public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
width = originalImage.Width;
height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
kernel = createKernel();
int white = 255;
int black = 0;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
int color = (new Color(originalImage.getRGB(i, j))).Red;
if (color == black)
{
convolve(i, j);
}
else
{
int alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
int rgb = ImageUtilities.colorToRGB(alpha, white, white, white);
filteredImage.setRGB(i, j, rgb);
}
}
}
return(filteredImage);
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
int alpha;
int red;
int green;
int blue;
int gray;
int width = originalImage.Width;
int height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
red = (new Color(originalImage.getRGB(i, j))).Red;
green = (new Color(originalImage.getRGB(i, j))).Green;
blue = (new Color(originalImage.getRGB(i, j))).Blue;
gray = (int)(0.21 * red + 0.71 * green + 0.07 * blue);
gray = ImageUtilities.colorToRGB(alpha, gray, gray, gray);
filteredImage.setRGB(i, j, gray);
}
}
return(filteredImage);
}
public virtual BufferedImage processImage(BufferedImage image)
{
double variance = sigma * sigma;
originalImage = image;
int width = originalImage.Width;
int height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
double a = 0.0;
double b = 0.0;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
while (a == 0.0)
{
a = new Random(1).NextDouble();
}
b = new Random(2).NextDouble();
double x = Math.Sqrt(-2 * Math.Log(a)) * Math.Cos(2 * Math.PI * b);
double noise = mean + Math.Sqrt(variance) * x;
//
//
int gray = (new Color(originalImage.getRGB(i, j))).Red;
int alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
double color = gray + noise;
if (color > 255)
{
color = 255;
}
if (color < 0)
{
color = 0;
}
int newColor = (int)Math.Round(color);
int rgb = ImageUtilities.colorToRGB(alpha, newColor, newColor, newColor);
filteredImage.setRGB(i, j, rgb);
} //j
} //i
return(filteredImage);
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
width = originalImage.Width;
height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
//JAVA TO C# CONVERTER NOTE: The following call to the 'RectangularArrays' helper class reproduces the rectangular array initialization that is automatic in Java:
//ORIGINAL LINE: imageMatrix = new int[width][height];
imageMatrix = RectangularArrays.ReturnRectangularIntArray(width, height);
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
imageMatrix[i][j] = (new Color(originalImage.getRGB(i, j))).Red;
}
}
mean = calculateMean();
@var = calculateVariance();
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
double normalizedPixel = 0;
double squareError = 0;
if (imageMatrix[i][j] > mean)
{
squareError = (imageMatrix[i][j] - mean) * (imageMatrix[i][j] - mean);
normalizedPixel = (GOAL_MEAN_Renamed + Math.Sqrt(((GOAL_VARIANCE_Renamed * squareError / @var))));
}
else
{
squareError = (imageMatrix[i][j] - mean) * (imageMatrix[i][j] - mean);
normalizedPixel = (GOAL_MEAN_Renamed - Math.Sqrt(((GOAL_VARIANCE_Renamed * squareError / @var))));
}
int alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
int rgb = (int)-normalizedPixel;
int color = ImageUtilities.colorToRGB(alpha, rgb, rgb, rgb);
filteredImage.setRGB(i, j, color);
}
}
return(filteredImage);
}
public void imageBegin(int w, int h, int bucketSize)
{
lock (lockObj)
{
if (image != null && w == image.getWidth() && h == image.getHeight())
{
// dull image if it has same resolution (75%)
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
int rgb = image.getRGB(x, y);
image.setRGB(x, y, ((uint)(rgb & 0x00FEFEFE) >> 1) + ((uint)(rgb & 0x00FCFCFC) >> 2));//>>>
}
}
}
else
{
// allocate new framebuffer
image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
// center
this.w = w;
this.h = h;
xo = yo = 0;
}
repaintCounter = NanoTime.Now;
repaint();
}
}
/// <summary>
/// This method scans image pixels until it finds the first black pixel (TODO: use foreground color which is black by default).
/// When it finds black pixel, it sets cropTopY and returns true. if it reaches end of image and does not find black pixels,
/// it sets endOfImage flag and returns false. </summary>
/// <returns> - returns true when black pixel is found and cropTopY value is changed, and false if cropTopY value is not changed </returns>
private bool findCropTopY()
{
for (int y = cropBottomY; y < imageWithChars.Height; y++) // why cropYDown? - for multiple lines of text using cropBottomY from previous line above; for first line its zero
{
for (int x = cropLeftX; x < imageWithChars.Width; x++) // scan starting from the previous left crop position - or it shoud be right???
