public static void assertEqualsRelative(ImageBase imgA, ImageBase imgB, double tolFrac) {
// if no specialized check exists, use a slower generalized approach
if (imgA instanceof ImageSingleBand) {
GImageSingleBand a = FactoryGImageSingleBand.wrap((ImageSingleBand) imgA);
GImageSingleBand b = FactoryGImageSingleBand.wrap((ImageSingleBand) imgB);
for (int y = 0; y < imgA.height; y++) {
for (int x = 0; x < imgA.width; x++) {
double valA = a.get(x, y).doubleValue();
double valB = b.get(x, y).doubleValue();
double difference = valA - valB;
double max = Math.max(Math.abs(valA), Math.abs(valB));
if (max == 0) max = 1;
if (Math.abs(difference) / max > tolFrac)
throw new RuntimeException(
"Values not equal at (" + x + "," + y + ") " + valA + " " + valB);
}
}
} else if (imgA instanceof MultiSpectral) {
MultiSpectral a = (MultiSpectral) imgA;
MultiSpectral b = (MultiSpectral) imgB;
if (a.getNumBands() != b.getNumBands())
throw new RuntimeException("Number of bands not equal");
for (int band = 0; band < a.getNumBands(); band++) {
assertEqualsRelative(a.getBand(band), b.getBand(band), tolFrac);
}
} else {
throw new RuntimeException("Unknown image type");
}
}
public static void printDiff(ImageSingleBand imgA, ImageSingleBand imgB) {
GImageSingleBand a = FactoryGImageSingleBand.wrap(imgA);
GImageSingleBand b = FactoryGImageSingleBand.wrap(imgB);
System.out.println("------- Difference -----------");
for (int y = 0; y < imgA.getHeight(); y++) {
for (int x = 0; x < imgA.getWidth(); x++) {
double diff = Math.abs(a.get(x, y).doubleValue() - b.get(x, y).doubleValue());
System.out.printf("%2d ", (int) diff);
}
System.out.println();
}
}
private void equalsTranVertical(
ImageSingleBand expected, ImageSingleBand found, int begin, int end, String quad) {
GImageSingleBand e = FactoryGImageSingleBand.wrap(expected);
GImageSingleBand f = FactoryGImageSingleBand.wrap(found);
for (int y = 0; y < expected.height; y++) {
// see if the inner image is identical to the naive implementation
// the border should be unmodified, zeros
if (y >= begin && y < end) {
for (int x = 0; x < expected.width; x++) {
assertEquals(
quad + " ( " + x + " , " + y + " )",
e.get(x, y).floatValue(),
f.get(x, y).floatValue(),
1e-4f);
}
} else {
for (int x = 0; x < expected.width; x++) {
assertTrue(
quad + " ( " + x + " , " + y + " ) 0 != " + f.get(x, y),
0 == f.get(x, y).floatValue());
}
}
}
}
private static void compareValues(
double tol, GImageSingleBand a, GImageSingleBand b, int x, int y) {
double normalizer = Math.abs(a.get(x, y).doubleValue()) + Math.abs(b.get(x, y).doubleValue());
if (normalizer < 1.0) normalizer = 1.0;
if (Math.abs(a.get(x, y).doubleValue() - b.get(x, y).doubleValue()) / normalizer > tol)
throw new RuntimeException(
"values not equal at (" + x + " " + y + ") " + a.get(x, y) + " " + b.get(x, y));
}
public static void assertEqualsInner(
ImageBase imgA, ImageBase imgB, double tol, int borderX, int borderY, boolean relative) {
// if no specialized check exists, use a slower generalized approach
if (imgA instanceof ImageSingleBand) {
GImageSingleBand a = FactoryGImageSingleBand.wrap((ImageSingleBand) imgA);
GImageSingleBand b = FactoryGImageSingleBand.wrap((ImageSingleBand) imgB);
for (int y = borderY; y < imgA.height - borderY; y++) {
for (int x = borderX; x < imgA.width - borderX; x++) {
double valA = a.get(x, y).doubleValue();
double valB = b.get(x, y).doubleValue();
double error = Math.abs(valA - valB);
if (relative) {
double denominator = Math.abs(valA) + Math.abs(valB);
if (denominator == 0) denominator = 1;
error /= denominator;
}
if (error > tol)
throw new RuntimeException(
"Values not equal at (" + x + "," + y + ") " + valA + " " + valB);
}
}
