|
public static FromRGB ( |
||
| rgb | Source color in RGB color space. | |
| return | ||
private unsafe void ProcessImage(UnmanagedImage image)
{
this.CheckSourceFormat(image.PixelFormat);
int width = image.Width;
int height = image.Height;
this.pixels = this.pixelsWithoutBlack = 0;
int[] numArray = new int[0x100];
int[] numArray2 = new int[0x100];
int[] numArray3 = new int[0x100];
int[] numArray4 = new int[0x100];
int[] numArray5 = new int[0x100];
int[] numArray6 = new int[0x100];
RGB rgb = new RGB();
YCbCr ycbcr = new YCbCr();
int num3 = (image.PixelFormat == PixelFormat.Format24bppRgb) ? 3 : 4;
int num4 = image.Stride - (width * num3);
byte *numPtr = (byte *)image.ImageData.ToPointer();
for (int i = 0; i < height; i++)
{
int num6 = 0;
while (num6 < width)
{
rgb.Red = numPtr[2];
rgb.Green = numPtr[1];
rgb.Blue = numPtr[0];
YCbCr.FromRGB(rgb, ycbcr);
numArray[(int)(ycbcr.Y * 255.0)]++;
numArray2[(int)((ycbcr.Cb + 0.5) * 255.0)]++;
numArray3[(int)((ycbcr.Cr + 0.5) * 255.0)]++;
this.pixels++;
if (((ycbcr.Y != 0.0) || (ycbcr.Cb != 0.0)) || (ycbcr.Cr != 0.0))
{
numArray4[(int)(ycbcr.Y * 255.0)]++;
numArray5[(int)((ycbcr.Cb + 0.5) * 255.0)]++;
numArray6[(int)((ycbcr.Cr + 0.5) * 255.0)]++;
this.pixelsWithoutBlack++;
}
num6++;
numPtr += num3;
}
numPtr += num4;
}
this.yHistogram = new ContinuousHistogram(numArray, new DoubleRange(0.0, 1.0));
this.cbHistogram = new ContinuousHistogram(numArray2, new DoubleRange(-0.5, 0.5));
this.crHistogram = new ContinuousHistogram(numArray3, new DoubleRange(-0.5, 0.5));
this.yHistogramWithoutBlack = new ContinuousHistogram(numArray4, new DoubleRange(0.0, 1.0));
this.cbHistogramWithoutBlack = new ContinuousHistogram(numArray5, new DoubleRange(-0.5, 0.5));
this.crHistogramWithoutBlack = new ContinuousHistogram(numArray6, new DoubleRange(-0.5, 0.5));
}
private unsafe void ProcessImage(UnmanagedImage image, byte *mask, int maskLineSize)
{
int width = image.Width;
int height = image.Height;
pixels = (pixelsWithoutBlack = 0);
int[] array = new int[256];
int[] array2 = new int[256];
int[] array3 = new int[256];
int[] array4 = new int[256];
int[] array5 = new int[256];
int[] array6 = new int[256];
RGB rGB = new RGB();
YCbCr yCbCr = new YCbCr();
int num = (image.PixelFormat == PixelFormat.Format24bppRgb) ? 3 : 4;
int num2 = image.Stride - width * num;
int num3 = maskLineSize - width;
byte *ptr = (byte *)image.ImageData.ToPointer();
if (mask == null)
{
for (int i = 0; i < height; i++)
{
int num4 = 0;
while (num4 < width)
{
rGB.Red = ptr[2];
rGB.Green = ptr[1];
rGB.Blue = *ptr;
YCbCr.FromRGB(rGB, yCbCr);
array[(int)(yCbCr.Y * 255f)]++;
array2[(int)(((double)yCbCr.Cb + 0.5) * 255.0)]++;
array3[(int)(((double)yCbCr.Cr + 0.5) * 255.0)]++;
pixels++;
if ((double)yCbCr.Y != 0.0 || (double)yCbCr.Cb != 0.0 || (double)yCbCr.Cr != 0.0)
{
array4[(int)(yCbCr.Y * 255f)]++;
array5[(int)(((double)yCbCr.Cb + 0.5) * 255.0)]++;
array6[(int)(((double)yCbCr.Cr + 0.5) * 255.0)]++;
pixelsWithoutBlack++;
}
num4++;
ptr += num;
}
ptr += num2;
}
}
else
{
for (int j = 0; j < height; j++)
{
int num5 = 0;
while (num5 < width)
{
if (*mask != 0)
{
rGB.Red = ptr[2];
rGB.Green = ptr[1];
rGB.Blue = *ptr;
YCbCr.FromRGB(rGB, yCbCr);
array[(int)(yCbCr.Y * 255f)]++;
array2[(int)(((double)yCbCr.Cb + 0.5) * 255.0)]++;
array3[(int)(((double)yCbCr.Cr + 0.5) * 255.0)]++;
pixels++;
if ((double)yCbCr.Y != 0.0 || (double)yCbCr.Cb != 0.0 || (double)yCbCr.Cr != 0.0)
{
array4[(int)(yCbCr.Y * 255f)]++;
array5[(int)(((double)yCbCr.Cb + 0.5) * 255.0)]++;
array6[(int)(((double)yCbCr.Cr + 0.5) * 255.0)]++;
pixelsWithoutBlack++;
}
}
num5++;
ptr += num;
mask++;
}
ptr += num2;
mask += num3;
}
}
yHistogram = new ContinuousHistogram(array, new Range(0f, 1f));
cbHistogram = new ContinuousHistogram(array2, new Range(-0.5f, 0.5f));
crHistogram = new ContinuousHistogram(array3, new Range(-0.5f, 0.5f));
yHistogramWithoutBlack = new ContinuousHistogram(array4, new Range(0f, 1f));
cbHistogramWithoutBlack = new ContinuousHistogram(array5, new Range(-0.5f, 0.5f));
crHistogramWithoutBlack = new ContinuousHistogram(array6, new Range(-0.5f, 0.5f));
}
