/// <summary>
/// Converts a bitmap into a new Bytemap.
/// </summary>
/// <param name="bmp">Specifies the bitmap.</param>
/// <returns>A new Bytemap is returned.</returns>
public static Bytemap FromImage(Bitmap bmp)
{
Bytemap data = new Bytemap(3, bmp.Height, bmp.Width);
LockBitmap bmpA = new LockBitmap(bmp);
bmpA.LockBits();
for (int y = 0; y < bmp.Height; y++)
{
for (int x = 0; x < bmp.Width; x++)
{
Color clr = bmpA.GetPixel(x, y);
data.SetPixel(x, y, clr);
}
}
bmpA.UnlockBits();
return(data);
}
/// <summary>
/// Converts the Bytemap into a Bitmap.
/// </summary>
/// <returns>A new bitmap is returned.</returns>
public Bitmap ToImage()
{
Bitmap bmp = new Bitmap(m_nWidth, m_nHeight);
LockBitmap bmpA = new LockBitmap(bmp);
bmpA.LockBits();
for (int y = 0; y < m_nHeight; y++)
{
for (int x = 0; x < m_nWidth; x++)
{
Color clr = GetPixel(x, y);
bmpA.SetPixel(x, y, clr);
}
}
bmpA.UnlockBits();
return(bmp);
}
/// <summary>
/// Converts a SimplDatum (or Datum) into an image, optionally using a ColorMapper.
/// </summary>
/// <param name="d">Specifies the Datum to use.</param>
/// <param name="clrMap">Optionally, specifies a color mapper to use when converting each value into a color (default = null, not used).</param>
/// <param name="rgClrOrder">Optionally, specifies the color ordering. Note, this list must have the same number of elements as there are channels.</param>
/// <returns>The Image of the data is returned.</returns>
public static Bitmap GetImage(SimpleDatum d, ColorMapper clrMap = null, List <int> rgClrOrder = null)
{
if (d.Channels != 1 && d.Channels != 3)
{
throw new Exception("Standard images only support either 1 or 3 channels.");
}
Bitmap bmp = new Bitmap(d.Width, d.Height);
List <byte>[] rgrgByteData = new List <byte> [d.Channels];
List <double>[] rgrgRealData = new List <double> [d.Channels];
int nOffset = 0;
int nCount = d.Height * d.Width;
bool bDataIsReal = d.HasRealData;
double dfMin = 1;
double dfMax = 0;
for (int i = 0; i < d.Channels; i++)
{
List <byte> rgByteData = new List <byte>();
List <double> rgRealData = new List <double>();
int nChIdx = i;
if (rgClrOrder != null)
{
nChIdx = rgClrOrder[i];
}
if (bDataIsReal)
{
for (int j = 0; j < nCount; j++)
{
double dfVal = d.GetDataAtD(nOffset + j);
dfMin = Math.Min(dfMin, dfVal);
dfMax = Math.Max(dfMax, dfVal);
rgRealData.Add(dfVal);
}
rgrgRealData[nChIdx] = rgRealData;
}
else
{
for (int j = 0; j < nCount; j++)
{
rgByteData.Add(d.ByteData[nOffset + j]);
}
rgrgByteData[nChIdx] = rgByteData;
}
nOffset += nCount;
}
LockBitmap bmp1 = new LockBitmap(bmp);
try
{
bmp1.LockBits();
for (int y = 0; y < bmp1.Height; y++)
{
for (int x = 0; x < bmp1.Width; x++)
{
Color clr;
int nIdx = (y * bmp1.Width) + x;
if (d.Channels == 1)
{
if (bDataIsReal)
{
if (dfMin >= 0 && dfMax <= 1.0)
{
int nG = clip((int)(rgrgRealData[0][nIdx] * 255.0), 0, 255);
clr = Color.FromArgb(nG, nG, nG);
}
else
{
clr = Color.FromArgb((int)rgrgRealData[0][nIdx]);
}
if (clrMap != null)
{
clr = clrMap.GetColor(clr.ToArgb());
}
}
else
{
int nR = clip((int)rgrgByteData[0][nIdx], 0, 255);
int nG = clip((int)rgrgByteData[0][nIdx], 0, 255);
int nB = clip((int)rgrgByteData[0][nIdx], 0, 255);
clr = Color.FromArgb(nR, nG, nB);
}
}
else
{
if (bDataIsReal)
{
int nR = clip((int)rgrgRealData[0][nIdx], 0, 255);
int nG = clip((int)rgrgRealData[1][nIdx], 0, 255);
int nB = clip((int)rgrgRealData[2][nIdx], 0, 255);
clr = Color.FromArgb(nR, nG, nB);
if (clrMap != null)
{
clr = clrMap.GetColor(clr.ToArgb());
}
}
else
{
int nR = clip((int)rgrgByteData[0][nIdx], 0, 255);
int nG = clip((int)rgrgByteData[1][nIdx], 0, 255);
int nB = clip((int)rgrgByteData[2][nIdx], 0, 255);
clr = Color.FromArgb(nR, nG, nB);
}
}
bmp1.SetPixel(x, y, clr);
}
}
}
catch (Exception excpt)
{
throw excpt;
}
finally
{
bmp1.UnlockBits();
}
return(bmp);
}
/// <summary>
/// The GetImageDataD function converts a Bitmap into a Datum using the <i>double</i> type for real data.
