Class Jpeg2000Options
Namn på plats: Aspose.Imaging.ImageOptions Församling: Aspose.Imaging.dll (25.4.0)
Skapa JPEG2000 (JP2) bildfiler med vår API, med hjälp av avancerad waveletteknikför kodning av förlustfria innehåll. Fördelar med stöd för olika codecs, inklusiveirreversibel och förlustlös kompression samt XMP-metadatabehållare, som säkerställermångsidighet och högkvalitativ bildskapande anpassad till dina behov.
public class Jpeg2000Options : ImageOptionsBase, IDisposable, IHasXmpData, IHasMetadata, ICloneableInheritance
object ← DisposableObject ← ImageOptionsBase ← Jpeg2000Options
Implements
IDisposable , IHasXmpData , IHasMetadata , ICloneable
Arvsmedlemmar
ImageOptionsBase.Clone() , ImageOptionsBase.ReleaseManagedResources() , ImageOptionsBase.KeepMetadata , ImageOptionsBase.XmpData , ImageOptionsBase.Source , ImageOptionsBase.Palette , ImageOptionsBase.ResolutionSettings , ImageOptionsBase.VectorRasterizationOptions , ImageOptionsBase.BufferSizeHint , ImageOptionsBase.MultiPageOptions , ImageOptionsBase.FullFrame , ImageOptionsBase.ProgressEventHandler , DisposableObject.Dispose() , DisposableObject.ReleaseManagedResources() , DisposableObject.ReleaseUnmanagedResources() , DisposableObject.VerifyNotDisposed() , DisposableObject.Disposed , object.GetType() , object.MemberwiseClone() , object.ToString() , object.Equals(object?) , object.Equals(object?, object?) , object.ReferenceEquals(object?, object?) , object.GetHashCode()
Examples
Följande exempel visar hur man konverterar en flersidig vektorbild till JPEG 2000 format i allmänhet utan att hänvisa till en viss bildtyp.
string dir = "C:\\aspose.imaging\\net\\misc\\ImagingReleaseQATester\\Tests\\testdata\\2548";
string inputFilePath = System.IO.Path.Combine(dir, "Multipage.cdr");
string outputFilePath = System.IO.Path.Combine(dir, "Multipage.cdr.j2k");
Aspose.Imaging.ImageOptionsBase exportOptions = new Aspose.Imaging.ImageOptions.Jpeg2000Options();
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(inputFilePath))
{
exportOptions.MultiPageOptions = null;
// Export only first two pages. In fact, only one page will be rasterized because JPEG 2000 is not a multi-page format.
Aspose.Imaging.IMultipageImage multipageImage = image as Aspose.Imaging.IMultipageImage;
if (multipageImage != null && (multipageImage.Pages != null && multipageImage.PageCount > 2))
{
exportOptions.MultiPageOptions = new Aspose.Imaging.ImageOptions.MultiPageOptions(new Aspose.Imaging.IntRange(0, 2));
}
if (image is Aspose.Imaging.VectorImage)
{
exportOptions.VectorRasterizationOptions = (Aspose.Imaging.ImageOptions.VectorRasterizationOptions)image.GetDefaultOptions(new object[] { Aspose.Imaging.Color.White, image.Width, image.Height });
exportOptions.VectorRasterizationOptions.TextRenderingHint = Aspose.Imaging.TextRenderingHint.SingleBitPerPixel;
exportOptions.VectorRasterizationOptions.SmoothingMode = Aspose.Imaging.SmoothingMode.None;
}
image.Save(outputFilePath, exportOptions);
}Constructors
Jpeg2000Options()
Initialiserar en ny instans av Aspose.Imaging.ImageOptions.Jpeg2000Options klass.
public Jpeg2000Options()Jpeg2000Options(Jpeg2000Options)
Initialiserar en ny instans av Aspose.Imaging.ImageOptions.Jpeg2000Options klass.
public Jpeg2000Options(Jpeg2000Options jpeg2000Options)Parameters
jpeg2000Options Jpeg2000Options
Jpeg2000 filformat alternativ för att kopiera inställningar från.
Properties
Codec
Få eller ställa in JPEG2000 codec
public Jpeg2000Codec Codec { get; set; }Fastighetsvärde
Examples
Detta exempel visar hur man skapar en PNG-bild och sparar den till JPEG2000 med de önskade alternativen.
string dir = "c:\\temp\\";
// Create a PNG image of 100x100 px.
using (Aspose.Imaging.FileFormats.Png.PngImage pngImage = new Aspose.Imaging.FileFormats.Png.PngImage(100, 100))
{
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(pngImage);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
graphics.FillRectangle(brush, pngImage.Bounds);
Aspose.Imaging.ImageOptions.Jpeg2000Options saveOptions = new Aspose.Imaging.ImageOptions.Jpeg2000Options();
// Use the irreversible Discrete Wavelet Transform 9-7
saveOptions.Irreversible = true;
// JP2 is the "container" format for JPEG 2000 codestreams.