{
if (imageWithChars.getRGB(x, y) == -16777216) // if its black rixel (also consider condition close to black or not white or different from background)
{
this.cropTopY = y; // save the current y coordiante
return(true); // and return true
}
}
}
endOfImage = true; //sets this flag if no black pixels are found
return(false); // and return false
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
width = originalImage.Width;
height = originalImage.Height;
//JAVA TO C# CONVERTER NOTE: The following call to the 'RectangularArrays' helper class reproduces the rectangular array initialization that is automatic in Java:
//ORIGINAL LINE: visited = new bool[width][height];
visited = RectangularArrays.ReturnRectangularBoolArray(width, height);
int name = 1;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
int color = (new Color(originalImage.getRGB(i, j))).Red;
if (color == 255)
{
visited[i][j] = true;
}
else
{
if (name > 3000)
{
return(originalImage);
}
BFS(i, j, name + "");
name++;
}
}
}
return(originalImage);
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
int width = originalImage.Width;
int height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
int radius = kernel.Length / 2;
if (normalize)
{
normalizeKernel();
}
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
double result = convolve(x, y, radius);
int gray = (int)Math.Round(result);
int alpha = (new Color(originalImage.getRGB(x, y))).Alpha;
int rgb = ImageUtilities.colorToRGB(alpha, gray, gray, gray);
filteredImage.setRGB(x, y, rgb);
}
}
return(filteredImage);
}
/// <summary>
/// This method reads the input image from the input from start pixel height
/// (y1) until it reads the first next row where all pixel are white by
/// height and return that value
/// </summary>
/// <param name="Img"> - input image that will be read </param>
/// <param name="y1"> - input start height pixel of image </param>
/// <returns> - returns the value of height when conditions are true </returns>
private static int trimLockdown(BufferedImage img, int y1)
{
for (int j = y1 + 1; j < img.Height; j++)
{
int counterWhite = 0;
for (int i = 0; i < img.Width; i++)
{
if (img.getRGB(i, j) == -1)
{
counterWhite++;
}
}
if (counterWhite == img.Width)
{
//this is a chek for dots over the letters i and j
//so they wont be missread as dots
if (j > (img.Height / 2))
{
return(j);
}
}
if (j == img.Height - 1)
{
return(j + 1);
}
}
return(0);
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
int width = originalImage.Width;
int height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
int[] arrayOfPixels;
int median;
int alpha;
int newColor;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
arrayOfPixels = getArrayOfPixels(i, j);
median = findMedian(arrayOfPixels);
alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
newColor = ImageUtilities.colorToRGB(alpha, median, median, median);
filteredImage.setRGB(i, j, newColor);
}
}
return(filteredImage);
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
int oldWidth = image.Width;
int oldHeight = image.Height;
int width = image.Width - 2 * radius;
int height = image.Height - 2 * radius;
filteredImage = new BufferedImage(width, height, originalImage.Type);
createKernel();
for (int i = radius; i < oldWidth - radius; i++)
{
for (int j = radius; j < oldHeight - radius; j++)
{
int alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
int newColor = getNewColor(i, j);
int rgb = ImageUtilities.colorToRGB(alpha, newColor, newColor, newColor);
int x = i - radius;
int y = j - radius;
filteredImage.setRGB(x, y, rgb);
}
}
return(filteredImage);
}
/// <summary>
/// Calculate the width histogram for single row. <br/>
/// Make the rectangle with: <br/>
/// width = width of the image<br/>
/// height = predicted height of letter<br/>
/// It scans this rectangle by width, start from left to right and finds all black
/// pixels in each column. Method returns array which length is width of the image.
/// Every element in array corresponds to number of black pixels in the column of
/// the rectangle. </summary>
/// <param name="image"> input image with multiple lines and letters </param>
/// <param name="row"> pixel position of the row. It should be center of the single row.
