/// <summary>
/// Gray process.
/// </summary>
/// <param name="src">Source image.</param>
/// <returns></returns>
public static WriteableBitmap GrayProcess(this WriteableBitmap src) ////1 灰度化处理
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap grayImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
for (int i = 0; i < temp.Length; i += 4)
{
byte tempByte = (byte)((int)(temp[i] * 0.114 + temp[i + 1] * 0.587 + temp[i + 2] * 0.299));
temp[i] = tempByte;
temp[i + 1] = tempByte;
temp[i + 2] = tempByte;
}
Stream sTemp = grayImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(grayImage);
}
else
{
return(null);
}
}
/// <summary>
/// Mosaic process.
/// </summary>
/// <param name="src">The source image.</param>
/// <param name="v">The threshould to control the result of mosaic process.</param>
/// <returns></returns>
public static WriteableBitmap MosaicProcess(this WriteableBitmap src, int v)////图像马赛克效果
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap srcImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
int dR = 0;
int dG = 0;
int dB = 0;
int dstX = 0;
int dstY = 0;
dR = tempMask[2];
dG = tempMask[1];
dB = tempMask[0];
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
dstX = i;
dstY = j;
if (j % v == 0)
{
if (i % v == 0)
{
dB = tempMask[dstX * 4 + dstY * w * 4];
dG = tempMask[dstX * 4 + 1 + dstY * w * 4];
dR = tempMask[dstX * 4 + 2 + dstY * w * 4];
}
else
{
temp[dstX * 4 + dstY * w * 4] = (byte)dB;
temp[dstX * 4 + 1 + dstY * w * 4] = (byte)dG;
temp[dstX * 4 + 2 + dstY * w * 4] = (byte)dR;
}
}
else
{
temp[dstX * 4 + dstY * w * 4] = temp[dstX * 4 + (dstY - 1) * w * 4];
temp[dstX * 4 + 1 + dstY * w * 4] = temp[dstX * 4 + 1 + (dstY - 1) * w * 4];
temp[dstX * 4 + 2 + dstY * w * 4] = temp[dstX * 4 + 2 + (dstY - 1) * w * 4];
}
}
}
Stream sTemp = srcImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(srcImage);
}
else
{
return(null);
}
}
/*
* public static WriteableBitmap WriteableBitmapBlur(this WriteableBitmap writeableBitmapOld, int kernelWidth, int kernelHeight)
* {
* var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(writeableBitmapOld);
* WriteableBitmapConvolutionExtensions.GaussianBlur(cloneWriteableBitmap, kernelWidth, kernelHeight);
* cloneWriteableBitmap.Invalidate();
* return cloneWriteableBitmap;
* }
*/
/// <summary>
/// 高斯滤波
/// </summary>
/// <param name="writeableBitmapOld"></param>
/// <param name="radius">0 to 100</param>
/// <param name="sigma">0 to 30</param>
/// <returns></returns>
public static WriteableBitmap WriteableBitmapBlur(this WriteableBitmap writeableBitmapOld, int radius, double sigma)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(writeableBitmapOld);
var writeableBitmap = WriteableBitmapConvolutionExtensions.GaussFilter(cloneWriteableBitmap, radius, sigma);
writeableBitmap.Invalidate();
return(writeableBitmap);
}
public static WriteableBitmap WriteableBitmapBlur(this WriteableBitmap writeableBitmapOld)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(writeableBitmapOld);
WriteableBitmapConvolutionExtensions.GaussianBlur(cloneWriteableBitmap);
cloneWriteableBitmap.Invalidate();
return(cloneWriteableBitmap);
}
/// <summary>
/// Sun light process.
