private void button9_Click(object sender, EventArgs e)
{
var tmp = TestImageGenerator.GetTestPair(size0, size1, 5, 15);
image = tmp.Item1.images[0];
image_res = tmp.Item2;
fft_image = Complex.CreateComplexArray(image);
FourierTransform.FFT2(fft_image, FourierTransform.Direction.Forward);
CreateHilbertFilter();
Complex.ApplyFilter(fft_image, filter_image);
FourierTransform.FFT2(fft_image, FourierTransform.Direction.Backward);
image = Tools.CalculatePhaseImageByHilbert(fft_image);
unwrapper.UpdateParamsIfNeed(image);
unwrapper.UnwrapParallel(image, out var scr);
ImageSource.subtract_min(image);
ImageSource.subtract_min(image_res);
var d = ImageSource.diff(image, image_res);
label1.Text = Math.Round(ImageSource.max(d), 5).ToString();;
label2.Text = Math.Round(ImageSource.min(d), 5).ToString();;
label3.Text = Math.Round(ImageSource.std(image, image_res), 5).ToString();;
label1.Update();
label2.Update();
label3.Update();
plot(d);
}
internal unsafe static Image <Complex, TDepth> FFT <TDepth>(this Image <Complex, TDepth> image, FourierTransform.Direction direction, bool inPlace = false)
where TDepth : struct
{
Image <Complex, TDepth> dest = null;
if (inPlace)
{
dest = image;
}
else
{
dest = image.Clone();
}
if (typeof(TDepth).Equals(typeof(float)))
{
FourierTransform.FFT2((ComplexF *)dest.ImageData, dest.Width, dest.Height, dest.Stride, direction);
}
else if (typeof(TDepth).Equals(typeof(double)))
{
throw new NotImplementedException(); //TODO: implement for double
//FourierTransform.FFT2((Complex*)dest.ImageData, dest.Width, dest.Height, dest.Stride, direction);
}
else
{
throw new NotSupportedException();
}
return(dest);
}
// Moution Blur....................................
public static ByteBitmap WienerFilterFromMoution(ByteBitmap aBitmap, float Length, int Angle, float Nsr)
{
//make fft from abitmap
Point lStart;
ByteBitmap lLoc = FFTHelpers.FitByteBitmapForFFT2D(aBitmap, 10, out lStart, 255);
Complex[,] lFx = FFTHelpers.ByteBitmapToComplex(lLoc);
FourierTransform.FFT2(lFx, FourierTransform.Direction.Forward);
//make moution FFT
Complex[,] lHx = GetMotionComplexImage(new Size(lLoc.Width, lLoc.Height), Angle, Length);
FourierTransform.FFT2(lHx, FourierTransform.Direction.Forward);
//make wiener
Complex[,] lWR = WienerFilter(lFx, lHx, Nsr);
//backward result
FourierTransform.FFT2(lWR, FourierTransform.Direction.Backward);
//convert to bytebitmap
ByteBitmap lRes = FFTHelpers.ComplexToByteBitmap(lWR);
lRes = FFTHelpers.GetFittedByteBitmapFromFFT2D(lRes, lStart, new Size(aBitmap.Width, aBitmap.Height));
return(lRes);
}
public static WriteableBitmap MakeFFT(WriteableBitmap image)
{
Complex[,] grayImage = ToGrayScale(image);
FourierTransform.FFT2(grayImage, FourierTransform.Direction.Forward);
return(ComplexToMagnitude(grayImage, image.PixelHeight));
}
public Form1()
{
InitializeComponent();
Bitmap bmp = Bitmap.FromFile("lenagr.png") as Bitmap;
pictureBox1.Image = bmp;
Complex[,] cImage = ToComplex(bmp);
for (int y = 0; y < cImage.GetLength(1); y++)
{
for (int x = 0; x < cImage.GetLength(0); x++)
{
if (((x + y) & 0x1) != 0)
{
double real = cImage[y, x].Real * (-1);
double imaginary = cImage[y, x].Imaginary * (-1);
cImage[y, x] = new Complex(real, imaginary);