/// This number can be calculated by method findRowPixels </param>
/// <param name="letterHeight"> predicted letter size (above and below row) </param>
/// <returns> </returns>
public static int[] widthRowHistogram(BufferedImage image, int row, int letterHeight)
{
int width = image.Width;
int height = image.Height;
int color;
int black = 0;
int[] histogram = new int[width];
for (int i = 0; i < width; i++)
{
for (int j = row - (letterHeight / 2); j <= row + (letterHeight / 2); j++)
{
if (j < 0 || j >= height)
{
continue;
}
color = (new Color(image.getRGB(i, j))).Red;
if (color == black)
{
histogram[i]++;
}
}
}
return(histogram);
}
/// <summary>
/// Метод, предназначенный для вырезания части изображения и увеличения его в 4 раза
/// </summary>
/// <param name="bitmap"></param>
/// <param name="x1"></param>
/// <param name="y1"></param>
/// <param name="x2"></param>
/// <param name="y2"></param>
/// <param name="n"></param>
/// <returns></returns>
public static Bitmap FragmentCut(Bitmap bitmap, int x1 = 160, int y1 = 160, int x2 = 240, int y2 = 240, int n = 4)
{
BufferedImage img = new BufferedImage(bitmap);
int width = x2 - x1;
int height = y2 - y1;
BufferedImage newImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for (int i = x1, ik = 0; i < x2; i++, ik++)
{
for (int j = y1, jk = 0; j < y2; j++, jk++)
{
Color color = new Color(img.getRGB(i, j));
newImg.setRGB(ik, jk, color.getRGB());
}
}
BufferedImage resizeNewImg = new BufferedImage(width * n, height * n, BufferedImage.TYPE_INT_RGB);
for (int i = 0, i1 = 0; i < width; i++, i1 += 4)
{
for (int j = 0, j1 = 0; j < height; j++, j1 += 4)
{
Color color = new Color(newImg.getRGB(i, j));
for (int k = 0; k < n; k++)
{
resizeNewImg.setRGB(i1 + k, j1 + k, color.getRGB());
}
}
}
return(resizeNewImg.getBitmap());
}
/// <summary>
/// Метод, предназначенный для квантования изображения
/// </summary>
/// <param name="bitmap"></param>
/// <param name="n"></param>
/// <returns></returns>
public static Bitmap Quantization(Bitmap bitmap, int n)
{
BufferedImage img = new BufferedImage(bitmap);
Color color;
for (int i = 0; i < img.getWidth(); i++)
{
for (int j = 0; j < img.getHeight(); j++)
{
color = new Color(img.getRGB(i, j));
if (color.getRed() % n != 0 && color.getRed() != 0)
{
img.setRGB(i, j, new Color(newColor(color.getRed(), n), color.getGreen(), color.getBlue()).getRGB());
}
if (color.getBlue() % n != 0 && color.getBlue() != 0)
{
img.setRGB(i, j, new Color(color.getRed(), color.getGreen(), newColor(color.getBlue(), n)).getRGB());
}
if (color.getGreen() % n != 0 && color.getGreen() != 0)
{
img.setRGB(i, j, new Color(color.getRed(), newColor(color.getGreen(), n), color.getBlue()).getRGB());
}
}
}
return(img.getBitmap());
}
public virtual int letterThreshold(BufferedImage original, bool[][] matrix)
{
double sum = 0;
int count = 0;
for (int i = 0; i < original.Width; i++)
{
for (int j = 0; j < original.Height; j++)
{
if (matrix[i][j] == true)
{
int gray = (new Color(original.getRGB(i, j))).Red;
sum += gray;
count++;
}
}
}
if (count == 0)
{
return(0);
}
return((int)Math.Round((sum * 3) / (count * 2))); // 3 i 2 su plinkove konstnte
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
int width = originalImage.Width;
int height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
int[] histogram = imageHistogram(originalImage);
int totalNumberOfpixels = height * width;
int treshold = treshold(histogram, totalNumberOfpixels);
int black = 0;
int white = 255;
int alpha;
int gray;
int newColor;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
gray = (new Color(originalImage.getRGB(i, j))).Red;
alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
if (gray > treshold)
{
newColor = white;
}
else
{
newColor = black;
}
newColor = ImageUtilities.colorToRGB(alpha, newColor, newColor, newColor);
filteredImage.setRGB(i, j, newColor);
}
}
return(filteredImage);
}
/// <summary>
/// Crop the part of an image with a white rectangle
/// </summary>
/// <returns> A cropped image File </returns>
public virtual File crop(BufferedImage image)
{
// this will be coordinates of the upper left white pixel
int upperLeftCornerx = int.MaxValue;
int upperLeftCornery = int.MaxValue;
