public static Bitmap AnalyzeImageDifferences(
Bitmap originalImage,
Bitmap newImage )
{
int xCoordinate = 0;
int yCoordinate = 0;
BitmapData newData =
newImage.LockBits(
new Rectangle(
xCoordinate,
yCoordinate,
newImage.Width,
newImage.Height ),
ImageLockMode.ReadOnly,
PixelFormat.Format24bppRgb );
BitmapData originalData =
originalImage.LockBits(
new Rectangle(
xCoordinate,
yCoordinate,
originalImage.Width,
originalImage.Height ),
ImageLockMode.ReadOnly,
PixelFormat.Format24bppRgb );
PointOfInterestList pointOfInterestList =
new PointOfInterestList();
unsafe
{
byte* newPointer = ( byte* )newData.Scan0;
byte* originalPointer = ( byte* )originalData.Scan0;
for ( yCoordinate = 0;
yCoordinate < originalData.Height;
++yCoordinate )
{
for ( xCoordinate = 0;
xCoordinate < originalData.Width;
++xCoordinate )
{
int currentOriginalPixel = (
originalPointer[ 0 ] +
originalPointer[ 1 ] +
originalPointer[ 2 ] );
int currentNewPixel = (
newPointer[ 0 ] +
newPointer[ 1 ] +
newPointer[ 2 ] );
if ( currentNewPixel > currentOriginalPixel + 140
|| currentNewPixel < currentOriginalPixel - 140 )
{
pointOfInterestList.ProcessCoordinates(
xCoordinate, yCoordinate );
}
newPointer += 3;
originalPointer += 3;
}
newPointer +=
newData.Stride - ( newData.Width * 3 );
originalPointer +=
originalData.Stride - ( originalData.Width * 3 );
}
}
originalImage.UnlockBits( originalData );
newImage.UnlockBits( newData );
using ( Graphics graphics = Graphics.FromImage( newImage ) )
{
graphics.DrawRectangles(
new Pen( Color.Red, 1 ),
pointOfInterestList.GetRectangles() );
}
return newImage;
}
public static Bitmap AnalyzeImageDifferences(
Bitmap originalImage,
Bitmap newImage)
{
int xCoordinate = 0;
int yCoordinate = 0;
BitmapData newData =
newImage.LockBits(
new Rectangle(
xCoordinate,
yCoordinate,
newImage.Width,
newImage.Height),
ImageLockMode.ReadOnly,
PixelFormat.Format24bppRgb);
BitmapData originalData =
originalImage.LockBits(
new Rectangle(
xCoordinate,
yCoordinate,
originalImage.Width,
originalImage.Height),
ImageLockMode.ReadOnly,
PixelFormat.Format24bppRgb);
PointOfInterestList pointOfInterestList =
new PointOfInterestList();
unsafe
{
byte *newPointer = ( byte * )newData.Scan0;
byte *originalPointer = ( byte * )originalData.Scan0;
for (yCoordinate = 0;
yCoordinate < originalData.Height;
++yCoordinate)
{
for (xCoordinate = 0;
xCoordinate < originalData.Width;
++xCoordinate)
{
int currentOriginalPixel = (
originalPointer[0] +
originalPointer[1] +
originalPointer[2]);
int currentNewPixel = (
newPointer[0] +
newPointer[1] +
newPointer[2]);
if (currentNewPixel > currentOriginalPixel + 140 ||
currentNewPixel < currentOriginalPixel - 140)
{
pointOfInterestList.ProcessCoordinates(
xCoordinate, yCoordinate);
}
newPointer += 3;
originalPointer += 3;
}
newPointer +=
newData.Stride - (newData.Width * 3);
originalPointer +=
originalData.Stride - (originalData.Width * 3);
}
}
originalImage.UnlockBits(originalData);
newImage.UnlockBits(newData);
using (Graphics graphics = Graphics.FromImage(newImage))
{
graphics.DrawRectangles(
new Pen(Color.Red, 1),
pointOfInterestList.GetRectangles());
}
return(newImage);
}