/// <summary>
/// Clone the complex image
/// </summary>
///
/// <returns>Returns copy of the image.</returns>
///
public object Clone( )
{
// create new complex image
ComplexImage dstImage = new ComplexImage(width, height);
Complex[,] data = dstImage.data;
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
data[i, j] = this.data[i, j];
}
}
return(dstImage);
}
/// <summary>
/// Creates complex image from bitmap
/// </summary>
///
/// <param name="srcImage">Source bitmap</param>
///
/// <returns>Returns an instance of complex image.</returns>
///
public static ComplexImage FromBitmap(Bitmap srcImage)
{
// get source image size
int width = srcImage.Width;
int height = srcImage.Height;
// check image size
if (
(!Tools.IsPowerOf2(width)) ||
(!Tools.IsPowerOf2(height))
)
{
throw new ArgumentException("Image width and height should be power of 2");
}
// create new complex image
ComplexImage dstImage = new ComplexImage(width, height);
Complex[,] data = dstImage.data;
// lock source bitmap data
BitmapData srcData = srcImage.LockBits(
new Rectangle(0, 0, width, height),
ImageLockMode.ReadOnly, srcImage.PixelFormat);
int offset = srcData.Stride - ((srcImage.PixelFormat == PixelFormat.Format8bppIndexed) ? width : width * 3);
// do the job
unsafe
{
byte *src = (byte *)srcData.Scan0.ToPointer( );
if (srcImage.PixelFormat == PixelFormat.Format8bppIndexed)
{
// grayscale image
// for each line
for (int y = 0; y < height; y++)
{
// for each pixel
for (int x = 0; x < width; x++, src++)
{
data[y, x].Re = (float)*src / 255;
}
src += offset;
}
}
else
{
// RGB image
// for each line
for (int y = 0; y < height; y++)
{
// for each pixel
for (int x = 0; x < width; x++, src += 3)
{
data[y, x].Re = (0.2125 * src[RGB.R] + 0.7154 * src[RGB.G] + 0.0721 * src[RGB.B]) / 255;
}
src += offset;
}
}
}
// unlock source images
srcImage.UnlockBits(srcData);
return(dstImage);
}
