public static BinaryImage CropAroundFigures(BinaryImage binaryImage)
{
int topPixelRowMWithOffset = binaryImage.FindTopMostPixelPosition() - CroppingOffset;
if (topPixelRowMWithOffset == -1)
{
return(binaryImage);
}
int bottomPixelRowMWithOffset = binaryImage.FindBottomLinePixelIn() + CroppingOffset;
int leftPixelColumnNWithOffset = binaryImage.FindLeftMostPixelIn() - CroppingOffset;
int rightPixelColumnNWithOffset = binaryImage.FindRightMostPixelIn() + CroppingOffset;
int newTopM = topPixelRowMWithOffset > 0 ? topPixelRowMWithOffset : 0;
int newBottomM = bottomPixelRowMWithOffset < binaryImage.Size.Height - 1
? bottomPixelRowMWithOffset
: binaryImage.Size.Height - 1;
int newLeftN = leftPixelColumnNWithOffset > 0 ? leftPixelColumnNWithOffset : 0;
int newRightN = rightPixelColumnNWithOffset < binaryImage.Size.Width - 1
? rightPixelColumnNWithOffset
: binaryImage.Size.Width - 1;
int newHeight = newBottomM - newTopM + 1;
int newWidth = newRightN - newLeftN + 1;
var croppedImage = new BinaryImage(newWidth, newHeight);
for (int m = 0; m < newHeight; m++)
{
int mPositionInOriginal = topPixelRowMWithOffset + m;
for (int n = 0; n < newWidth; n++)
{
int nPositionInOriginal = leftPixelColumnNWithOffset + n;
croppedImage[m, n] = binaryImage[mPositionInOriginal, nPositionInOriginal];
}
}
return(croppedImage);
}