/// </summary>
/// <param name="bmp">Specifies the Bitmap containing the image.</param>
/// <param name="nChannels">Specifies the number of channels contained in the Bitmap (e.g. 3 = color, 1 = black and white).</param>
/// <param name="bDataIsReal">Specifies whether or not to add each color to the List of <i>double</i> or to the list of <i>byte</i>. Using the <i>byte</i> array is more common for it already separates a 3 color Bitmap into 3 channels of data.</param>
/// <param name="nLabel">Specifies the known label.</param>
/// <param name="bUseLockBitmap">Optionally, use the Lock Bitmap which is faster but may produce corrupted images in a few scenarios (default = true).</param>
/// <returns>The Datum representing the image is returned.</returns>
public static Datum GetImageDataD(Bitmap bmp, int nChannels, bool bDataIsReal, int nLabel, bool bUseLockBitmap = true)
{
if (nChannels != 1 && nChannels != 3)
{
throw new Exception("Images only support either 1 or 3 channels.");
}
List <byte>[] rgrgByteData = new List <byte> [nChannels];
List <double>[] rgrgRealData = new List <double> [nChannels];
for (int i = 0; i < nChannels; i++)
{
rgrgByteData[i] = new List <byte>();
rgrgRealData[i] = new List <double>();
}
if (bmp.Width >= bmp.Height && bUseLockBitmap)
{
LockBitmap bmp1 = new LockBitmap(bmp);
try
{
bmp1.LockBits();
for (int y = 0; y < bmp1.Height; y++)
{
for (int x = 0; x < bmp1.Width; x++)
{
Color clr = bmp1.GetPixel(x, y);
if (nChannels == 1)
{
if (bDataIsReal)
{
rgrgRealData[0].Add(clr.ToArgb());
}
else
{
rgrgByteData[0].Add((byte)((clr.R * 0.3) + (clr.G * 0.59) + (clr.B * 0.11)));
}
}
else
{
if (bDataIsReal)
{
rgrgRealData[0].Add(clr.R);
rgrgRealData[1].Add(clr.G);
rgrgRealData[2].Add(clr.B);
}
else
{
rgrgByteData[0].Add(clr.R);
rgrgByteData[1].Add(clr.G);
rgrgByteData[2].Add(clr.B);
}
}
}
}
}
catch (Exception excpt)
{
throw excpt;
}
finally
{
bmp1.UnlockBits();
}
}
// LockBitmap currently has a bug with images were bmp.Width < bmp.Height so in this case we use the slower Bitmap.GetPixel.
else
{
for (int y = 0; y < bmp.Height; y++)
{
for (int x = 0; x < bmp.Width; x++)
{
Color clr = bmp.GetPixel(x, y);
if (nChannels == 1)
{
if (bDataIsReal)
{
rgrgRealData[0].Add(clr.ToArgb());
}
else
{
rgrgByteData[0].Add((byte)((clr.R * 0.3) + (clr.G * 0.59) + (clr.B * 0.11)));
}
}
else
{
if (bDataIsReal)
{
rgrgRealData[0].Add(clr.R);
rgrgRealData[1].Add(clr.G);
rgrgRealData[2].Add(clr.B);
}
else
{
rgrgByteData[0].Add(clr.R);
rgrgByteData[1].Add(clr.G);
rgrgByteData[2].Add(clr.B);
}
}
}
}
}
List <byte> rgByteData = new List <byte>();
List <double> rgRealData = new List <double>();
for (int i = 0; i < nChannels; i++)
{
rgByteData.AddRange(rgrgByteData[i]);
rgRealData.AddRange(rgrgRealData[i]);
}
if (bDataIsReal)
{
return(new Datum(true, nChannels, bmp.Width, bmp.Height, nLabel, DateTime.MinValue, new List <double>(rgRealData), 0, false, -1));
}
else
{
return(new Datum(false, nChannels, bmp.Width, bmp.Height, nLabel, DateTime.MinValue, new List <byte>(rgByteData), 0, false, -1));
}
}