public void estimateBlackPoint(BlackPointEstimationMethod method, int argument)
{
if (!method.Equals(lastMethod) || argument != lastArgument)
{
int width = getWidth();
int height = getHeight();
int[] histogram = new int[LUMINANCE_BUCKETS];
if (method.Equals(BlackPointEstimationMethod.TWO_D_SAMPLING))
{
int minDimension = width < height ? width : height;
int startX = (width - minDimension) >> 1;
int startY = (height - minDimension) >> 1;
for (int n = 0; n < minDimension; n++)
{
int luminance = getLuminance(startX + n, startY + n);
histogram[luminance >> LUMINANCE_SHIFT]++;
}
}
else if (method.Equals(BlackPointEstimationMethod.ROW_SAMPLING))
{
if (argument < 0 || argument >= height)
{
throw new Exception("Row is not within the image: " + argument);
}
initLuminances();
luminances = getLuminanceRow(argument, luminances);
for (int x = 0; x < width; x++)
{
histogram[luminances[x] >> LUMINANCE_SHIFT]++;
}
}
else
{
throw new Exception("Unknown method: " + method);
}
blackPoint = BlackPointEstimator.estimate(histogram) << LUMINANCE_SHIFT;
lastMethod = method;
lastArgument = argument;
}
}
protected BaseMonochromeBitmapSource()
{
blackPoint = 0x7F;
lastMethod = null;
lastArgument = 0;
}
protected BaseMonochromeBitmapSource() {
blackPoint = 0x7F;
lastMethod = null;
lastArgument = 0;
}
public void estimateBlackPoint(BlackPointEstimationMethod method, int argument){
if (!method.Equals(lastMethod) || argument != lastArgument) {
int width = getWidth();
int height = getHeight();
int[] histogram = new int[LUMINANCE_BUCKETS];
if (method.Equals(BlackPointEstimationMethod.TWO_D_SAMPLING)) {
int minDimension = width < height ? width : height;
int startX = (width - minDimension) >> 1;
int startY = (height - minDimension) >> 1;
for (int n = 0; n < minDimension; n++) {
int luminance = getLuminance(startX + n, startY + n);
histogram[luminance >> LUMINANCE_SHIFT]++;
}
} else if (method.Equals(BlackPointEstimationMethod.ROW_SAMPLING)) {
if (argument < 0 || argument >= height) {
throw new Exception("Row is not within the image: " + argument);
}
initLuminances();
luminances = getLuminanceRow(argument, luminances);
for (int x = 0; x < width; x++) {
histogram[luminances[x] >> LUMINANCE_SHIFT]++;
}
} else {
throw new Exception("Unknown method: " + method);
}
blackPoint = BlackPointEstimator.estimate(histogram) << LUMINANCE_SHIFT;
lastMethod = method;
lastArgument = argument;
}
}