// J2K is raw compressed data, without a wrapper.
saveOptions.Codec = Imaging.FileFormats.Jpeg2000.Jpeg2000Codec.J2K;
// Save to a file
pngImage.Save(dir + "output.j2k", saveOptions);
}Det här exemplet visar hur du skapar en JPEG2000-bild med önskade alternativ och sparar den i en fil.
string dir = "c:\\temp\\";
Aspose.Imaging.ImageOptions.Jpeg2000Options createOptions = new Aspose.Imaging.ImageOptions.Jpeg2000Options();
// Use the irreversible Discrete Wavelet Transform 9-7
createOptions.Irreversible = true;
// JP2 is the "container" format for JPEG 2000 codestreams.
// J2K is raw compressed data, without a wrapper.
createOptions.Codec = Imaging.FileFormats.Jpeg2000.Jpeg2000Codec.J2K;
// Create a JPEG2000 image of 100x100 px.
using (Aspose.Imaging.FileFormats.Jpeg2000.Jpeg2000Image jpeg2000Image = new Aspose.Imaging.FileFormats.Jpeg2000.Jpeg2000Image(100, 100, createOptions))
{
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(jpeg2000Image);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
graphics.FillRectangle(brush, jpeg2000Image.Bounds);
// Save to a file
jpeg2000Image.Save(dir + "sample.output.j2k");
}Comments
Få eller ställa in Jpeg-kommentarmarkörer.
public string[] Comments { get; set; }Fastighetsvärde
string [ ]
CompressionRatios
Få eller ställa in komprimeringsförhållandet.Olika komprimeringsförhållanden för successiva lager.Den ränta som anges för varje kvalitetsnivå är önskadKomprimering av faktorn.minskning av nödvändiga proportioner.
public int[] CompressionRatios { get; set; }Fastighetsvärde
int [ ]
Irreversible
Få eller ange ett värde som anger om du använder den irreversibla DWT 9-7 (true) eller använder en förlustlös DWT 5-3 kompression (default).
public bool Irreversible { get; set; }Fastighetsvärde
Examples
Detta exempel visar hur man skapar en PNG-bild och sparar den till JPEG2000 med de önskade alternativen.
string dir = "c:\\temp\\";
// Create a PNG image of 100x100 px.
using (Aspose.Imaging.FileFormats.Png.PngImage pngImage = new Aspose.Imaging.FileFormats.Png.PngImage(100, 100))
{
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(pngImage);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
graphics.FillRectangle(brush, pngImage.Bounds);
Aspose.Imaging.ImageOptions.Jpeg2000Options saveOptions = new Aspose.Imaging.ImageOptions.Jpeg2000Options();
// Use the irreversible Discrete Wavelet Transform 9-7
saveOptions.Irreversible = true;
// JP2 is the "container" format for JPEG 2000 codestreams.
// J2K is raw compressed data, without a wrapper.
saveOptions.Codec = Imaging.FileFormats.Jpeg2000.Jpeg2000Codec.J2K;
// Save to a file
pngImage.Save(dir + "output.j2k", saveOptions);
}Det här exemplet visar hur du skapar en JPEG2000-bild med önskade alternativ och sparar den i en fil.
string dir = "c:\\temp\\";
Aspose.Imaging.ImageOptions.Jpeg2000Options createOptions = new Aspose.Imaging.ImageOptions.Jpeg2000Options();
// Use the irreversible Discrete Wavelet Transform 9-7
createOptions.Irreversible = true;
// JP2 is the "container" format for JPEG 2000 codestreams.
// J2K is raw compressed data, without a wrapper.
createOptions.Codec = Imaging.FileFormats.Jpeg2000.Jpeg2000Codec.J2K;
// Create a JPEG2000 image of 100x100 px.
using (Aspose.Imaging.FileFormats.Jpeg2000.Jpeg2000Image jpeg2000Image = new Aspose.Imaging.FileFormats.Jpeg2000.Jpeg2000Image(100, 100, createOptions))
{
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(jpeg2000Image);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
graphics.FillRectangle(brush, jpeg2000Image.Bounds);
// Save to a file
jpeg2000Image.Save(dir + "sample.output.j2k");
}