/// </summary>
/// <param name="src">The source image.</param>
/// <param name="A">X location of light source.</param>
/// <param name="B">Y location of light source.</param>
/// <param name="thresould">Light intensity value.</param>
/// <returns></returns>
public static WriteableBitmap SunlightProcess(this WriteableBitmap src, int X, int Y, float thresould)////41图像光照函数
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap srcImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
double b = 0, g = 0, r = 0;
if (X >= w || Y >= h || X < 0 || Y < 0)
{
X = w / 2;
Y = h / 2;
}
Point Cen = new Point(X, Y);
int R = Math.Min(X, Y);
float curR = 0;
float pixelValue = 0;
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
b = tempMask[i * 4 + j * w * 4];
g = tempMask[i * 4 + 1 + j * w * 4];
r = tempMask[i * 4 + 2 + j * w * 4];
curR = (float)Math.Sqrt(Math.Pow((i - Cen.X), 2) + Math.Pow((j - Cen.Y), 2));
if (curR < R)
{
pixelValue = thresould * (1.0f - curR / R);
b = b + pixelValue;
g = g + pixelValue;
r = r + pixelValue;
temp[i * 4 + j * w * 4] = (byte)(b > 0 ? (b < 255 ? b : 255) : 0);
temp[i * 4 + 1 + j * w * 4] = (byte)(g > 0 ? (g < 255 ? g : 255) : 0);
temp[i * 4 + 2 + j * w * 4] = (byte)(r > 0 ? (r < 255 ? r : 255) : 0);
b = 0; g = 0; r = 0;
}
}
}
Stream sTemp = srcImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(srcImage);
}
else
{
return(null);
}
}
public static WriteableBitmap WriteableBitmapBlur(this WriteableBitmap writeableBitmapOld, int x, int y)
{
if ((x & 1) == 0 || (y & 1) == 0)
{
return(null);
}
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(writeableBitmapOld);
WriteableBitmapConvolutionExtensions.BoxBlur(cloneWriteableBitmap, x, y);
cloneWriteableBitmap.Invalidate();
return(cloneWriteableBitmap);
}
public YouTubeFlvToMp3OrAac(string name, IRandomAccessStream ias)
{
this._name = name;
_warnings = new List <string>();
if (ias == null)
{
return;
}
_fs = WriteableBitmapExpansion.ConvertIRandomAccessStreamToMemoryStream(ias);
_fileOffset = 0;
_fileLength = _fs.Length;
//ExtractStreams();
}
/**
* Extracts image pixels into byte array "pixels"
*/
protected void GetImagePixels(IRandomAccessStream iRandomAccessStream)
{
/*Point pointWH = await WriteableBitmapExpansion.GetPixelWidthAndHeight(iRandomAccessStream);
* int w = (int)pointWH.X;
* int h = (int)pointWH.Y;*/
int count = 0;
byte[] tempByte = null;
/*
* //进行统一尺寸的格式压缩
* if ((w != width)
|| (h != height)
|| )
||{
|| var bytes = await WriteableBitmapExpansion.ResizeBytes(iRandomAccessStream, width, height, BitmapInterpolationMode.Cubic);
|| pixels = new Byte[3 * width * height];
|| pointWH = new Point(width, height);
|| tempByte = bytes;
||}
||else
||{
|| pointWH = await WriteableBitmapExpansion.GetPixelWidthAndHeight(imageIAStream);
|| pixels = new Byte[3 * (int)pointWH.X * (int)pointWH.Y];
|| tempByte = await WriteableBitmapExpansion.WriteableBitmapToBytes(imageIAStream);
||}
*/
pixels = new Byte[3 * (int)width * (int)height];
/*tempByte = await WriteableBitmapExpansion.WriteableBitmapToBytes(imageIAStream);*/
Stream inputStream = WindowsRuntimeStreamExtensions.AsStreamForRead(imageIAStream.GetInputStreamAt(0));
tempByte = inputStream.ConvertStreamTobyte();
for (int th = 0; th < height; th++)
{
for (int tw = 0; tw < width; tw++)
{
Color color = WriteableBitmapExpansion.GetPixel(tempByte, Convert.ToInt32(width), tw, th);
pixels[count] = color.R;
count++;
pixels[count] = color.G;
count++;
pixels[count] = color.B;
count++;
}
}
}
private async void InitFlvToMp3OrAac(StorageFile storageFile, bool isFileSavePicker)
{
this.storageFile = storageFile;
//this._name = Path.GetFileNameWithoutExtension(storageFile.Name);
this._name = storageFile.DisplayName;
this.isFileSavePicker = isFileSavePicker;
//var ias = storageFile.OpenAsync(FileAccessMode.Read).GetResults();
var ias = await storageFile.OpenAsync(FileAccessMode.Read);
_warnings = new List <string>();
if (ias == null)
{
return;
}
_fs = WriteableBitmapExpansion.ConvertIRandomAccessStreamToMemoryStream(ias);
_fileOffset = 0;
_fileLength = _fs.Length;
//ExtractStreams();
}
private async void MoveOutControlBlankPage_Loaded(object sender, RoutedEventArgs e)
{
RandomAccessStreamReference rass = RandomAccessStreamReference.CreateFromUri(new Uri("http://ww1.sinaimg.cn/bmiddle/643be833jw1e4nzv4dc12j20dc0hsq4g.jpg", UriKind.RelativeOrAbsolute));
IRandomAccessStreamWithContentType streamRandom = await rass.OpenReadAsync();
var cloneStream = streamRandom.CloneStream();
wb = new WriteableBitmap(1, 1);
//wb = await (new WriteableBitmap(1, 1).FromStream(streamRandom));
await wb.SetSourceAsync(streamRandom);
//this.image.Source = wb;
wbOriginal = WriteableBitmapExpansion.CopyWriteableBitmap(wb);
var bi = new BitmapImage();
await bi.SetSourceAsync(cloneStream);
this.imageOriginal.Source = bi;
this.image.Source = BlurEffect.WriteableBitmapBlur(wb, Convert.ToInt32(sliderRadius.Value), sliderSigma.Value);
}
/// <summary>
/// Redeye remove Process.
