Class Jpeg2000Options
Il nome: Aspose.Imaging.ImageOptions Assemblea: Aspose.Imaging.dll (25.4.0)
Creare file di immagine JPEG2000 (JP2) con la nostra API, utilizzando la tecnologia avanzata di waveletper la codifica di contenuti senza perdite. vantaggio dal supporto per diversi codec, tra cuicompressione irreversibile e senza perdite, nonché contenitori di metadati XMP, garantendoVersatilità e creazione di immagini di alta qualità adatta alle vostre esigenze.
public class Jpeg2000Options : ImageOptionsBase, IDisposable, IHasXmpData, IHasMetadata, ICloneableInheritance
object ← DisposableObject ← ImageOptionsBase ← Jpeg2000Options
Implements
IDisposable , IHasXmpData , IHasMetadata , ICloneable
I membri ereditari
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
L’esempio seguente mostra come convertire un’immagine vector multipagine in formato JPEG 2000 in generale senza fare riferimento a un particolare tipo di immagine.
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()
Inizia una nuova instanza della classe Aspose.Imaging.ImageOptions.Jpeg2000Option.
public Jpeg2000Options()Jpeg2000Options(Jpeg2000Options)
Inizia una nuova instanza della classe Aspose.Imaging.ImageOptions.Jpeg2000Option.
public Jpeg2000Options(Jpeg2000Options jpeg2000Options)Parameters
jpeg2000Options Jpeg2000Options
Le opzioni di formato file Jpeg2000 per copiare le impostazioni da.
Properties
Codec
Ottieni o impostate il codec JPEG2000
public Jpeg2000Codec Codec { get; set; }Valore di proprietà
Examples
Questo esempio mostra come creare un’immagine PNG e salvarla a JPEG2000 con le opzioni desiderate.
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);
}Questo esempio mostra come creare un’immagine JPEG2000 con le opzioni desiderate e salverla in un file.
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
Riceve o impone i Jpeg comment markers.
public string[] Comments { get; set; }Valore di proprietà
string [ ]
CompressionRatios
Riceve o impone il rapporto di compressione.Rati di compressione diversi per strati successivi.Il tasso specificato per ogni livello di qualità è il livello desideratofattore di compressione.riduzione delle proporzioni richieste.
public int[] CompressionRatios { get; set; }Valore di proprietà
int [ ]
Irreversible
Riceve o impone un valore che indica se si utilizza il DWT 9-7 irreversibile (true) o si utilizza la compressione DWT 5-3 senza perdite (default).
public bool Irreversible { get; set; }Valore di proprietà
Examples
Questo esempio mostra come creare un’immagine PNG e salvarla a JPEG2000 con le opzioni desiderate.
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);
}Questo esempio mostra come creare un’immagine JPEG2000 con le opzioni desiderate e salverla in un file.
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");
}