}
}
}
FourierTransform.FFT2(cImage, FourierTransform.Direction.Forward);
double[,] intImage = ToDouble(cImage);
intImage = Limit(intImage);
Bitmap bmpMagImg = ToBitmap(intImage, PixelFormat.Format24bppRgb);
pictureBox2.Image = bmpMagImg;
}
public void FFT2_test1()
{
var tuple = TestImageGenerator.GetTestPair(1024, 1024, 4);
Complex[,] test_image = Complex.CreateComplexArray(tuple.Item1.images[0]);
FourierTransform.FFT2(test_image, FourierTransform.Direction.Forward);
Complex[,] reserv = (Complex[, ])test_image.Clone();
FourierTransform.FFT2(test_image, FourierTransform.Direction.Backward);
double[,] inverse_result = Complex.CreateDoubleArray(test_image);
double std = ImageSource.std(tuple.Item1.images[0], inverse_result);
Assert.IsTrue(std < ImageSource.mean(tuple.Item1.images[0]) / 1000);
}
public override void Calc()
{
if (!calc)
{
return;
}
int size0 = images[0].GetUpperBound(0) + 1;
int size1 = images[0].GetUpperBound(1) + 1;
Complex[,] test_image = Complex.CreateComplexArray(images[0]);
FourierTransform.FFT2(test_image, FourierTransform.Direction.Forward);
filter = CreateFilterIfNeed(size0, size1);
Complex.ApplyFilter(test_image, filter);
FourierTransform.FFT2(test_image, FourierTransform.Direction.Backward);
images[0] = Tools.CalculatePhaseImageByHilbert(test_image);
}
public void FFT2_test2()
{
var tuple = TestImageGenerator.GetTestPair(1024, 2048, 4);
//DateTime dt1 = DateTime.UtcNow;
Complex[,] test_image = Complex.CreateComplexArray(tuple.Item1.images[0]);
DateTime dt1 = DateTime.UtcNow;
FourierTransform.FFT2(test_image, FourierTransform.Direction.Forward);
Complex[,] reserv = (Complex[, ])test_image.Clone();
FourierTransform.FFT2(test_image, FourierTransform.Direction.Backward);
double[,] inverse_result = Complex.CreateDoubleArray(test_image);
double resss = dt1.Subtract(DateTime.UtcNow).TotalSeconds;
double std = ImageSource.std(tuple.Item1.images[0], inverse_result);
Assert.IsTrue(std < ImageSource.mean(tuple.Item1.images[0]) / 1000);
}
/// <summary>
/// Calculates Fast Fourier transform.
/// </summary>
/// <param name="image">Input image.</param>
/// <param name="direction">Forward or backward direction.</param>
/// <param name="inPlace">Process in place or not.</param>
/// <returns>Processed image. If <paramref name="inPlace"/> is used the result is the same as input image therefore may be omitted.</returns>
public unsafe static ComplexF[,] FFT(this ComplexF[,] image, FourierTransform.Direction direction, bool inPlace = false)
{
ComplexF[,] dest = null;
if (inPlace)
{
dest = image;
}
else
{
dest = (ComplexF[, ])image.Clone();
}
using (var uDest = dest.Lock())
{
FourierTransform.FFT2((ComplexF *)uDest.ImageData, uDest.Width, uDest.Height, uDest.Stride, direction);
}
return(dest);
}
/// <summary>
/// Applies forward fast Fourier transformation to the complex image.
/// </summary>
///
public void ForwardFourierTransform( )
{
if (!fourierTransformed)
{
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
if (((x + y) & 0x1) != 0)
{
data[y, x] *= -1.0;
}
}
}
FourierTransform.FFT2(data, FourierTransform.Direction.Forward);
fourierTransformed = true;
}
}
/// <summary>
/// Applies backward fast Fourier transformation to the complex image.
