private static short[][] makeHSImap() {
short[][] hue = new short[256][1];
short[][] sat = new short[256][1];
short[][] intens = new short[256][1];
for (int i = 0; i < 256; i++) {
hue[i][0] = (short) i;
sat[i][0] = 255;
intens[i][0] = (short) Math.round(255 * HSIImage.maxIntensity(i / 255.0, 1.0));
}
HSIImage hsiim = new HSIImage(hue, sat, intens);
RGBImage rgbim = hsiim.makeRGBImage();
short[][] red = rgbim.getRed();
short[][] green = rgbim.getGreen();
short[][] blue = rgbim.getBlue();
short[][] colormap = new short[256][3];
for (int i = 0; i < 256; i++) {
colormap[i][0] = red[i][0];
colormap[i][1] = green[i][0];
colormap[i][2] = blue[i][0];
}
return colormap;
}
/**
* Draw the histogram of the image on an IntensityImage with a given height and spacing between
* the bars.
*
* @param cumulative Set to true for cumulative histogram.
* @param height The heigth of the histogram.
* @param space The space between the bars of the histogram.
* @return An IntensityImage containing the image of the histogram.
*/
public IntensityImage drawHistogram(boolean cumulative, int height, int space) {
border = 30;
int width = 255 * (1 + space) + 2 * border;
RGBImage image = new RGBImage(height, width);
BufferedImage bim = image.makeBufferedImage();
Graphics g = bim.getGraphics();
draw(cumulative, g, 0, 0, height, space);
image.setBImage(bim);
return new IntensityImage(image);
}
/**
* A constructor that creates an IntensityImage from a RGBImage by letting the gray scale
* intensity be the average of the red, green and blue intensities.
*
* @param rgbImage Original image.
*/
public IntensityImage(RGBImage rgbImage) {
this();
int rows = rgbImage.getHeight();
int cols = rgbImage.getWidth();
data = new short[rows][cols];
short[][] red = rgbImage.getRed();
short[][] green = rgbImage.getGreen();
short[][] blue = rgbImage.getBlue();
int m;
for (int row = 0; row < rows; row++) {
for (int col = 0; col < cols; col++) {
m = (red[row][col] + green[row][col] + blue[row][col]) / 3;
data[row][col] = (short) m;
}
}
}
public void testGetNeighbor() {
RGBImage img = new RGBImage(3, 3);
img.setRGB(0, 0, 1, 1, 1);
img.setRGB(1, 0, 2, 2, 2);
img.setRGB(2, 0, 3, 3, 3);
img.setRGB(0, 1, 4, 4, 4);
img.setRGB(1, 1, 5, 5, 5);
img.setRGB(2, 1, 6, 6, 6);
img.setRGB(0, 2, 7, 7, 7);
img.setRGB(1, 2, 8, 8, 8);
img.setRGB(2, 2, 9, 9, 9);
try {
// Neighbor nbor=img.getNeighbor(1, 1, RGBColor.ALL_CHANNELS, 3);
// System.out.println(nbor);
// assertEquals(nbor.getValue(1, 1),5.0f);
} catch (Exception e) {
e.printStackTrace();
fail("Caught an exception");
}
}
/**
* Extracts data from this image into the given RGBImage
*
* @param image RGBImage that would receive pixel data
* @param destX x location within RGBImage into which the data will be written
* @param destY y location within RGBImage into which the data will be written
* @param x location within the source image
* @param y location within the source image
* @param width size of the image to extract from the source image
* @param height size of the image to extract from the source image
*/
public void toRGB(RGBImage image, int destX, int destY, int x, int y, int width, int height) {
getRGB(image.getRGB(), destX + destY * image.getWidth(), x, y, width, height);
}