/// </summary>
/// <param name="src">The source image.</param>
/// <returns></returns>
public static WriteableBitmap RedeyeRemoveProcess(this WriteableBitmap src)////红眼去除
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap srcImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
int r, g, b;
int Rc, Gc, Bc;
for (int i = 0; i < temp.Length; i += 4)
{
b = tempMask[i];
g = tempMask[i + 1];
r = tempMask[i + 2];
if (r > (int)(g + b))//这里 只是简单的判断一下红眼像素只为说明红眼去除算法，实际上要使用一定的红眼判断算法决策
{
Rc = (int)((g + b) / 2);
Gc = (int)((g + Rc) / 2);
Bc = (int)((b + Rc) / 2);
temp[i] = (byte)Bc;
temp[i + 1] = (byte)Gc;
temp[i + 2] = (byte)Rc;
}
}
Stream sTemp = srcImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(srcImage);
}
else
{
return(null);
}
}
/// <summary>
/// Wallis sharpen process.
/// </summary>
/// <param name="src">The source image.</param>
/// <returns></returns>
public static WriteableBitmap WallisSharpen(this WriteableBitmap src)////37Wallis锐化函数
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap sharpenImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
double b = 0, g = 0, r = 0, srR = 0, srG = 0, srB = 0;
for (int j = 1; j < h - 1; j++)
{
for (int i = 4; i < w * 4 - 4; i += 4)
{
srB = tempMask[i + j * w * 4];
srG = tempMask[i + 1 + j * w * 4];
srR = tempMask[i + 2 + j * w * 4];
b = 46 * Math.Abs(5 * Math.Log(srB + 1) - Math.Log(tempMask[i - 4 + j * w * 4] + 1) - Math.Log(tempMask[i + 4 + j * w * 4] + 1) - Math.Log(tempMask[i + (j - 1) * w * 4] + 1) - Math.Log(tempMask[i + (j + 1) * w * 4] + 1));
g = 46 * Math.Abs(5 * Math.Log(srG + 1) - Math.Log(tempMask[i - 4 + 1 + j * w * 4] + 1) - Math.Log(tempMask[i + 4 + 1 + j * w * 4] + 1) - Math.Log(tempMask[i + 1 + (j - 1) * w * 4] + 1) - Math.Log(tempMask[i + 1 + (j + 1) * w * 4] + 1));
r = 46 * Math.Abs(5 * Math.Log(srR + 1) - Math.Log(tempMask[i - 4 + 2 + j * w * 4] + 1) - Math.Log(tempMask[i + 4 + 2 + j * w * 4] + 1) - Math.Log(tempMask[i + 2 + (j - 1) * w * 4] + 1) - Math.Log(tempMask[i + 2 + (j + 1) * w * 4] + 1));
temp[i + j * w * 4] = (byte)(b > 0 ? (b < 255 ? b : 255) : 0);
temp[i + 1 + j * w * 4] = (byte)(g > 0 ? (g < 255 ? g : 255) : 0);
temp[i + 2 + j * w * 4] = (byte)(r > 0 ? (r < 255 ? r : 255) : 0);
b = 0; g = 0; r = 0; srR = 0; srG = 0; srB = 0;
}
}
Stream sTemp = sharpenImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(sharpenImage);
}
else
{
return(null);
}
}
/// <summary>
/// Atomization process.
