GrayscaleMode Property (original) (raw)
Summary
Determines if this RasterImage is a grayscale image.
Syntax
C#
Objective-C
C++/CLI
Java
Python
@property (nonatomic, assign, readonly) LTRasterGrayscaleMode grayscaleMode Property Value
A RasterGrayscaleMode enumeration member to determine if this RasterImage is a grayscale image.
Example
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("Grsyscale 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("Grsyscale 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("Grsyscale 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("Grsyscale 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:\LEADTOOLS22\Resources\Images";
}
Leadtools Assembly