/// </summary>
///
public void BackwardFourierTransform( )
{
if (fourierTransformed)
{
FourierTransform.FFT2(data, FourierTransform.Direction.Backward);
fourierTransformed = false;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
if (((x + y) & 0x1) != 0)
{
data[y, x] *= -1.0;
}
}
}
}
}
public void BackwardFourierTransform()
{
if (!fourierTransformed)
{
return;
}
FourierTransform.FFT2(data, FourierTransform.Direction.Backward);
fourierTransformed = false;
for (int i = 0; i < height; i++)
{
for (int j = 0; j < width; j++)
{
if (((j + i) & 1) != 0)
{
data[i, j].Re *= -1.0;
data[i, j].Im *= -1.0;
}
}
}
}
/// <summary>
/// Applies backward fast Fourier transformation to the complex image.
/// </summary>
///
public void BackwardFourierTransform( )
{
if ( this.fourierTransformed )
{
FourierTransform.FFT2(this.data , FourierTransform.Direction.Backward );
this.fourierTransformed = false;
for ( var y = 0; y < this.height; y++ )
{
for ( var x = 0; x < this.width; x++ )
{
if ( ( ( x + y ) & 0x1 ) != 0 )
{
this.data[y, x].Re *= -1;
this.data[y, x].Im *= -1;
}
}
}
}
}
// Backward Fourier Transform
public void BackwardFourierTransform( )
{
if (fmode)
{
FourierTransform.FFT2(data, FourierDirection.Backward);
fmode = false;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
if (((x + y) & 0x1) != 0)
{
data[y, x].Re *= -1;
data[y, x].Im *= -1;
}
}
}
}
}
// Farward Fourier Transform
public void ForwardFourierTransform( )
{
if (!fmode)
{
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
if (((x + y) & 0x1) != 0)
{
data[y, x].Re *= -1;
data[y, x].Im *= -1;
}
}
}
FourierTransform.FFT2(data, FourierDirection.Forward);
fmode = true;
}
}
public void ForwardFourierTransform()
{
if (!this.fmode)
{
for (int i = 0; i < this.height; i++)
{
for (int j = 0; j < this.width; j++)
{
if (((j + i) & 1) != 0)
{
Complex complex1 = this.data[i, j];
complex1.Re *= -1f;
Complex complex2 = this.data[i, j];
complex2.Im *= -1f;
}
}
}
FourierTransform.FFT2(this.data, FourierDirection.Forward);
this.fmode = true;
}
}
public void ForwardFourierTransform()
{
if (!this.fourierTransformed)
{
for (int i = 0; i < this.height; i++)
{
for (int j = 0; j < this.width; j++)
{
if (((j + i) & 1) != 0)
{
Complex complex1 = this.data[i, j];
complex1.Re *= -1.0;
Complex complex2 = this.data[i, j];
complex2.Im *= -1.0;
}
}
}
FourierTransform.FFT2(this.data, 1);
this.fourierTransformed = true;
}
}
private void Form1_Load(object sender, EventArgs e)
{
String address = "D:/workshop/holography/WindowsFormsApplication1/WindowsFormsApplication1";
String file_name = "/Tang25.txt";
file_manager file = new file_manager(file_name, address);
file.read_coordinate();
// file.write_coordinate_file(file.x, file.y, file.z, file.r, file.g, file.b);
List <double> obj_x = new List <double>();
