public static void testTargetFeaturesAgainstImages(
Vector<HaarFeature> features, Vector<IntegralImage> images) {
int numberOfTrue = 0;
int numberOfFalse = 0;
for (IntegralImage ii : images) {
float weightSum = 0.0f;
float sum = 0.0f;
for (HaarFeature hf : features) {
// HaarFeature hf = allFeatures.get(slimFeature.featureNumber);
// hf.threshold = slimFeature.threshold;
float v = hf.weight * ii.evaluateAsClassifier(hf);
sum += v;
weightSum += hf.weight;
}
boolean success = (sum >= weightSum * 0.5f);
// System.out.println("image " + ii.name + " is a " + success + " : " + sum + " > " +
// weightSum*0.5f);
if (success) {
numberOfTrue++;
} else {
numberOfFalse++;
}
}
System.out.println("*************");
System.out.println("true: " + numberOfTrue);
System.out.println("false: " + numberOfFalse);
int min = Math.min(numberOfFalse, numberOfTrue);
int max = Math.max(numberOfFalse, numberOfTrue);
float percentError = min * 100.0f / max;
System.out.println("percentError = " + percentError);
}
private static void loadGifsAtDirectoryIntoVector(Vector<IntegralImage> images, File directory) {
for (File file : directory.listFiles()) {
String fileName = file.getName();
String extension = "";
String firstTwoChars = fileName.substring(0, 2);
int i = fileName.lastIndexOf('.');
if (i > 0) {
extension = fileName.substring(i + 1);
}
if (!firstTwoChars.equals("._") && extension.equals("gif")) {
BufferedImage img = null;
try {
// System.out.println("file = " + file);
img = ImageIO.read(file);
ImageProcessor imageProcessor = new ByteProcessor(img);
IntegralImage ii = new IntegralImage(imageProcessor);
ii.name = fileName;
images.add(ii);
} catch (IOException e) {
}
}
}
}
public static float BoxIntegral(IntegralImage img, int row, int col, int rows, int cols) {
int height = img.getHeight();
int width = img.getWidth();
// The subtraction by one for row/col is because row/col is inclusive.
int r1 = Math.min(row, height) - 1;
int c1 = Math.min(col, width) - 1;
int r2 = Math.min(row + rows, height) - 1;
int c2 = Math.min(col + cols, width) - 1;
float A = (r1 >= 0 && c1 >= 0) ? img.getValue(c1, r1) : 0;
float B = (r1 >= 0 && c2 >= 0) ? img.getValue(c2, r1) : 0;
float C = (r2 >= 0 && c1 >= 0) ? img.getValue(c1, r2) : 0;
float D = (r2 >= 0 && c2 >= 0) ? img.getValue(c2, r2) : 0;
// System.out.println("height = " + height + ", width = " + width);
// System.out.println("c1 = " + c1 + ", c2 = " + c2 + ", r1 = " + r1 + ", r2 = " + r2);
// System.out.println("A = " + A + ", B = " + B + ", C = " + C + ", D = " + D);
return Math.max(0F, A - B - C + D);
}
