public BufferedImageMonochromeBitmapSource(System.Drawing.Bitmap image, bool rotated)
{
this.image = image;
blackPoint = 0x7F;
lastMethod = null;
lastArgument = 0;
iRotateSupported = rotated;
}
public BufferedImageMonochromeBitmapSource(System.Drawing.Bitmap image, bool rotated)
{
this.image = image;
blackPoint = 0x7F;
lastMethod = null;
lastArgument = 0;
iRotateSupported = rotated;
}
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];
float biasTowardsWhite = 1.0f;
if (method.Equals(BlackPointEstimationMethod.TWO_D_SAMPLING))
{
int minDimension = width < height?width:height;
int startI = height == minDimension?0:(height - width) >> 1;
int startJ = width == minDimension?0:(width - height) >> 1;
for (int n = 0; n < minDimension; n++)
{
int pixel = (iRotateSupported ? image.GetPixel(startI + n, startJ + n).ToArgb() : image.GetPixel(startJ + n, startI + n).ToArgb());
histogram[computeRGBLuminance(pixel) >> LUMINANCE_SHIFT]++;
}
}
else if (method.Equals(BlackPointEstimationMethod.ROW_SAMPLING))
{
if (argument < 0 || argument >= height)
{
throw new System.ArgumentException("Row is not within the image: " + argument);
}
biasTowardsWhite = 2.0f;
int[] rgbArray = getRGB(0, argument, width);
for (int x = 0; x < width; x++)
{
int l = computeRGBLuminance(rgbArray[x]);
histogram[l >> LUMINANCE_SHIFT]++;
}
}
else
{
//UPGRADE_TODO: The equivalent in .NET for method 'java.lang.Object.toString' may return a different value. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1043'"
throw new System.ArgumentException("Unknown method: " + method);
}
blackPoint = BlackPointEstimator.estimate(histogram) << LUMINANCE_SHIFT;
lastMethod = method;
lastArgument = argument;
}
}
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];
float biasTowardsWhite = 1.0f;
if (method.Equals(BlackPointEstimationMethod.TWO_D_SAMPLING))
{
int minDimension = width < height?width:height;
int startI = height == minDimension?0:(height - width) >> 1;
int startJ = width == minDimension?0:(width - height) >> 1;
for (int n = 0; n < minDimension; n++)
{
int pixel = (iRotateSupported ? image.GetPixel(startI + n, startJ + n).ToArgb() : image.GetPixel(startJ + n, startI + n).ToArgb());
histogram[computeRGBLuminance(pixel) >> LUMINANCE_SHIFT]++;
}
}
else if (method.Equals(BlackPointEstimationMethod.ROW_SAMPLING))
{
if (argument < 0 || argument >= height)
{
throw new System.ArgumentException("Row is not within the image: " + argument);
}
biasTowardsWhite = 2.0f;
int[] rgbArray = getRGB(0, argument, width);
for (int x = 0; x < width; x++)
{
int l = computeRGBLuminance(rgbArray[x]);
histogram[l >> LUMINANCE_SHIFT]++;
}
}
else
{
//UPGRADE_TODO: The equivalent in .NET for method 'java.lang.Object.toString' may return a different value. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1043'"
throw new System.ArgumentException("Unknown method: " + method);
}
blackPoint = BlackPointEstimator.estimate(histogram) << LUMINANCE_SHIFT;
lastMethod = method;
lastArgument = argument;
}
}