} else if (imgA instanceof MultiSpectral) {
MultiSpectral a = (MultiSpectral) imgA;
MultiSpectral b = (MultiSpectral) imgB;
if (a.getNumBands() != b.getNumBands())
throw new RuntimeException("Number of bands not equal");
for (int band = 0; band < a.getNumBands(); band++) {
assertEqualsInner(a.getBand(band), b.getBand(band), tol, borderX, borderY, relative);
}
} else {
throw new RuntimeException("Unknown image type");
}
}
public static void checkBorderZero(ImageSingleBand outputImage, int border) {
GImageSingleBand img = FactoryGImageSingleBand.wrap(outputImage);
for (int y = 0; y < img.getHeight(); y++) {
if (y >= border && y < img.getHeight() - border) continue;
for (int x = 0; x < img.getWidth(); x++) {
if (x >= border && x < img.getWidth() - border) continue;
if (img.get(x, y).intValue() != 0)
throw new RuntimeException("The border is not zero: " + x + " " + y);
}
}
}
public static void checkEquals(
BufferedImage imgA, MultiSpectral imgB, boolean boofcvBandOrder, float tol) {
if (imgA.getRaster() instanceof ByteInterleavedRaster
&& imgA.getType() != BufferedImage.TYPE_BYTE_INDEXED) {
ByteInterleavedRaster raster = (ByteInterleavedRaster) imgA.getRaster();
if (raster.getNumBands() == 1) {
GImageSingleBand band = FactoryGImageSingleBand.wrap(imgB.getBand(0));
int strideA = raster.getScanlineStride();
int offsetA = raster.getDataOffset(0) - raster.getPixelStride() + 1;
// handle a special case where the RGB conversion is screwed
for (int i = 0; i < imgA.getHeight(); i++) {
for (int j = 0; j < imgA.getWidth(); j++) {
double valB = band.get(j, i).doubleValue();
int valA = raster.getDataStorage()[offsetA + i * strideA + j];
valA &= 0xFF;
if (Math.abs(valA - valB) > tol)
throw new RuntimeException("Images are not equal: A = " + valA + " B = " + valB);
}
}
return;
}
}
int bandOrder[];
if (boofcvBandOrder) {
if (imgB.getNumBands() == 4) {
bandOrder = new int[] {1, 2, 3, 0};
} else {
bandOrder = new int[] {0, 1, 2};
}
} else {
if (imgA.getType() == BufferedImage.TYPE_INT_RGB) {
bandOrder = new int[] {0, 1, 2};
} else if (imgA.getType() == BufferedImage.TYPE_INT_BGR
|| imgA.getType() == BufferedImage.TYPE_3BYTE_BGR) {
bandOrder = new int[] {2, 1, 0};
} else if (imgA.getType() == BufferedImage.TYPE_4BYTE_ABGR) {
bandOrder = new int[] {0, 3, 2, 1};
} else if (imgA.getType() == BufferedImage.TYPE_INT_ARGB) {
bandOrder = new int[] {0, 1, 2, 3};
} else {
bandOrder = new int[] {0, 1, 2};
}
}
int expected[] = new int[4];
for (int y = 0; y < imgA.getHeight(); y++) {
for (int x = 0; x < imgA.getWidth(); x++) {
// getRGB() automatically converts the band order to ARGB
int rgb = imgA.getRGB(x, y);
expected[0] = ((rgb >>> 24) & 0xFF); // alpha
expected[1] = ((rgb >>> 16) & 0xFF); // red
expected[2] = ((rgb >>> 8) & 0xFF); // green
expected[3] = (rgb & 0xFF); // blue
if (imgB.getNumBands() == 4) {
for (int i = 0; i < 4; i++) {
double found = GeneralizedImageOps.get(imgB.getBand(bandOrder[i]), x, y);
if (Math.abs(Math.exp(expected[i] - found)) > tol) {
for (int j = 0; j < 4; j++) {
System.out.println(
expected[j] + " " + GeneralizedImageOps.get(imgB.getBand(bandOrder[j]), x, y));
}
throw new RuntimeException(
"Images are not equal: band - " + i + " type " + imgA.getType());
}
}
} else if (imgB.getNumBands() == 3) {
for (int i = 0; i < 3; i++) {
double found = GeneralizedImageOps.get(imgB.getBand(bandOrder[i]), x, y);
if (Math.abs(expected[i + 1] - found) > tol) {
for (int j = 0; j < 3; j++) {
System.out.println(
expected[j + 1]
+ " "
+ GeneralizedImageOps.get(imgB.getBand(bandOrder[j]), x, y));
}
throw new RuntimeException(
"Images are not equal: band - " + i + " type " + imgA.getType());
}
}
} else {
throw new RuntimeException("Unexpectd number of bands");
}
}
}
}