//this will be coordinates of the lower right white pixel
int lowerRightCornerx = int.MinValue;
int lowerRightCornery = int.MinValue;
//find the minimum and maximum white pixel coordinates
for (int i = 0; i < image.Width; i++)
{
for (int j = 0; j < image.Height; j++)
{
if (image.getRGB(i, j) == WHITE.RGB && (i < upperLeftCornerx && j < upperLeftCornery) || (i <= upperLeftCornerx && j < upperLeftCornery) || (i < upperLeftCornerx && j <= upperLeftCornery))
{
upperLeftCornerx = i;
upperLeftCornery = j;
}
if (image.getRGB(i, j) == WHITE.RGB && ((i > lowerRightCornerx && j >= lowerRightCornery) || (i >= lowerRightCornerx && j > lowerRightCornery) || (i > lowerRightCornerx && j >= lowerRightCornery)))
{
lowerRightCornerx = i;
lowerRightCornery = j;
}
}
}
//crop the image to the white rectangle size
BufferedImage croppedImage = image.getSubimage(upperLeftCornerx, upperLeftCornery, lowerRightCornerx - upperLeftCornerx, lowerRightCornery - upperLeftCornery);
//make a file from that cropped image
File cropFile = new File("croppedimage.png");
try
{
ImageIO.write(croppedImage, "png", cropFile);
}
catch (IOException ex)
{
//JAVA TO C# CONVERTER WARNING: The .NET Type.FullName property will not always yield results identical to the Java Class.getName method:
Logger.getLogger(typeof(OcrDemo).FullName).log(Level.SEVERE, null, ex);
}
return(cropFile);
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
int width = originalImage.Width;
int height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
int[] histogram = imageHistogram(originalImage);
int[] histogramCumulative = new int[histogram.Length];
histogramCumulative[0] = histogram[0];
for (int i = 1; i < histogramCumulative.Length; i++)
{
histogramCumulative[i] = histogramCumulative[i - 1] + histogram[i];
}
int G = 256;
int gray;
int alpha;
int newColor;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
gray = (new Color(originalImage.getRGB(i, j))).Red;
alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
newColor = (G - 1) * histogramCumulative[gray] / (width * height); //zaokruziti izbeci celobrojno deljenje
newColor = ImageUtilities.colorToRGB(alpha, newColor, newColor, newColor);
filteredImage.setRGB(i, j, newColor);
}
}
return(filteredImage);
}
public virtual double [][] createM(int i, int j)
{
//JAVA TO C# CONVERTER NOTE: The following call to the 'RectangularArrays' helper class reproduces the rectangular array initialization that is automatic in Java:
//ORIGINAL LINE: double[][] M = new double [N_Renamed][N_Renamed];
double[][] M = RectangularArrays.ReturnRectangularDoubleArray(N_Renamed, N_Renamed);
int xx = 0;
int yy = 0;
for (int x = i * N_Renamed; x < i * N_Renamed + N_Renamed; x++)
{
for (int y = j * N_Renamed; y < j * N_Renamed + N_Renamed; y++)
{
M[xx][yy] = (new Color(originalImage.getRGB(x, y))).Red - 128;
yy++;
}
xx++;
yy = 0;
}
return(M);
}
//mouse released//
private void jPanel2MouseReleased(MouseEvent evt)
{
currentX = evt.X;
currentY = evt.Y;
const double SCALE = 0.1;
BufferedImage bi = new BufferedImage(32, 32, BufferedImage.TYPE_BYTE_GRAY);
Graphics2D grph = (Graphics2D)bi.Graphics;
grph.scale(SCALE, SCALE);
grph.drawImage(canvas, 0, 0, null);
grph.dispose();
newPix = new double[32 * 32];
pixels = bi.getRGB(0, 0, 32, 32, pixels, 0, 32);
for (int i = 0; i < pixels.Length; i++)
{
newPix[i] = 255 - (pixels[i] & 0xff);
newPix[i] /= 255;
}
long start = DateTimeHelperClass.CurrentUnixTimeMillis();
network.Input = newPix;
network.calculate();
Console.WriteLine("Execution time: " + (DateTimeHelperClass.CurrentUnixTimeMillis() - start) + " milliseconds");
try
{
ImageIO.write(bi, "png", new File("number.png"));
}
catch (IOException e)
{
Console.WriteLine(e.ToString());
Console.Write(e.StackTrace);
}
double[] networkOutput = network.Output;
int maxNeuronIdx = Utils.maxIdx(networkOutput);
ClassificationResult max = new ClassificationResult(maxNeuronIdx, networkOutput[maxNeuronIdx]);
Console.WriteLine("New calculation:");
Console.WriteLine("Class: " + max.ClassIdx);
Console.WriteLine("Probability: " + max.NeuronOutput);
label.Text = Convert.ToString(max.ClassIdx);
}
public virtual int getNewColor(int x, int y)