List <double> obj_y = new List <double>();
List <double> obj_z = new List <double>();
List <double> obj_r = new List <double>();
List <double> obj_g = new List <double>();
List <double> obj_b = new List <double>();
List <double> O = new List <double>();
for (int i = 0; i < file.x.Count; i++)
{
//System.Console.WriteLine(i + " " + file.x[i] + " " + file.y[i] + " " + file.z[i]);
obj_x.Add(Math.Round((Convert.ToDouble(file.x[i]) + 100) * 5));
obj_y.Add(Math.Round((Convert.ToDouble(file.y[i]) + 50) * 6));
obj_z.Add(-Math.Round(Convert.ToDouble(file.z[i]) - 230));
obj_r.Add(Convert.ToDouble(file.r[i]));
obj_g.Add(Convert.ToDouble(file.g[i]));
obj_b.Add(Convert.ToDouble(file.b[i]));
}
int o = 8;
int t = 1;
int s = 1024;
double d = 0.25;
double lambda = 532e-9;
double k = 2 * Math.PI / lambda;
double Hologram_sampling_interval = 7.4e-6;
double dx = Hologram_sampling_interval;
double dy = Hologram_sampling_interval;
double[,] image = new double[s, s];
for (int i = 0; i < obj_x.Count; i++)
{
obj_x[i] = obj_x[i] * t;
obj_y[i] = obj_y[i] * t;
obj_z[i] = obj_z[i] * 1;
}
List <double> Cut = obj_z.Distinct().ToList();
Cut.Sort();
double Ny = s;
double Nx = s;
double fx = 1 / (dx * Nx);
double fy = 1 / (dy * Ny);
double[,] x = new double[s, s];
double[,] y = new double[s, s];
Complex complex1 = new Complex(1, 1);
Complex[,] Hologram = new Complex[s, s];
int counter_y = 0;
for (int i = 0; i < s; i++)
{
int counter_x = 0;
if (counter_y == s / 2)
{
counter_y *= -1;
}
for (int j = 0; j < s; j++)
{
if (counter_x == s / 2)
{
counter_x *= -1;
}
x[i, j] = counter_x * fx;
y[i, j] = counter_y * fy;
counter_x++;
}
counter_y++;
}
double d1;
Complex[,] O_image;
Complex[,] H = new Complex[s, s];
Complex[,] film;
double[,] phase_h = new double[s, s];
double max = -1.0;
for (int i = 0; i < Cut.Count; i++)
{
film = new Complex[s, s];
H = new Complex[s, s];
O_image = new Complex[s, s];
d1 = d - Cut[i] * Hologram_sampling_interval / 2;
for (int j = 0; j < obj_z.Count; j++)
{
if (Cut[i] == obj_z[j])
{
O_image[Convert.ToInt32(obj_x[j]), Convert.ToInt32(obj_y[j])] = (Complex)obj_r[j];
}
}
FourierTransform.FFT2(O_image, FourierTransform.Direction.Backward); // fft2 O_image = fft2(O_image);
// Stopwatch stopwatch = Stopwatch.StartNew(); //creates and start the instance of Stopwatch
Complex com2 = Complex.Exp(new Complex(0, (1 * k * d1)));
for (var p = 0; p < s; p++)
{ // H = exp(1i*k*d1).*exp(-1i*pi*lambda*d1*(x.^2+y.^2));
Complex com1;
for (var j = 0; j < s; j++)
{
com1 = Complex.Exp(new Complex(0, (-1 * Math.PI * lambda * d1 * (Math.Pow(x[p, j], 2) + Math.Pow(y[p, j], 2)))));
H[p, j] = Complex.Multiply(com1, com2); // H = exp(1i*k*d1).*exp(-1i*pi*lambda*d1*(x.^2+y.^2));
film[p, j] = Complex.Multiply(O_image[p, j], H[p, j]); // lol =O_image.*H;
}
}
//////Stop();
