IsSigned Property

Summary

Determines whether the image data is signed integer.

Syntax

Objective-C

C++/CLI

Java

Python

public bool IsSigned { get; }

@property (nonatomic, assign, readonly) BOOL isSigned;

public boolean isSigned()

public: 
property bool IsSigned { 
   bool get(); 
}

IsSigned # get  (CodecsImageInfo)

Property Value

true if the image data contains signed (negative) integer values; false, otherwise. The default value is false.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
 
 
public void CodecsImageInfoExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   // Parse the colorspace types 
   CodecsColorSpaceType[] colorSpaceTypes = (CodecsColorSpaceType[])Enum.GetValues(typeof(CodecsColorSpaceType)); 
   foreach (var colorSpaceType in colorSpaceTypes) 
   { 
      Debug.WriteLine($"Colorspace of image data: {colorSpaceType}"); 
   } 
 
   // try a GIF - CodecsGifImageInfo reference 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Eye_SavePage.gif"); 
   CodecsImageInfo info = codecs.GetInformation(srcFileName, true); 
   info.GetPalette(); 
   Debug.WriteLine("Information for: {0}", srcFileName); 
   Debug.WriteLine(string.Format("BitsPerPixel: {0}", info.BitsPerPixel)); 
   Debug.WriteLine(string.Format("BytesPerLine: {0}", info.BytesPerLine)); 
   Debug.WriteLine(string.Format("ColorSpace: {0}", info.ColorSpace.ToString())); 
   Debug.WriteLine(string.Format("Compression: {0}", info.Compression)); 
   Debug.WriteLine(string.Format("Fax: {0}", info.Fax)); 
   Debug.WriteLine(string.Format("Format: {0}", info.Format)); 
   if (info.Gif.HasAnimationBackground) 
      Debug.WriteLine(string.Format("Gif.AnimationBackground: {0}", info.Gif.AnimationBackground.ToString())); 
   Debug.WriteLine(string.Format("Gif.AnimationHeight: {0}", info.Gif.AnimationHeight)); 
   Debug.WriteLine(string.Format("Gif.AnimationWidth: {0}", info.Gif.AnimationWidth)); 
   if (info.Gif.HasAnimationLoop) 
      Debug.WriteLine(string.Format("Gif.AnimationLoop: {0}", info.Gif.AnimationLoop.ToString())); 
   if (info.Gif.HasAnimationPalette) 
   { 
      RasterColor[] pal = info.Gif.GetAnimationPalette(); 
      Debug.WriteLine("GifAnimationPalette:\n"); 
      for (int x = 0; x < pal.Length; x++) 
      { 
         Console.Write("{0},", pal[x]); 
      } 
      Debug.WriteLine("\n"); 
   } 
   Debug.WriteLine(string.Format("Gif.IsInterlaced: {0}", info.Gif.IsInterlaced.ToString())); 
   Debug.WriteLine(string.Format("PageNumber: {0}", info.PageNumber)); 
   Debug.WriteLine(string.Format("TotalPages: {0}", info.TotalPages)); 
 
   // try a FAX TIFF - CodecsFaxImageInfo reference 
   srcFileName = Path.Combine(LEAD_VARS.ImagesDir, @"Forms\Forms to be Recognized\Invoice", "invoice.tif"); 
   info = codecs.GetInformation(srcFileName, true); 
   info.GetPalette(); 
   Debug.WriteLine("Information for: {0}", srcFileName); 
   Debug.WriteLine(string.Format("Width: {0}", info.Width)); 
   Debug.WriteLine(string.Format("Height: {0}", info.Height)); 
   Debug.WriteLine(string.Format("IsLink: {0}", info.IsLink.ToString())); 
   Debug.WriteLine(string.Format("IsRotated: {0}", info.IsRotated.ToString())); 
   Debug.WriteLine(string.Format("Fax.IsCompressed: {0}", info.Fax.IsCompressed.ToString())); 
   if (info.HasResolution) 
   { 
      Debug.WriteLine(string.Format("X Resolution: {0}", info.XResolution)); 
      Debug.WriteLine(string.Format("Y Resolution: {0}", info.YResolution)); 
   } 
   // CodecsTiffImageInfo 
   Debug.WriteLine(string.Format("Tiff.HasNoPalette: {0}", info.Tiff.HasNoPalette.ToString())); 
   Debug.WriteLine(string.Format("Tiff.ImageFileDirectoryOffset: {0}", info.Tiff.ImageFileDirectoryOffset.ToString())); 
   Debug.WriteLine(string.Format("Tiff.IsImageFileDirectoryOffsetValid: {0}", info.Tiff.IsImageFileDirectoryOffsetValid.ToString())); 
   Debug.WriteLine(string.Format("Tiff.IsBigTiff: {0}", info.Tiff.IsBigTiff.ToString())); 
 
   // try a PNG 
   srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "quality.png"); 
   info = codecs.GetInformation(srcFileName, true); 
   info.GetPalette(); 
   Debug.WriteLine("Information for: {0}", srcFileName); 
   Debug.WriteLine(string.Format("HasAlpha: {0}", info.HasAlpha.ToString())); 
   Debug.WriteLine(string.Format("HasStamp: {0}", info.HasStamp.ToString())); 
 