/// </summary>
/// <param name="src">The source image.</param>
/// <param name="v">The threshould to control the effect of atomization.</param>
/// <returns></returns>
public static WriteableBitmap AtomizationProcess(this WriteableBitmap src, int v)////45图像雾化
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap srcImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
Random ran = new Random();
int k = 0;
int dx = 0;
int dy = 0;
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
k = ran.Next(v);
dx = (i + k) >= w ? w - 1 : (i + k);
dy = (j + k) >= h ? h - 1 : (j + k);
temp[i * 4 + j * w * 4] = (byte)tempMask[dx * 4 + dy * w * 4];
temp[i * 4 + 1 + j * w * 4] = (byte)tempMask[dx * 4 + 1 + dy * w * 4];
temp[i * 4 + 2 + j * w * 4] = (byte)tempMask[dx * 4 + 2 + dy * w * 4];
}
}
Stream sTemp = srcImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(srcImage);
}
else
{
return(null);
}
}
/// <summary>
/// Entropy max method of image segmention.
/// </summary>
/// <param name="src">The source iamge.</param>
/// <returns></returns>
public static WriteableBitmap EntropymaxThSegment(this WriteableBitmap src) ////一维熵最大法阈值分割
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap dstImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
//定义灰度图像信息存储变量
int[] srcData = new int[w * h];
//定义阈值变量
int Th = 0;
//定义直方图存储变量
int[] histogram = new int[256];
//定义熵值变量
double Ht = 0.0;
double Hl = 0.0;
double sigma = 0.0;
//定义灰度最值变量
int max = 0;
int min = 255;
//定义临时变量
double t = 0.0, pt = 0.0, tempMax = 0.0;
int tempV = 0;
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
tempV = (int)((double)tempMask[i * 4 + j * w * 4] * 0.114 + (double)tempMask[i * 4 + 1 + j * w * 4] * 0.587 + (double)tempMask[i * 4 + 2 + j * w * 4] * 0.299);
srcData[i + j * w] = tempV;
histogram[tempV]++;
if (tempV > max)
{
max = tempV;
}
if (tempV < min)
{
min = tempV;
}
}
}
for (int i = min; i < max; i++)
{
t = (double)((double)histogram[i] / (double)(w * h));
if (t > 0.00000001)
{
Hl += -t *Math.Log10(t);
}
else
{
continue;
}
}
for (int i = min; i < max; i++)
{
t = (double)((double)histogram[i] / (double)(w * h));
pt += t;
if (t > 0.00000001)
{
Ht += -t *Math.Log10(t);
sigma = Math.Log10(pt * (1 - pt)) * Ht / pt + (Hl - Ht) / (1 - pt);
if (sigma > tempMax)
{
tempMax = (int)sigma;
Th = i;
}
}
else
{
continue;
}
}
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
temp[i * 4 + j * w * 4] = temp[i * 4 + 1 + j * w * 4] = temp[i * 4 + 2 + j * w * 4] = (byte)(srcData[i + j * w] < Th ? 0 : 255);
}
}
Stream sTemp = dstImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(dstImage);
}
else
{
return(null);
}
}
/// <summary>
/// P-Parameter method of image segmention.
/// </summary>
/// <param name="src">The source image.</param>
/// <param name="P">The ratio of object, from 0 to 1.</param>
/// <returns></returns>
public static WriteableBitmap PParameterThSegment(this WriteableBitmap src, double P) ////P参数法阈值分割
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap dstImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
//定义灰度图像信息存储变量
int[] srcData = new int[w * h];
//定义背景和目标像素个数变量
int C1 = 0, C2 = 0;
//定义阈值变量
int Th = 0;
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
srcData[i + j * w] = (int)((double)tempMask[i * 4 + j * w * 4] * 0.114 + (double)tempMask[i * 4 + 1 + j * w * 4] * 0.587 + (double)tempMask[i * 4 + 2 + j * w * 4] * 0.299);
}
}
for (int T = 0; T <= 255; T++)
{
for (int i = 0; i < srcData.Length; i++)
{
if (srcData[i] > T)
{
C1++;
}
else
{
C2++;
}
}
double t = Math.Abs((double)((double)C1 / ((double)C1 + (double)C2)) - P);
if (t < 0.01)
{
Th = T;
break;
}
C1 = 0;
C2 = 0;
}
for (int j = 0; j < h; j++)
{
for (int i = 0; i < w; i++)
{
temp[i * 4 + j * w * 4] = temp[i * 4 + 1 + j * w * 4] = temp[i * 4 + 2 + j * w * 4] = (byte)(srcData[i + j * w] < Th ? 0 : 255);
}
}
Stream sTemp = dstImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(dstImage);
}
else
{
return(null);
}
}
/// <summary>
/// Motion blur process.