//Console.WriteLine(stopwatch.ElapsedMilliseconds);
FourierTransform.FFT2(film, FourierTransform.Direction.Forward); //ifft2 film3 =ifft2(lol);
for (int p = 0; p < s; p++)
{
for (int j = 0; j < s; j++)
{
Hologram[p, j] = Complex.Add(Hologram[p, j], film[p, j]); // Hologram = Hologram+film3;
if (i == Cut.Count - 1)
{
phase_h[p, j] = Hologram[p, j].Phase + Math.PI; //phase_H = angle(Hologram) + pi;
if (phase_h[p, j] > max)
{
max = phase_h[p, j];
}
} // end of finding max and adding phase
}
}
} //end of Cut
// Console.WriteLine(max);
byte[,] phase_h_image = new byte[s, s];
double d2 = d - o * 0.0001;
Complex com3 = Complex.Exp(new Complex(0, (1 * k * -d2)));
for (int p = 0; p < s; p++)
{
Complex com1;
for (int j = 0; j < s; j++)
{
double temp = 255 * phase_h[p, j] / max; ///phase_H_image = uint8(255*phase_H/max(max(phase_H)));
phase_h_image[p, j] = System.Convert.ToByte(temp);
com1 = Complex.Exp(new Complex(0, (-1 * Math.PI * lambda * -d2 * (Math.Pow(x[p, j], 2) + Math.Pow(y[p, j], 2)))));
H[p, j] = Complex.Multiply(com1, com3); //H = exp(1i*k*z).*exp(-1i*pi*lambda*z*(x.^2+y.^2));
}
}
FourierTransform.FFT2(Hologram, FourierTransform.Direction.Backward); // O = fft2(object);
Complex[,] originalR = new Complex[s, s];
for (int p = 0; p < s; p++)
{
for (int j = 0; j < s; j++)
{
originalR[p, j] = Complex.Multiply(Hologram[p, j], H[p, j]); //hologram =ifft2(O.*H); = > O_F = O.*H
}
}
FourierTransform.FFT2(originalR, FourierTransform.Direction.Forward); // hologram =ifft2(O_F)
double[,] O_F = new double[s, s];
for (int p = 0; p < s; p++)
{
for (int j = 0; j < s; j++)
{
O_F[p, j] = originalR[p, j].Magnitude; //abs(originalR)
}
}
Bitmap bmp = ToBitmap(O_F);
PictureBox P = new PictureBox();
P.Image = bmp;
P.Dock = DockStyle.Fill;
this.Controls.Add(P);
this.Show();
System.Console.WriteLine("END");
}// end of form
public Quaternion[] QuaternionFourierTransform(int dim1, int dim2, double[] real, double[] i, double[] j, double[] k, bool inverse)
{
//Create Arrays of Complex data
Complex[,] f1 = new Complex[dim1, dim2];
Complex[,] f2 = new Complex[dim1, dim2];
//For loop for filling in the data to two complex arrays one consisting of r and i.
//The other j and k.
for (int x = 0; x < dim1 - 4; x++)
{
for (int y = 0; y < dim2; y++)
{
f1[x, y] = new Complex(real[y * dim2 + x], i[y * dim2 + x]);
f2[x, y] = new Complex(j[y * dim2 + x], k[y * dim2 + x]);
}
}
//If statement to check whether to do forward or backward FFT.
if (inverse)
{
FourierTransform.FFT2(f1, FourierTransform.Direction.Backward);
FourierTransform.FFT2(f2, FourierTransform.Direction.Backward);
}
else
{
FourierTransform.FFT2(f1, FourierTransform.Direction.Forward);
FourierTransform.FFT2(f2, FourierTransform.Direction.Forward);
}
//Concat the two FFTS to one single quaternion array.
