CodecsJpeg2000CompressionControl Enumeration (original) (raw)
Summary
Indicates the compression control method.
Syntax
C#
Objective-C
C++/CLI
Java
Python
public enum CodecsJpeg2000CompressionControl typedef NS_ENUM(NSInteger, LTCodecsJpeg2000CompressionControl) {
LTCodecsJpeg2000CompressionControlLossless = 0,
LTCodecsJpeg2000CompressionControlRatio = 1,
LTCodecsJpeg2000CompressionControlTargetSize = 2,
LTCodecsJpeg2000CompressionControlQualityFactor = 3
};
public enum CodecsJpeg2000CompressionControl public enum class CodecsJpeg2000CompressionControl class CodecsJpeg2000CompressionControl(Enum):
Lossless = 0
Ratio = 1
TargetSize = 2
QualityFactor = 3
Members
| Value | Member | Description |
|---|---|---|
| 0 | Lossless | Lossless compression. |
| 1 | Ratio | Compress the file based on the value of the CompressionRatio. |
| 2 | TargetSize | Compress the file based on the value of the TargetFileSize. |
| 3 | QualityFactor | Compress the file based on the value of the QualityFactor. |
Example
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing.Core;
public void CodecsJpeg2000OptionsExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.j2k");
CodecsJpeg2000PrecinctSize[] precintSizes = (CodecsJpeg2000PrecinctSize[])Enum.GetValues(typeof(CodecsJpeg2000PrecinctSize));
foreach (var precinctSize in precintSizes)
{
Console.WriteLine($"PrecinctSize types: {precinctSize}");
}
//Setting the Jpeg2000 load options. CodecsJpeg2000Options & CodecsJpeg2000LoadOptions reference
codecs.Options.Jpeg2000.Load.J2kResolution = new LeadSize(800, 800);
codecs.Options.Jpeg2000.Load.Jp2Resolution = new LeadSize(800, 800);
codecs.Options.Jpeg2000.Load.CmwResolution = new LeadSize(0, 0);
//loading a Jpeg2000 image.
RasterImage srcImage = codecs.Load(srcFileName);
//Setting the Jpeg2000 save options. CodecsJpeg2000SaveOptions reference
codecs.Options.Jpeg2000.Save.AlphaChannelActiveBits = 16;
codecs.Options.Jpeg2000.Save.AlphaChannelLossless = false;
codecs.Options.Jpeg2000.Save.CompressionControl = CodecsJpeg2000CompressionControl.Ratio;
codecs.Options.Jpeg2000.Save.CompressionRatio = 15.0f;
codecs.Options.Jpeg2000.Save.DecompositionLevels = 5;
codecs.Options.Jpeg2000.Save.DerivedQuantization = true;
codecs.Options.Jpeg2000.Save.ImageAreaHorizontalOffset = 0;
codecs.Options.Jpeg2000.Save.ImageAreaVerticalOffset = 0;
codecs.Options.Jpeg2000.Save.ProgressingOrder = CodecsJpeg2000ProgressionsOrder.PositionComponentResolutionLayer;
codecs.Options.Jpeg2000.Save.PrecinctSize = CodecsJpeg2000PrecinctSize.HierarchicalOne64;
codecs.Options.Jpeg2000.Save.ReferenceTileHeight = 240;
codecs.Options.Jpeg2000.Save.ReferenceTileWidth = 480;
codecs.Options.Jpeg2000.Save.RegionOfInterest = CodecsJpeg2000RegionOfInterest.UseLeadRegion;
codecs.Options.Jpeg2000.Save.RegionOfInterestRectangle = new LeadRect(0, 0, 0, 0);
codecs.Options.Jpeg2000.Save.TargetFileSize = 10240;
codecs.Options.Jpeg2000.Save.TileHorizontalOffset = 0;
codecs.Options.Jpeg2000.Save.TileVerticalOffset = 0;
codecs.Options.Jpeg2000.Save.UseColorTransform = true;
codecs.Options.Jpeg2000.Save.UseEphMarker = false;
codecs.Options.Jpeg2000.Save.UseRegionOfInterest = false;
codecs.Options.Jpeg2000.Save.UseSopMarker = false;
//Save the first sample.
codecs.Save(srcImage, Path.Combine(LEAD_VARS.ImagesDir, "Image1_test.j2k"), RasterImageFormat.J2k, srcImage.BitsPerPixel);
codecs.Options.Jpeg2000.Save.Reset();
//changing some of the Jpeg2000 save options
codecs.Options.Jpeg2000.Save.CompressionRatio = 23.0f;
codecs.Options.Jpeg2000.Save.DecompositionLevels = 6;
codecs.Options.Jpeg2000.Save.ReferenceTileHeight = 320;
codecs.Options.Jpeg2000.Save.ReferenceTileWidth = 320;
codecs.Options.Jpeg2000.Save.UseEphMarker = true;
codecs.Options.Jpeg2000.Save.ProgressingOrder = CodecsJpeg2000ProgressionsOrder.ResolutionPositionComponentLayer;
codecs.Options.Jpeg2000.Save.UseSopMarker = true;
codecs.Options.Jpeg2000.Save.TargetFileSize = 102400;
var maximumComponentsNumber = CodecsJpeg2000SaveOptions.MaximumComponentsNumber;
var maximumDecompressionLevels = CodecsJpeg2000SaveOptions.MaximumDecompressionLevels;
Console.WriteLine("MaximumComponents: {0}, MaximumDecompressionLevels: {1}", maximumComponentsNumber, maximumDecompressionLevels);
//Save the first sample.
codecs.Save(srcImage, Path.Combine(LEAD_VARS.ImagesDir, "Image1_test.jp2"), RasterImageFormat.J2k, srcImage.BitsPerPixel);
// Clean up
srcImage.Dispose();
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools.Codecs Assembly
CompactFile(Stream,Stream,int,int,bool,int,int,bool,int,CodecsSavePageMode,bool,bool) Method
CompactFile(Stream,Stream,int,int,bool,long,int,bool,long,CodecsSavePageMode,bool,bool,bool) Method
CompactFile(string,string,int,int,bool,int,int,bool,int,CodecsSavePageMode,bool,bool) Method
CompactFile(string,string,int,int,bool,long,int,bool,long,CodecsSavePageMode,bool,bool,bool) Method