/// </summary>
/// <param name="src">The source image.</param>
/// <param name="k">The offset of motion, from 0 to 200.</param>
/// <param name="direction">The direction of motion, x:1, y:2.</param>
/// <returns></returns>
public static WriteableBitmap MotionblurProcess(WriteableBitmap src, int k, int direction)////运动模糊处理
{
if (src != null)
{
var cloneWriteableBitmap = WriteableBitmapExpansion.CopyWriteableBitmap(src);
int w = cloneWriteableBitmap.PixelWidth;
int h = cloneWriteableBitmap.PixelHeight;
WriteableBitmap srcImage = new WriteableBitmap(w, h);
byte[] temp = cloneWriteableBitmap.PixelBuffer.ToArray();
byte[] tempMask = (byte[])temp.Clone();
int b, g, r;
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
b = g = r = 0;
switch (direction)
{
case 1:
if (x >= k)
{
for (int i = 0; i <= k; i++)
{
b += (int)tempMask[(x - i) * 4 + y * w * 4];
g += (int)tempMask[(x - i) * 4 + 1 + y * w * 4];
r += (int)tempMask[(x - i) * 4 + 2 + y * w * 4];
}
temp[x * 4 + y * w * 4] = (byte)(b / (k + 1));
temp[x * 4 + 1 + y * w * 4] = (byte)(g / (k + 1));
temp[x * 4 + 2 + y * w * 4] = (byte)(r / (k + 1));
}
else
{
if (x > 0)
{
for (int i = 0; i < x; i++)
{
b += (int)tempMask[(x - i) * 4 + y * w * 4];
g += (int)tempMask[(x - i) * 4 + 1 + y * w * 4];
r += (int)tempMask[(x - i) * 4 + 2 + y * w * 4];
}
temp[x * 4 + y * w * 4] = (byte)(b / (x + 1));
temp[x * 4 + 1 + y * w * 4] = (byte)(g / (x + 1));
temp[x * 4 + 2 + y * w * 4] = (byte)(r / (x + 1));
}
else
{
temp[x * 4 + y * w * 4] = (byte)(tempMask[x * 4 + y * w * 4] / k);
temp[x * 4 + 1 + y * w * 4] = (byte)(tempMask[x * 4 + 1 + y * w * 4] / k);
temp[x * 4 + 2 + y * w * 4] = (byte)(tempMask[x * 4 + 2 + y * w * 4] / k);
}
}
break;
case 2:
if (y >= k)
{
for (int i = 0; i <= k; i++)
{
b += (int)tempMask[x * 4 + (y - i) * w * 4];
g += (int)tempMask[x * 4 + 1 + (y - i) * w * 4];
r += (int)tempMask[x * 4 + 2 + (y - i) * w * 4];
}
temp[x * 4 + y * w * 4] = (byte)(b / (k + 1));
temp[x * 4 + 1 + y * w * 4] = (byte)(g / (k + 1));
temp[x * 4 + 2 + y * w * 4] = (byte)(r / (k + 1));
}
else
{
if (y > 0)
{
for (int i = 0; i < y; i++)
{
b += (int)tempMask[x * 4 + (y - i) * w * 4];
g += (int)tempMask[x * 4 + 1 + (y - i) * w * 4];
r += (int)tempMask[x * 4 + 2 + (y - i) * w * 4];
}
temp[x * 4 + y * w * 4] = (byte)(b / (y + 1));
temp[x * 4 + 1 + y * w * 4] = (byte)(g / (y + 1));
temp[x * 4 + 2 + y * w * 4] = (byte)(r / (y + 1));
}
else
{
temp[x * 4 + y * w * 4] = (byte)(tempMask[x * 4 + y * w * 4] / k);
temp[x * 4 + 1 + y * w * 4] = (byte)(tempMask[x * 4 + 1 + y * w * 4] / k);
temp[x * 4 + 2 + y * w * 4] = (byte)(tempMask[x * 4 + 2 + y * w * 4] / k);
}
}
break;
default:
break;
}
}
}
Stream sTemp = srcImage.PixelBuffer.AsStream();
sTemp.Seek(0, SeekOrigin.Begin);
sTemp.Write(temp, 0, w * 4 * h);
return(srcImage);
}
else
{
return(null);
}
}