{
if (!checkConditios(x, y))
{
return((new Color(originalImage.getRGB(x, y))).Red);
}
int size = 2 * radius + 1;
//JAVA TO C# CONVERTER NOTE: The following call to the 'RectangularArrays' helper class reproduces the rectangular array initialization that is automatic in Java:
//ORIGINAL LINE: double[][] matrix = new double [size][size];
double[][] matrix = RectangularArrays.ReturnRectangularDoubleArray(size, size);
int newI = 0;
int newJ = 0;
for (int i = x - radius; i <= x + radius; i++)
{
for (int j = y - radius; j <= y + radius; j++)
{
//System.out.println("size:" +size+", radius:"+radius+", x:"+x+",y:"+y+", i:"+i+",j:"+j+ ", newI:"+newI+"newJ:"+newJ);
int oldColor = (new Color(originalImage.getRGB(i, j))).Red;
matrix[newI][newJ] = oldColor * kernel[newI][newJ];
newJ++;
}
newI++;
newJ = 0;
}
double sum = 0;
for (int i = 0; i < matrix.Length; i++)
{
for (int j = 0; j < matrix[0].Length; j++)
{
sum = sum + matrix[i][j];
}
}
return((int)Math.Round(sum));
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
int width = originalImage.Width;
int height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
OtsuBinarizeFilter obf = new OtsuBinarizeFilter();
BufferedImage tempImage = obf.processImage(originalImage);
int gray;
int alpha;
int discreteColor;
int newColor;
int white = 255;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
gray = (new Color(originalImage.getRGB(i, j))).Red;
alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
discreteColor = (new Color(tempImage.getRGB(i, j))).Red;
if (discreteColor == white)
{
newColor = gray;
}
else
{
newColor = white;
}
newColor = ImageUtilities.colorToRGB(alpha, newColor, newColor, newColor);
filteredImage.setRGB(i, j, newColor);
}
}
return(filteredImage);
}
public virtual BufferedImage getUnsharpMask(BufferedImage originalImage, BufferedImage bluredImage)
{
int width = originalImage.Width;
int height = originalImage.Height;
BufferedImage unsharpMask = new BufferedImage(width, height, originalImage.Type);
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
int originalColor = (new Color(originalImage.getRGB(i, j))).Red;
int blurColor = (new Color(bluredImage.getRGB(i, j))).Red;
int alpha = (new Color(originalImage.getRGB(i, j))).Alpha;
int newColor = originalColor - blurColor;
int rgb = ImageUtilities.colorToRGB(alpha, newColor, newColor, newColor);
unsharpMask.setRGB(i, j, rgb);
}
}
return(unsharpMask);
}
/// <summary>
/// This method reads the image pixels until it reads the first black pixel
/// by height and then returns that value
/// </summary>
/// <param name="Img"> - input image that will be read </param>
/// <returns> - returns the value of height when conditions are true </returns>
private static int trimLockup(BufferedImage img)
{
for (int j = 0; j < img.Height; j++)
{
for (int i = 0; i < img.Width; i++)
{
if (img.getRGB(i, j) == -16777216)
{
return(j);
}
}
}
return(0);
}
/// <summary>
/// This method cleans input image by replacing all non black pixels with
/// white pixels TODO: some should be used here
/// </summary>
/// <param name="image"> - input image that will be cleaned </param>
/// <returns> - cleaned input image as BufferedImage </returns>
public static BufferedImage blackAndWhiteCleaning(BufferedImage image)
{
for (int j = 0; j < image.Height; j++)
{
for (int i = 0; i < image.Width; i++)
{
if (image.getRGB(i, j) != -16777216)
{
image.setRGB(i, j, -1);
}
}
}
return(image);
}
private void resampleFrameFile(Sector sector, BufferedImage srcImage, BufferedImage destImage, int frameNumber,
PixelTransformer pt)
{
int frameULX = pixelColumn(0, frameNumber, this.frameStructure.getPixelRowsPerFrame(),
this.frameStructure.getPolarFrames());
int frameULY = pixelRow(0, frameNumber, this.frameStructure.getPixelRowsPerFrame(),
this.frameStructure.getPolarFrames());
int width = destImage.getWidth();
int height = destImage.getHeight();
double deltaLon = (sector.getMaxLongitude().degrees - sector.getMinLongitude().degrees) / width;
double deltaLat = (sector.getMaxLatitude().degrees - sector.getMinLatitude().degrees) / height;
// unbundle these values that are used in the nested loop below -- its compute intensive enough...
