public static Bitmap AutoScale(Bitmap _currentBitmap)
{
Bitmap bmap = (Bitmap)_currentBitmap;
LockBitmap lockBitmap = new LockBitmap(bmap);
lockBitmap.LockBits();
Color c;
// Find min point on X axis with non 0 data
// Find max point on X axis with non 0 data
// Find min point on Y axis with non 0 data
// Find max point on Y axis with non 0 data
int i, j;
int widthMinus1 = bmap.Width - 1;
int heightMinus1 = bmap.Height - 1;
int xMin = widthMinus1, yMin = heightMinus1;
int xMax = 0, yMax = 0;
for (i = 0; i < bmap.Width; i++)
{
for (j = 0; j < bmap.Height; j++)
{
c = bmap.GetPixel(i, j);
if (c.R != 0 || c.G != 0 || c.B != 0)
{
xMin = Math.Min(xMin, i);
yMin = Math.Min(yMin, j);
}
}
}
for (i = widthMinus1; i >= 0; i--)
{
for (j = heightMinus1; j >= 0; j--)
{
c = bmap.GetPixel(i, j);
if (c.R != 0 || c.G != 0 || c.B != 0)
{
xMax = Math.Max(xMax, i);
yMax = Math.Max(yMax, j);
}
}
}
lockBitmap.UnlockBits();
return TranslateAndScaleImage(bmap, new PointF(-xMin, -yMax), new PointF(Math.Abs((float)bmap.Width / (float)(xMax - xMin)), Math.Abs((float)bmap.Height / (float)(yMax - yMin)))); // , InterpolationMode.HighQualityBicubic, bmap.PixelFormat);
}
private void ReadImage()
{
Bitmap image = Obj;
Bitmap greyScaleImage = BitmapManipulator.MakeGrayscale3(image);
//Bitmap greyScaleImage = BitmapManipulator.ApplyGreyscale(image);
//int i, j;
GreyImage = new int[Obj.Width, Obj.Height]; //[Row,Column]
LockBitmap lockBitmap = new LockBitmap(greyScaleImage);
lockBitmap.LockBits();
for (int y = 0; y < lockBitmap.Height; y++)
{
for (int x = 0; x < lockBitmap.Width; x++)
{
GreyImage[x, y] = (int)lockBitmap.GetPixel(x, y).R;
if (lockBitmap.GetPixel(x, y).R != lockBitmap.GetPixel(x, y).B && lockBitmap.GetPixel(x, y).R != lockBitmap.GetPixel(x, y).G)
{
int foo = 0;
foo = foo + 1;
}
}
}
lockBitmap.UnlockBits();
//BitmapData bitmapData1 = image.LockBits(new Rectangle(0, 0, image.Width, image.Height),
// ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
//unsafe
//{
// byte* imagePointer1 = (byte*)bitmapData1.Scan0;
// for (i = 0; i < bitmapData1.Height; i++)
// {
// for (j = 0; j < bitmapData1.Width; j++)
// {
// GreyImage[j, i] = (int)((imagePointer1[0] + imagePointer1[1] + imagePointer1[2]) / 3.0);
// //4 bytes per pixel
// imagePointer1 += 4;
// }//end for j
// //4 bytes per pixel
// imagePointer1 += bitmapData1.Stride - (bitmapData1.Width * 4);
// }//end for i
//}//end unsafe
//image.UnlockBits(bitmapData1);
return;
}
// NOTE: This was slow, but is now much faster now that LockBits is used!
public static Bitmap SetBlackToWhite(Bitmap _currentBitmap)
{
Bitmap temp = (Bitmap)_currentBitmap;
Bitmap bmap = (Bitmap)temp.Clone();
LockBitmap lockBitmap = new LockBitmap(bmap);
lockBitmap.LockBits();
Color c;
for (int i = 0; i < bmap.Width; i++)
{
for (int j = 0; j < bmap.Height; j++)
{
c = bmap.GetPixel(i, j);
if (c.R == 0 && c.G == 0 && c.B == 0)
bmap.SetPixel(i, j, Color.FromArgb(255, 255, 255));
}
}
// _currentBitmap = (Bitmap)bmap.Clone();
lockBitmap.UnlockBits();
return bmap;
}
public Bitmap DisplayImage(int[,] GreyImage)
{
//int i, j;
int W, H;
W = GreyImage.GetLength(0);
H = GreyImage.GetLength(1);
Bitmap image = new Bitmap(W, H);
LockBitmap lockBitmap = new LockBitmap(image);
lockBitmap.LockBits();
for (int y = 0; y < lockBitmap.Height; y++)
{
for (int x = 0; x < lockBitmap.Width; x++)
{
lockBitmap.SetPixel(x, y, Color.FromArgb((byte)GreyImage[x, y], (byte)GreyImage[x, y], (byte)GreyImage[x, y]));
}
}
lockBitmap.UnlockBits();
//BitmapData bitmapData1 = image.LockBits(new Rectangle(0, 0, W, H),
// ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
//unsafe
//{
// byte* imagePointer1 = (byte*)bitmapData1.Scan0;
// for (i = 0; i < bitmapData1.Height; i++)
// {
// for (j = 0; j < bitmapData1.Width; j++)
// {
// // write the logic implementation here
// imagePointer1[0] = (byte)GreyImage[j, i];
// imagePointer1[1] = (byte)GreyImage[j, i];
// imagePointer1[2] = (byte)GreyImage[j, i];
// imagePointer1[3] = (byte)255;
// //4 bytes per pixel
// imagePointer1 += 4;
// } //end for j
// //4 bytes per pixel
// imagePointer1 += (bitmapData1.Stride - (bitmapData1.Width * 4));
// }//End for i
//}//end unsafe
//image.UnlockBits(bitmapData1);
return image;// col;
}