   // try a DICOM 
   srcFileName = Path.Combine(LEAD_VARS.ImagesDir, @"DICOM", "Image1.dcm"); 
   info = codecs.GetInformation(srcFileName, true); 
   info.GetPalette(); 
   Debug.WriteLine("Information for: {0}", srcFileName); 
   Debug.WriteLine(string.Format("IsSigned: {0}", info.IsSigned.ToString())); 
 
   // try a JPEG 
   srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "cannon.jpg"); 
   info = codecs.GetInformation(srcFileName, true); 
   info.GetPalette(); 
   Debug.WriteLine("Information for: {0}", srcFileName); 
   Debug.WriteLine(string.Format("Name: {0}", info.Name)); 
   Debug.WriteLine(string.Format("Jpeg.HasStamp: {0}", info.Jpeg.HasStamp.ToString())); // CodecsJpegImageInfo reference 
   Debug.WriteLine(string.Format("Jpeg.IsLossless: {0}", info.Jpeg.IsLossless.ToString())); 
   Debug.WriteLine(string.Format("Jpeg.IsProgressive: {0}", info.Jpeg.IsProgressive.ToString())); 
   Debug.WriteLine(string.Format("Order: {0}", info.Order.ToString())); 
   Debug.WriteLine(string.Format("SizeDisk: {0}", info.SizeDisk)); 
   Debug.WriteLine(string.Format("SizeMemory: {0}", info.SizeMemory)); 
 
   // try a PSD 
   srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.psd"); 
   if (File.Exists(srcFileName)) 
   { 
      info = codecs.GetInformation(srcFileName, true); 
      info.GetPalette(); 
      Debug.WriteLine("Information for: {0}", srcFileName); 
      Debug.WriteLine(string.Format("Psd.Layers: {0}, channels: {1}", info.Psd.Layers, info.Psd.Channels)); // CodecsPsdImageInfo reference 
   } 
 
   // try a BMP 
   srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Ulay1.bmp"); 
   info = codecs.GetInformation(srcFileName, true); 
   info.GetPalette(); 
   Debug.WriteLine("Information for: {0}", srcFileName); 
   Debug.WriteLine(string.Format("ViewPerspective: {0}", info.ViewPerspective)); 
 
   // try an HEIC - CodecsHeicImageInfo reference 
   srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "clean.heic"); 
   info = codecs.GetInformation(srcFileName, true); 
   info.GetPalette(); 
   Debug.WriteLine("Information for: {0}", srcFileName); 
   Debug.WriteLine(string.Format("HasStamp: {0}", info.Heic.HasStamp)); 
 
   // try a PST 
   srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "DataFile.pst"); 
   info = codecs.GetInformation(srcFileName, true); 
   info.GetPalette(); 
   Debug.WriteLine("Information for: {0}", srcFileName); 
   Debug.WriteLine(string.Format("PST info: {0}, message count: {1}", info.Pst, info.Pst.MessageCount)); // CodecsPstImageInfo reference 
 
   // Finalize cannot be called directly, it is invoked automatically. 
   // To clean up before exiting, use Dispose 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
 
 
public void codecsImageInfoExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   RasterCodecs codecs = new RasterCodecs(); 
 
   // Try a GIF - CodecsGifImageInfo reference 
   String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "Eye.gif"); 
   CodecsImageInfo info = codecs.getInformation(srcFileName, true); 
   info.getPalette(); 
   System.out.println("Information for: " + srcFileName); 
   System.out.println(String.format("BitsPerPixel: %d", info.getBitsPerPixel())); 
   System.out.println(String.format("BytesPerLine: %d", info.getBytesPerLine())); 
   System.out.println(String.format("ColorSpace: %s", info.getColorSpace().toString())); 
   System.out.println(String.format("Compression: %s", info.getCompression())); 
   System.out.println(String.format("Fax: %s", info.getFax().toString())); 
   System.out.println(String.format("Format: %s", info.getFormat().toString())); 
 
   if (info.getGif().hasAnimationBackground())  
      System.out.println(String.format("getGif.getAnimationBackground: %s", info.getGif().getAnimationBackground().toString())); 
 
   System.out.println(String.format("getGif.getAnimationHeight: %d", info.getGif().getAnimationHeight())); 
   System.out.println(String.format("getGif.getAnimationWidth: %d", info.getGif().getAnimationWidth())); 
 
   if (info.getGif().hasAnimationLoop())  
      System.out.println(String.format("getGif.getAnimationLoop: %d", info.getGif().getAnimationLoop())); 
       
   if (info.getGif().hasAnimationPalette()) { 
      RasterColor[] pal = info.getGif().getAnimationPalette(); 
      System.out.println("GifAnnimationPalette:\n"); 
 
      for (int x = 0; x < pal.length; x++)  
         System.out.println(pal[x] + ","); 
      System.out.println(); 
   } 
 
