private static int?GetBottomEdgeOfRegionOfInterest(FlattenedBitmap flattenedBitmap)
{
for (int i = flattenedBitmap.Height - 1; i >= 0; --i)
{
for (int j = flattenedBitmap.Stride - 1; j >= 0; --j)
{
if (flattenedBitmap.Data[i, j] < 255)
{
return(i == flattenedBitmap.Height - 1 ? i : i + 1);
}
}
}
return(null);
}
private static int?GetTopEdgeOfRegionOfInterest(FlattenedBitmap flattenedBitmap)
{
for (int i = 0; i < flattenedBitmap.Height - 1; ++i)
{
for (int j = 0; j < flattenedBitmap.Stride - 1; ++j)
{
if (flattenedBitmap.Data[i, j] < 255)
{
return(i == 0 ? 0 : i - 1);
}
}
}
return(null);
}