Quaternion[] Concat = new Quaternion[dim1 * dim2];
for (int x = 0; x < dim1; x++)
{
for (int y = 0; y < dim2; y++)
{
Concat[x + y * dim2] = new Quaternion((float)f1[x, y].Im, (float)f2[x, y].Re, (float)f2[x, y].Im, (float)f1[x, y].Re);
}
}
return(Concat);
//Concatenate
//int align = System.Runtime.InteropServices.Marshal.SizeOf(typeof(Complex));// sizeof(Complex);
// Do something on frequency domain
//backward_1.fftNormalized(f1);
//backward_2.fftNormalized(f2);
//
//for (int j = 0; j < dim1; j++)
//{
// for (int i = 0; i < dim2; i++)
// {
// double p1 = real(f1(i, j));
// double p2 = imag(f1(i, j));
// double p3 = real(f2(i, j));
// double p4 = imag(f2(i, j));
//
// // Do something after inverse transform
// }
//}
}
//public static double[,] ConvolutionFFT(int[,] image, int[,] kernel)
//{
// int maxSize = Math.Max(Math.Max(Math.Max(image.GetLength(0), image.GetLength(1)), kernel.GetLength(0)), kernel.GetLength(1));
// int size = 1;
// while (size < maxSize)
// {
// size *= 2;
// }
// size *= 2;
// Console.WriteLine(size);
// //Create complext image
// Complex[,] image_complex = new Complex[size, size];
// for (int i = 0; i < image.GetLength(0); i++)
// {
// for (int j = 0; j < image.GetLength(1); j++)
// {
// image_complex[i,j] = new Complex(image[i,j], 0);
// }
// }
// //Create complext kernel
// Complex[,] kernel_complexl = new Complex[size, size];
// for (int i = 0; i < kernel.GetLength(0); i++)
// {
// for (int j = 0; j < kernel.GetLength(1); j++)
// {
// kernel_complexl[i, j] = new Complex(kernel[i, j], 0);
// }
// }
// kernel_complexl[0, 0] = new Complex(1, 0);
// //Do work
// FourierTransform.FFT2(image_complex, FourierTransform.Direction.Forward);
// FourierTransform.FFT2(kernel_complexl, FourierTransform.Direction.Forward);
// for (int i = 0; i < size; i++)
// {
// for (int j = 0; j < size; j++)
// {
// image_complex[i, j] = image_complex[i, j] * new Complex(kernel_complexl[i, j].Re, -kernel_complexl[i, j].Im);
// }
// }
// FourierTransform.FFT2(image_complex, FourierTransform.Direction.Backward);
// //Do get result
// double normalization = size * size;
// double[,] result = new double[image.GetLength(0), image.GetLength(1)];
// for (int i = 0; i < result.GetLength(0); i++)
// {
// for (int j = 0; j < result.GetLength(0); j++)
// {
// result[i, j] = image_complex[i, j].Re * normalization;
// }
// }
// return result;
//}
public static double[,] CorrelationFFT(double[,] image, double[,] kernel)
{
double image_min = double.MaxValue;
double image_max = double.MinValue;
double kernel_min = double.MaxValue;
double kernel_max = double.MinValue;
for (int i = 0; i < image.GetLength(0); i++)
{
for (int j = 0; j < image.GetLength(1); j++)
{
image_min = Math.Min(image_min, image[i, j]);
image_max = Math.Max(image_max, image[i, j]);
}
}
for (int i = 0; i < kernel.GetLength(0); i++)
{
for (int j = 0; j < kernel.GetLength(1); j++)
{
kernel_min = Math.Min(kernel_min, kernel[i, j]);
kernel_max = Math.Max(kernel_max, kernel[i, j]);
}
}
int maxSize = Math.Max(Math.Max(Math.Max(image.GetLength(0), image.GetLength(1)), kernel.GetLength(0)), kernel.GetLength(1));
int size = 1;
while (size < maxSize)
{
size *= 2;
}
//size *= 2;
Console.WriteLine(size);
//Create complext image
Complex[,] image_complex = new Complex[size, size];
