public RasterGrayscaleMode GrayscaleMode { get; }
@property (nonatomic, assign, readonly) LTRasterGrayscaleMode grayscaleMode
public RasterGrayscaleMode getGrayscaleMode();
public:
property RasterGrayscaleMode GrayscaleMode {
RasterGrayscaleMode get();
}
GrayscaleMode # get (RasterImage)
A RasterGrayscaleMode enumeration member to determine if this RasterImage is a grayscale image.
Use this property to determine if the data inside this RasterImage object is grayscale before calling methods and properties that rely on grayscale data.
For more information, refer to Grayscale Images.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
public void GrayscaleCommandExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
string destFileName8 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_grayscale8.jpg");
string destFileName12 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_grayscale12.jpg");
string destFileName16 = Path.Combine(LEAD_VARS.ImagesDir, "Image1_grayscale16.jpg");
// Load the source image from disk as 24-bits/pixel
RasterImage image = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1);
// Check the grayscale mode
Console.WriteLine("Grayscale mode of original image = {0}", image.GrayscaleMode);
// Convert to 8-bit grayscale
GrayscaleCommand command = new GrayscaleCommand();
command.BitsPerPixel = 8;
command.Run(image);
// Check the grayscale mode
Console.WriteLine("Grayscale mode after grayscale command with 8 bpp = {0}", image.GrayscaleMode);
// Save it to disk
codecs.Options.Jpeg.Save.QualityFactor = 2;
codecs.Save(image, destFileName8, RasterImageFormat.Jpeg, 8);
image.Dispose();
// Load the image again this time grayscale to 12-bits/pixel
image = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1);
command.BitsPerPixel = 12;
command.Run(image);
Console.WriteLine("Grayscale mode after grayscale command with 12 bpp = {0}", image.GrayscaleMode);
codecs.Options.Jpeg.Save.QualityFactor = 2;
codecs.Save(image, destFileName12, RasterImageFormat.Jpeg, 12);
image.Dispose();
// Load the image again this time grayscale to 16-bits/pixel
image = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1);
command.BitsPerPixel = 16;
command.Run(image);
Console.WriteLine("Grayscale mode after grayscale command with 16 bpp = {0}", image.GrayscaleMode);
// When saving 16-bit jpegs, you must use lossless quality factor
codecs.Options.Jpeg.Save.QualityFactor = 0;
codecs.Save(image, destFileName16, RasterImageFormat.Jpeg, 16);
image.Dispose();
// Clean Up
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.*;
import leadtools.imageprocessing.*;
public void grayscaleCommandExample() {
final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images";
RasterCodecs codecs = new RasterCodecs();
String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "rgsref.cmp");
String destFileName8 = combine(LEAD_VARS_IMAGES_DIR, "rgsref_grayscale8.jpg");
String destFileName12 = combine(LEAD_VARS_IMAGES_DIR, "rgsref_grayscale12.jpg");
String destFileName16 = combine(LEAD_VARS_IMAGES_DIR, "rgsref_grayscale16.jpg");
// Load the source image from disk as 24-bits/pixel
RasterImage image = codecs.load(srcFileName, 24, CodecsLoadByteOrder.BGR, 1, 1);
// Check the grayscale mode
System.out.printf("Grsyscale mode of original image = %s%n", image.getGrayscaleMode());
// Convert to 8-bit grayscale
GrayscaleCommand command = new GrayscaleCommand();
command.setBitsPerPixel(8);
command.run(image);
// Check the grayscale mode
System.out.printf("Grsyscale mode after grayscale command with 8 bpp = %s%n", image.getGrayscaleMode());
// Save it to disk
codecs.getOptions().getJpeg().getSave().setQualityFactor(2);
codecs.save(image, destFileName8, RasterImageFormat.JPEG, 8);
image.dispose();
// Load the image again this time grayscale to 12-bits/pixel
image = codecs.load(srcFileName, 24, CodecsLoadByteOrder.BGR, 1, 1);
command.setBitsPerPixel(12);
command.run(image);
System.out.printf("Grsyscale mode after grayscale command with 12 bpp = %s%n", image.getGrayscaleMode());
codecs.getOptions().getJpeg().getSave().setQualityFactor(2);
codecs.save(image, destFileName12, RasterImageFormat.JPEG, 12);
image.dispose();
// Load the image again this time grayscale to 16-bits/pixel
image = codecs.load(srcFileName, 24, CodecsLoadByteOrder.BGR, 1, 1);
command.setBitsPerPixel(16);
command.run(image);
System.out.printf("Grsyscale mode after grayscale command with 16 bpp = %s%n", image.getGrayscaleMode());
// When saving 16-bit jpegs, you must use lossless quality factor
codecs.getOptions().getJpeg().getSave().setQualityFactor(0);
codecs.save(image, destFileName16, RasterImageFormat.JPEG, 16);
assertTrue("file unsuccessfully saved to " + destFileName16, (new File(destFileName16)).exists());
System.out.printf("File saved successfully to %s%n", destFileName16);
// Clean Up
image.dispose();
codecs.dispose();
}
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