double minLon = sector.getMinLongitude().degrees;
double minLat = sector.getMinLatitude().degrees;
double polarConstant = this.frameStructure.getPolarPixelConstant();
int srcWidth = srcImage.getWidth();
int srcHeight = srcImage.getHeight();
for (int y = 0; y < height; y++)
{
double lat = minLat + y * deltaLat;
for (int x = 0; x < width; x++)
{
double lon = minLon + x * deltaLon;
int pixelX = pt.latLon2X(lat, lon, polarConstant);
int pixelY = pt.latLon2Y(lat, lon, polarConstant);
int i = pixelX - frameULX;
int j = frameULY - pixelY;
if (i < 0 || i >= srcWidth || j < 0 || j >= srcHeight)
{
continue;
}
int color = srcImage.getRGB(i, j);
// Remove black trim known to be present in these maps....
if ((color & 0x00FFFFFF) == 0)
{
color = 0;
}
destImage.setRGB(x, height - 1 - y, color);
}
}
}
/// <summary>
/// Изменение размера изображения
/// </summary>
/// <param name="bitmap"></param>
/// <param name="n"></param>
/// <returns></returns>
public static Bitmap DecreaseImageResolution(Bitmap bitmap, int n)
{
BufferedImage img = new BufferedImage(bitmap);
BufferedImage newImg = new BufferedImage(bitmap.Width / n, bitmap.Height / n, BufferedImage.TYPE_INT_RGB);
for (int i = 0, ik = 0; ik < img.getWidth(null); i++, ik += n)
{
for (int j = 0, jk = 0; jk < img.getHeight(null); j++, jk += n)
{
Color color = new Color(img.getRGB(ik, jk));
newImg.setRGB(i, j, color.getRGB());
}
}
return(newImg.getBitmap());
}
private void createColorImageThreadTask(BufferedImage imageChunk, int mask, ArrayList <BufferedImage> resultList, int index)
{
BufferedImage colorImage = new BufferedImage(imageChunk.getWidth(),
imageChunk.getHeight(), imageChunk.getType());
for (int x = 0; x < imageChunk.getWidth(); x++)
{
for (int y = 0; y < imageChunk.getHeight(); y++)
{
int pixel = imageChunk.getRGB(x, y) & mask;
colorImage.setRGB(x, y, pixel);
}
}
resultList.Add(colorImage);
}
private void convolve(int i, int j)
{
for (int x = i - 2; x <= i + 2; x++)
{
for (int y = j - 2; y <= j + 2; y++)
{
if (x >= 0 && y >= 0 && x < width && y < height)
{
int black = 0;
int alpha = (new Color(originalImage.getRGB(x, y))).Alpha;
int rgb = ImageUtilities.colorToRGB(alpha, black, black, black);
filteredImage.setRGB(x, y, rgb);
}
}
}
}
public virtual BufferedImage processImage(BufferedImage image)
{
originalImage = image;
Attributes = image;
int width = originalImage.Width;
int height = originalImage.Height;
filteredImage = new BufferedImage(width, height, originalImage.Type);
int[][] filter1 = new int[][] { new int[] { -1, 0, 1 }, new int[] { -2, 0, 2 }, new int[] { -1, 0, 1 } };
int[][] filter2 = new int[][] { new int[] { 1, 2, 1 }, new int[] { 0, 0, 0 }, new int[] { -1, -2, -1 } };
for (int y = 1; y < height - 1; y++)
{
for (int x = 1; x < width - 1; x++)
{
// get 3-by-3 array of colors in neighborhood
//JAVA TO C# CONVERTER NOTE: The following call to the 'RectangularArrays' helper class reproduces the rectangular array initialization that is automatic in Java:
//ORIGINAL LINE: int[][] gray = new int[3][3];
int[][] gray = RectangularArrays.ReturnRectangularIntArray(3, 3);
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
gray[i][j] = (int)lum(new Color(originalImage.getRGB(x - 1 + i, y - 1 + j)));
}
}
// apply filter
int gray1 = 0, gray2 = 0;
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
gray1 += gray[i][j] * filter1[i][j];
gray2 += gray[i][j] * filter2[i][j];
}
}
// int magnitude = 255 - truncate(Math.abs(gray1) + Math.abs(gray2));
int magnitude = 255 - truncate((int)Math.Sqrt(gray1 * gray1 + gray2 * gray2));
Color grayscale = new Color(magnitude, magnitude, magnitude);
filteredImage.setRGB(x, y, grayscale.RGB);
}
}
return(filteredImage);
}