ClearNegativePixelsCommand Class (original) (raw)
Summary
Sets all pixels with negative color values to 0.
Syntax
C#
Objective-C
C++/CLI
Java
Python
@interface LTClearNegativePixelsCommand : LTRasterCommand public class ClearNegativePixelsCommand extends RasterCommand public ref class ClearNegativePixelsCommand : public RasterCommand class ClearNegativePixelsCommand(RasterCommand): Example
This example sets the Signed flag in the load options, loads a tif file and clears the negative pixels.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
public void ClearNegativePixelsCommandExample()
{
RasterCodecs codecs = new RasterCodecs();
string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "CleanNegativePixelsCommand.tif");
// Load the CMP file and convert it to TIF
RasterImage image = codecs.Load(srcFileName);
image.Signed = true;
codecs.Save(image, destFileName, RasterImageFormat.Tif, 24);
image.Dispose();
// Load this image as signed
codecs.Options.Load.Signed = true;
// Load the source image from disk
image = codecs.Load(destFileName);
Assert.IsTrue(image.Signed);
// Clear the negative pixels and save it it back
ClearNegativePixelsCommand command = new ClearNegativePixelsCommand();
command.Run(image);
Assert.IsTrue(!image.Signed);
codecs.Save(image, destFileName, RasterImageFormat.Tif, 24);
// Clean up
image.Dispose();
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools Assembly