for (int i = 0; i < image.GetLength(0); i++)
{
for (int j = 0; j < image.GetLength(1); j++)
{
image_complex[i, j] = new Complex((image[i, j] - image_min) / (image_max - image_min), 0);
}
}
//Create complext kernel
double kernel_sum = 0;
Complex[,] kernel_complexl = new Complex[size, size];
for (int i = 0; i < kernel.GetLength(0); i++)
{
for (int j = 0; j < kernel.GetLength(1); j++)
{
kernel_sum += (kernel[i, j] - kernel_min) / (kernel_max - kernel_min);
kernel_complexl[i, j] = new Complex((kernel[i, j] - kernel_min) / (kernel_max - kernel_min), 0);
}
}
kernel_complexl[0, 0] = new Complex(1, 0);
//Do work
FourierTransform.FFT2(image_complex, FourierTransform.Direction.Forward);
FourierTransform.FFT2(kernel_complexl, FourierTransform.Direction.Forward);
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
image_complex[i, j] = image_complex[i, j] * new Complex(kernel_complexl[i, j].Re, -kernel_complexl[i, j].Im);
}
}
FourierTransform.FFT2(image_complex, FourierTransform.Direction.Backward);
double normalization = size * size / kernel_sum;
double[,] result = new double[image.GetLength(0), image.GetLength(1)];
for (int i = 0; i < result.GetLength(0); i++)
{
for (int j = 0; j < result.GetLength(1); j++)
{
result[i, j] = image_complex[i, j].Re * normalization;
}
}
return(result);
}
private void Form1_Load(object sender, EventArgs e)
{
String address = "D:/workshop/holography/WindowsFormsApplication1/WindowsFormsApplication1";
String file_name = "/Tang25.txt";
file_manager file = new file_manager(file_name, address);
file.read_coordinate();
// file.write_coordinate_file(file.x, file.y, file.z, file.r, file.g, file.b);
List <double> obj_x = new List <double>();
List <double> obj_y = new List <double>();
List <double> obj_z = new List <double>();
List <double> obj_r = new List <double>();
List <double> obj_g = new List <double>();
List <double> obj_b = new List <double>();
List <double> O = new List <double>();
for (int i = 0; i < file.x.Count; i++)
{
//System.Console.WriteLine(i + " " + file.x[i] + " " + file.y[i] + " " + file.z[i]);
obj_x.Add(Math.Round((Convert.ToDouble(file.x[i]) + 100) * 5));
obj_y.Add(Math.Round((Convert.ToDouble(file.y[i]) + 50) * 6));
obj_z.Add(-Math.Round(Convert.ToDouble(file.z[i]) - 230));
obj_r.Add(Convert.ToDouble(file.r[i]));
obj_g.Add(Convert.ToDouble(file.g[i]));
obj_b.Add(Convert.ToDouble(file.b[i]));
}
int o = 8;
int t = 1;
int s = 1024;
double d = 0.25;
double lambda = 532e-9;
double k = 2 * Math.PI / lambda;
double Hologram_sampling_interval = 7.4e-6;
double dx = Hologram_sampling_interval;
double dy = Hologram_sampling_interval;
double[,] image = new double[s, s];
for (int i = 0; i < obj_x.Count; i++)
{
obj_x[i] = obj_x[i] * t;
obj_y[i] = obj_y[i] * t;
obj_z[i] = obj_z[i] * 1;
}
List <double> Cut = obj_z.Distinct().ToList();
Cut.Sort();
double Ny = s;
double Nx = s;
double fx = 1 / (dx * Nx);
double fy = 1 / (dy * Ny);
double[,] x = new double[s, s];
double[,] y = new double[s, s];
Complex[,] O_image = new Complex[s, s];
Complex complex1 = new Complex(1, 1);
Complex[,] H = new Complex[s, s];
Complex[,] film = new Complex[s, s];
Complex[][] Hologram = new Complex[s][];
Complex[][] O_F;
int counter_y = 0;
for (int i = 0; i < s; i++)
{
// O_image[i]=new Complex[s];