   System.out.println("getGif.isInterlaced: " + info.getGif().isInterlaced()); 
   System.out.println(String.format("PageNumber: %d", info.getPageNumber())); 
   System.out.println(String.format("TotalPages: %d", info.getTotalPages())); 
 
   // Try a FAX TIFF - CodecsFaxImageInfo reference 
   srcFileName = combine(LEAD_VARS_IMAGES_DIR, "Forms\\Forms to be Recognized\\Invoice\\invoice.tif"); 
   info = codecs.getInformation(srcFileName, true); 
   info.getPalette(); 
   System.out.println("Information for: " + srcFileName); 
   System.out.println(String.format("Width: %d", info.getWidth())); 
   System.out.println(String.format("Height: %d", info.getHeight())); 
   System.out.println("isLink: " + info.isLink()); 
   System.out.println("isRotated: " + info.isRotated()); 
   System.out.println("getFax.isCompressed: " + info.getFax().isCompressed()); 
   if (info.hasResolution()) { 
      System.out.println(String.format("X Resolution: %d", info.getXResolution())); 
      System.out.println(String.format("Y Resolution: %d", info.getYResolution())); 
   } 
 
   // CodecsTiffImageInfo 
   System.out.println("getTiff().hasNoPalette(): " + info.getTiff().hasNoPalette()); 
   System.out.println( 
         String.format("getTiff.getImageFileDirectoryOffset: %d", info.getTiff().getImageFileDirectoryOffset())); 
   System.out 
         .println("getTiff.isImageFileDirectoryOffsetValid: " + info.getTiff().isImageFileDirectoryOffsetValid()); 
   System.out.println("getTiff.isBigTiff: " + info.getTiff().isBigTiff()); 
 
   // Try a PNG 
   srcFileName = combine(LEAD_VARS_IMAGES_DIR, "PngImage.png"); 
   info = codecs.getInformation(srcFileName, true); 
   info.getPalette(); 
   System.out.println("Information for: " + srcFileName); 
   System.out.println("hasAlpha: " + info.hasAlpha()); 
   System.out.println("hasStamp: " + info.hasStamp()); 
 
   // Try a DICOM 
   srcFileName = combine(LEAD_VARS_IMAGES_DIR, "DICOM\\image1.dcm"); 
   info = codecs.getInformation(srcFileName, true); 
   info.getPalette(); 
   System.out.println("Information for: " + srcFileName); 
   System.out.println("isSigned: " + info.isSigned()); 
 
   // Try a JPEG 
   srcFileName = combine(LEAD_VARS_IMAGES_DIR, "cannon.jpg"); 
   info.getPalette(); 
   System.out.println("Information for: " + srcFileName); 
   System.out.println(String.format("Name: %s", info.getName())); 
   System.out.println("getJpeg.hasStamp: " + info.getJpeg().hasStamp()); 
   System.out.println("getJpeg.isLossLess: " + info.getJpeg().isLossless()); 
   System.out.println("getJpeg.isProgressive: " + info.getJpeg().isProgressive()); 
   System.out.println(String.format("Order: %s", info.getOrder().toString())); 
   System.out.println(String.format("SizeDisk: %s", info.getSizeDisk())); 
   System.out.println(String.format("SizeMemory: %s", info.getSizeMemory())); 
 
   /* 
    * // Try a PSD 
    * srcFileName = combine(LEAD_VARS_IMAGES_DIR, "Image1.psd"); 
    * if (!srcFileName.isEmpty()) { 
    * info = codecs.getInformation(srcFileName, true); 
    * info.getPalette(); 
    * System.out.println("Information for: " + srcFileName); 
    * System.out.println(String.format("Psd.getLayers: %d, channels: %d", 
    * info.getPsd().getLayers(), info.getPsd().getChannels())); 
    * } 
    */ 
 
   // try a BMP 
   srcFileName = combine(LEAD_VARS_IMAGES_DIR, "Ulay1.bmp"); 
   info = codecs.getInformation(srcFileName, true); 
   info.getPalette(); 
   System.out.println("Information for: " + srcFileName); 
   System.out.println(String.format("getViewPerspective: %s", info.getViewPerspective().toString())); 
 
   /* 
    *  
    * // try an HEIC - CodecsHeicImageInfo reference 
    * srcFileName = combine(LEAD_VARS_IMAGES_DIR, "clean.heic"); 
    * info = codecs.getInformation(srcFileName, true); 
    * info.getPalette(); 
    * System.out.println("Information for: " + srcFileName); 
    * System.out.println("hasStamp: " + info.getHeic().hasStamp()); 
    *  
    *  
    *  
    * // try a PST 
    * srcFileName = combine(LEAD_VARS_IMAGES_DIR, "DataFile.pst"); 
    * info = codecs.getInformation(srcFileName, true); 
    * info.getPalette(); 
    * System.out.println("Information for: " + srcFileName); 
    * System.out.println(String.format("PST info: %s, message count: %d", 
    * info.getPst().toString(), info.getPst().getMessageCount())); 
    *  
    */ 
 
   // Finalize cannot be called directly, it is invoked automatically 
   codecs.dispose(); 
}

Requirements

Target Platforms