
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Obtain images from masking result and save them to PNG.
for (int i = 0; i < maskingResult.Length; i++)
{
string outputFileName = string.Format("Blue hills.Segment{0}.png", maskingResult[i].ObjectNumber);
using (Aspose.Imaging.Image resultImage = maskingResult[i].GetImage())
{
resultImage.Save(dir + outputFileName);
}
}
}
}Ten przykład pokazuje, jak określić sugestie dla algorytmu ukrywania obrazu w celu poprawy precyzji metody segmentacji (klastrowania).
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
Aspose.Imaging.Masking.Options.AutoMaskingArgs args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// Suggestion #1.
// Analyze the image visually and set the area of interest. The result of segmentation will include only objects that will be completely located within this area.
args.ObjectsRectangles = new Rectangle[]
{
new Rectangle(86, 6, 270, 364),
};
// Suggestion #2.
// Analyze the image visually and set the points that belong to separated objects.
args.ObjectsPoints = new Point[][]
{
new Point[] { new Point(103, 326) },
new Point[] { new Point(280, 43) },
new Point[] { new Point(319, 86) },
};
// Each cluster (segment) will be stored to a separate PNG file.
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = args;
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
// Divide the source image into several clusters (segments).
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = masking.Decompose(maskingOptions))
{
// Obtain images from masking result and save them to PNG.
for (int i = 0; i < maskingResult.Length; i++)
{
string outputFileName = string.Format("Gorilla.Segment{0}.png", maskingResult[i].ObjectNumber);
using (Aspose.Imaging.Image resultImage = maskingResult[i].GetImage())
{
resultImage.Save(dir + outputFileName);
}
}
}
}DecomposeAsync(MaskingOptions)
Tworzenie asynchronicznego zadania rozkładu za pomocą określonych opcji masku.
public IMaskingAsyncTask DecomposeAsync(MaskingOptions options)Parameters
options MaskingOptions
Opcje maski.
Returns
Zadanie asynchronicznego rozkładu
LoadSession(Stream)
Pobierz sesję z określonego strumienia.
public IMaskingSession LoadSession(Stream stream)Parameters
stream Stream
w strumieniu .
Returns
sesja maskująca, która może wykonywać operacje odtwarzania rozkładu.
LoadSession(strumień)
Pobierz sesję z wyznaczonego pliku.
public IMaskingSession LoadSession(string filePath)Parameters
filePath string
Droga do pliku.
Returns
sesja maskująca, która może wykonywać operacje odtwarzania rozkładu.
Examples
Oszczędzanie sesji masku do pliku na długie sesje, a także możliwość ponownego odtwarzania w innym środowisku.
string dir = "c:\\temp\\";
string sessionBackupFile = dir + "session.bak";
// Masking export options
Aspose.Imaging.ImageOptions.PngOptions exportOptions = new Aspose.Imaging.ImageOptions.PngOptions();
exportOptions.ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;
exportOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream());
Aspose.Imaging.Masking.Options.MaskingOptions maskingOptions = new Aspose.Imaging.Masking.Options.MaskingOptions();
// Use GraphCut clustering.
maskingOptions.Method = Masking.Options.SegmentationMethod.GraphCut;
maskingOptions.Decompose = false;
maskingOptions.Args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// The backgroung color will be orange.
maskingOptions.BackgroundReplacementColor = Aspose.Imaging.Color.Orange;
maskingOptions.ExportOptions = exportOptions;
// Starting a session for the first time and saving to a file
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
using (Aspose.Imaging.Masking.IMaskingSession session = masking.CreateSession(maskingOptions))
{
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = session.Decompose())
{
using (Aspose.Imaging.RasterImage segmentImage = maskingResult[1].GetImage())
{
segmentImage.Save(dir + "step1.png");
}
}
session.Save(sessionBackupFile);
}
}
// Resuming a masking session from a file
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Load(dir + "Gorilla.bmp"))
{
// Create an instance of the ImageMasking class.
Aspose.Imaging.Masking.ImageMasking masking = new Aspose.Imaging.Masking.ImageMasking(image);
using (Aspose.Imaging.Masking.IMaskingSession session = masking.LoadSession(sessionBackupFile))
{
Aspose.Imaging.Masking.Options.AutoMaskingArgs args = new Aspose.Imaging.Masking.Options.AutoMaskingArgs();
// Analyze the image visually and set the points that belong to separated objects.
args.ObjectsPoints = new Point[][]
{
new Point[]
{
new Point(0, 0), new Point(0, 1), new Point(1, 0),
new Point(1, 1), new Point(2, 0), new Point(2, 1),
new Point(3, 0), new Point(3, 1)
},
};
using (Aspose.Imaging.Masking.Result.MaskingResult maskingResult = session.ImproveDecomposition(args))
{
// Explicit transfer of export options, since it is not serializable
maskingResult.MaskingOptions.ExportOptions = exportOptions;
using (Aspose.Imaging.RasterImage segmentImage = maskingResult[1].GetImage())
{
segmentImage.Save(dir + "step2.png");
}
}
}
}