// film[i] = new Complex[s];
//H[i] = new Complex[s];
Hologram[i] = new Complex[s];
int counter_x = 0;
if (counter_y == s / 2)
{
counter_y *= -1;
}
for (int j = 0; j < s; j++)
{
if (counter_x == s / 2)
{
counter_x *= -1;
}
x[i, j] = counter_x * fx;
y[i, j] = counter_y * fy;
counter_x++;
}
counter_y++;
}
double d1;
for (int i = 0; i < Cut.Count; i++)
{
//Complex[][] O_image2 = new Complex[s][];
// temp[0] = new List<double>(); //for every unique value of z ( Cut) make an object/ layer which should have R,G,B
for (int j = 0; j < obj_z.Count; j++)
{
if (Cut[i] == obj_z[j])
{
/* double[] temp = new double[6];
* temp[0] = obj_x[j];
* temp[1] = obj_y[j];
* temp[2] = obj_z[j];
*
* temp[3] = obj_r[j];
* temp[4] = obj_g[j];
* temp[5] = obj_b[j];
* O.AddRange(temp);
*/
O_image[Convert.ToInt32(obj_x[j]), Convert.ToInt32(obj_y[j])] = (Complex)obj_r[j];
}
}
d1 = d - Cut[i] * Hologram_sampling_interval / 2;
FourierTransform.FFT2(O_image, FourierTransform.Direction.Forward);
for (var p = 0; p < s; p++)
{ // fourier transform all values of x and y
Complex com1;
Complex com2;
for (var j = 0; j < s; j++)
{
com1 = Complex.Exp(new Complex(0, (-complex1.Im * Math.PI * lambda * d1 * (Math.Pow(x[p, j], 2) + Math.Pow(y[p, j], 2)))));
com2 = Complex.Exp(new Complex(0, (complex1.Im * k * d1)));
H[i, j] = Complex.Multiply(com1, com2);
}
}
for (int p = 0; p < s; p++)
{
for (int j = 0; j < s; j++)
{
film[i, j] = Complex.Multiply(O_image[i, j], H[i, j]);
}
}
FourierTransform.FFT2(film, FourierTransform.Direction.Backward);
for (int p = 0; p < Hologram.Length; p++)
{
for (int j = 0; j < Hologram[0].Length; j++)
{
Hologram[i][j] = Complex.Add(Hologram[p][j], film[p, j]);
}
}
} //end of Cut
double[,] phase_h = new double[s, s];
double max = -1.0;
for (int p = 0; p < Hologram.Length; p++)
{
for (int j = 0; j < Hologram[0].Length; j++)
{
phase_h[p, j] = Hologram[p][j].Phase + Math.PI;
if (Hologram[p][j].Phase > max)
{
max = Hologram[p][j].Phase;
}
}
}
double[][] phase_h_image = new double[s][];
for (int p = 0; p < Hologram.Length; p++)
{
phase_h_image[p] = new double[s];
for (int j = 0; j < Hologram[0].Length; j++)
{
double temp = 255 * phase_h[p, j] / max;
//phase_h_image[p][j] = System.Convert.ToByte(temp);
}
}
double d2 = d - o * 0.0001;
/*FresnelPropagation2
*
*
*
*
* */
for (var p = 0; p < s; p++)
{ // fourier transform all values of x and y
Complex com1;
Complex com2;
for (var j = 0; j < s; j++)
{
com1 = Complex.Exp(new Complex(0, (-complex1.Im * Math.PI * lambda * -d2 * (Math.Pow(x[p, j], 2) + Math.Pow(y[p, j], 2)))));
com2 = Complex.Exp(new Complex(0, (complex1.Im * k * -d2)));
H[p, j] = Complex.Multiply(com1, com2);
}
}
// O_F = FourierTransform2.FFT2(Hologram, "Forward");
/* for (int p = 0; p < O_F.Length; p++)
* {
*
* for (int j = 0; j < O_F[0].Length; j++)
* {
* Hologram[p][j] = Complex.Multiply(O_F[p][j], H[p][j]);
*
* }
*
* }
* /
* //Hologram = FourierTransform2.FFT2(film, "Backward");
*
*
*
*
*
* this.BackColor = Color.FromArgb(255, 102, 178);
*/
System.Console.WriteLine("END");
}// end of form
private void button3_Click(object sender, EventArgs e)
{
fft_image = Complex.CreateComplexArray(hpi.images[0]);
FourierTransform.FFT2(fft_image, FourierTransform.Direction.Forward);
plot(Tools.GetABS(fft_image));
}
