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A RasterColor object specifying the output pixel color of added information.
public RasterColor OutputAddition {get; set;}
@property (nonatomic, assign) LTRasterColor* outputAddition;
public RasterColor getOutputAddition();
public void setOutputAddition(
RasterColor rasterColor
);
public:
property RasterColor^ OutputAddition
{
RasterColor^ get()
void set(RasterColor^ value)
}
OutputAddition # get and set (CompareBitmapCommand)
The color used in the generated image to indicate pixels which were background content in the reference image
, but not in the modified image
. Additionally, any pixels within the bounds of the modified image
that were not within the bounds of the reference image
will be marked with this color. The default value is new RasterColor(0, 255, 0).
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Core;
public void CompareBitmapCommandExample()
{
using (RasterCodecs codecs = new RasterCodecs())
// Load the original image
using (RasterImage referenceImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ocr1.tif")))
// Use the same image for the "modified" image
using (RasterImage modifiedImage = referenceImage.Clone())
{
// Remove the last paragraph of the reference image
referenceImage.AddRectangleToRegion(null, new LeadRect(290, 2470, 1930, 360), RasterRegionCombineMode.Set);
new FillCommand(RasterColor.White).Run(referenceImage);
referenceImage.MakeRegionEmpty();
// Remove the title from the modified image
modifiedImage.AddRectangleToRegion(null, new LeadRect(290, 300, 810, 110), RasterRegionCombineMode.Set);
new FillCommand(RasterColor.White).Run(modifiedImage);
modifiedImage.MakeRegionEmpty();
// Rotate the modified image for demonstration (angle measured in hundredths of a degree)
new RotateCommand(340 * 100, RotateCommandFlags.Resize, RasterColor.Black).Run(modifiedImage);
// Update the transformation to align/reverse the above rotation
LeadMatrix alignment = LeadMatrix.Identity;
alignment.Translate(-modifiedImage.Width * 0.5, -modifiedImage.Height * 0.5);
alignment.Rotate(20.0);
alignment.Translate(referenceImage.Width * 0.5, referenceImage.Height * 0.5);
// Setup the comparison options
CompareBitmapCommand command = new CompareBitmapCommand()
{
Alignment = alignment,
ReferenceImage = referenceImage,
// following properties can be left to their defaults or set to desired values:
ModifiedBackground = RasterColor.White,
ModifiedForeground = RasterColor.Black,
OutputAddition = RasterColor.FromKnownColor(RasterKnownColor.Lime),
OutputBackground = RasterColor.FromKnownColor(RasterKnownColor.White),
OutputChange = RasterColor.FromKnownColor(RasterKnownColor.Yellow),
OutputDeletion = RasterColor.FromKnownColor(RasterKnownColor.Red),
OutputExternal = new RasterColor(0x80, 0x80, 0xff),
OutputMatch = new RasterColor(0x40, 0x40, 0x40),
ReferenceBackground = RasterColor.White,
ReferenceForeground = RasterColor.Black,
Threshold = 0
};
// Compare the images
command.Run(modifiedImage);
// Save the results
using (RasterImage outputImage = command.OutputImage)
codecs.Save(outputImage, Path.Combine(LEAD_VARS.ImagesDir, "CompareBitmap_Output.png"), RasterImageFormat.Png, 0);
// Save the two input images, for reference
codecs.Save(referenceImage, Path.Combine(LEAD_VARS.ImagesDir, "CompareBitmap_Reference.png"), RasterImageFormat.Png, 0);
codecs.Save(modifiedImage, Path.Combine(LEAD_VARS.ImagesDir, "CompareBitmap_Modified.png"), RasterImageFormat.Png, 0);
}
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
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