This code will crop the image based on all white and transparent pixels from around the imagepublicstatic Bitmap CropWhiteSpace(Bitmap bmp)
{
int w = bmp.Width;
int h = bmp.Height;
int white = 0xffffff;
Func<int, bool> allWhiteRow = r =>
{
for (int i = 0; i < w; ++i)
if ((bmp.GetPixel(i, r).ToArgb() & white) != white)
returnfalse;
returntrue;
};
Func<int, bool> allWhiteColumn = c =>
{
for (int i = 0; i < h; ++i)
if ((bmp.GetPixel(c, i).ToArgb() & white) != white)
returnfalse;
returntrue;
};
int topmost = 0;
for (int row = 0; row < h; ++row)
{
if (!allWhiteRow(row))
break;
topmost = row;
}
int bottommost = 0;
for (int row = h - 1; row >= 0; --row)
{
if (!allWhiteRow(row))
break;
bottommost = row;
}
int leftmost = 0, rightmost = 0;
for (int col = 0; col < w; ++col)
{
if (!allWhiteColumn(col))
break;
leftmost = col;
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