本文整理汇总了C#中OpenCvSharp.CPlusPlus.Mat.Channels方法的典型用法代码示例。如果您正苦于以下问题：C# Mat.Channels方法的具体用法？C# Mat.Channels怎么用？C# Mat.Channels使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类OpenCvSharp.CPlusPlus.Mat的用法示例。
在下文中一共展示了Mat.Channels方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ToMat
/// <summary>
/// System.Drawing.BitmapからOpenCVのMatへ変換して返す.
/// </summary>
/// <param name="src">変換するSystem.Drawing.Bitmap</param>
/// <param name="dst">変換結果を格納するMat</param>
#else
/// <summary>
/// Converts System.Drawing.Bitmap to Mat
/// </summary>
/// <param name="src">System.Drawing.Bitmap object to be converted</param>
/// <param name="dst">A Mat object which is converted from System.Drawing.Bitmap</param>
#endif
public static unsafe void ToMat(this Bitmap src, Mat dst)
{
if (src == null)
throw new ArgumentNullException("src");
if (dst == null)
throw new ArgumentNullException("dst");
if (dst.IsDisposed)
throw new ArgumentException("The specified dst is disposed.", "dst");
if (dst.Depth() != MatType.CV_8U)
throw new NotSupportedException("Mat depth != CV_8U");
if (dst.Dims() != 2)
throw new NotSupportedException("Mat dims != 2");
if (src.Width != dst.Width || src.Height != dst.Height)
throw new ArgumentException("src.Size != dst.Size");
int w = src.Width;
int h = src.Height;
Rectangle rect = new Rectangle(0, 0, w, h);
BitmapData bd = null;
try
{
bd = src.LockBits(rect, ImageLockMode.ReadOnly, src.PixelFormat);
byte* p = (byte*)bd.Scan0.ToPointer();
int sstep = bd.Stride;
int offset = sstep - (w / 8);
uint dstep = (uint)dst.Step();
IntPtr dstData = dst.Data;
byte* dstPtr = (byte*)dstData.ToPointer();
bool submat = dst.IsSubmatrix();
bool continuous = dst.IsContinuous();
switch (src.PixelFormat)
{
case PixelFormat.Format1bppIndexed:
{
if (dst.Channels() != 1)
throw new ArgumentException("Invalid nChannels");
if (submat)
throw new NotImplementedException("submatrix not supported");
int x = 0;
int y;
int bytePos;
byte b;
int i;
for (y = 0; y < h; y++)
{
// 横は必ず4byte幅に切り上げられる。
// この行の各バイトを調べていく
for (bytePos = 0; bytePos < sstep; bytePos++)
{
if (x < w)
{
// 現在の位置のバイトからそれぞれのビット8つを取り出す
b = p[bytePos];
for (i = 0; i < 8; i++)
{
if (x >= w)
{
break;
}
// IplImageは8bit/pixel
dstPtr[dstep * y + x] = ((b & 0x80) == 0x80) ? (byte)255 : (byte)0;
b <<= 1;
x++;
}
}
}
// 次の行へ
x = 0;
p += sstep;
}
}
break;
case PixelFormat.Format8bppIndexed:
case PixelFormat.Format24bppRgb:
{
if (src.PixelFormat == PixelFormat.Format8bppIndexed)
if (dst.Channels() != 1)
throw new ArgumentException("Invalid nChannels");
if (src.PixelFormat == PixelFormat.Format24bppRgb)
if (dst.Channels() != 3)
throw new ArgumentException("Invalid nChannels");
// ステップが同じで連続なら、一気にコピー
//.........这里部分代码省略.........
示例2: KinectImagetoMat
//bufferをもとに白黒Matデータ作成
private void KinectImagetoMat(Mat mat, byte[] buffer)
{
int channel = mat.Channels();
int depth = mat.Depth();
unsafe
{
byte* matPtr = mat.DataPointer;
for (int i = 0; i < this.imageWidth * this.imageHeight; i++)
{
if (buffer[i] == 255)
{
for (int j = 0; j < channel; j++)
{
*(matPtr + i * channel + j) = 255;
}
}
else
{
for (int j = 0; j < channel; j++)
{
*(matPtr + i * channel + j) = 0;
}
}
}
}
}示例3: ToMat
/// <summary>
/// WriteableBitmapをMatに変換する.
/// </summary>
/// <param name="src">変換するWriteableBitmap</param>
/// <param name="dst">出力先のMat</param>
#else
/// <summary>
/// Converts WriteableBitmap to Mat
/// </summary>
/// <param name="src">Input WriteableBitmap</param>
/// <param name="dst">Output Mat</param>
#endif
public static void ToMat(this WriteableBitmap src, Mat dst)
{
if (src == null)
throw new ArgumentNullException("src");
if (dst == null)
throw new ArgumentNullException("dst");
if (src.PixelWidth != dst.Width || src.PixelHeight != dst.Height)
throw new ArgumentException("size of src must be equal to size of dst");
if (dst.Dims() > 2)
throw new ArgumentException("Mat dimensions must be 2");
int w = src.PixelWidth;
int h = src.PixelHeight;
int bpp = src.Format.BitsPerPixel;
int channels = GetOptimumChannels(src.Format);
if (dst.Channels() != channels)
{
throw new ArgumentException("nChannels of dst is invalid", "dst");
}
unsafe
{
byte* p = (byte*)(dst.Data);
long step = dst.Step();
// 1bppは手作業でコピー
if (bpp == 1)
{
// BitmapImageのデータを配列にコピー
// 要素1つに横8ピクセル分のデータが入っている。
int stride = (w / 8) + 1;
byte[] pixels = new byte[h * stride];
src.CopyPixels(pixels, stride, 0);
int x = 0;
for (int y = 0; y < h; y++)
{
int offset = y * stride;
// この行の各バイトを調べていく
for (int bytePos = 0; bytePos < stride; bytePos++)
{
if (x < w)
{
// 現在の位置のバイトからそれぞれのビット8つを取り出す
byte b = pixels[offset + bytePos];
for (int i = 0; i < 8; i++)
{
if (x >= w)
{
break;
}
p[step * y + x] = ((b & 0x80) == 0x80) ? (byte)255 : (byte)0;
b <<= 1;
x++;
}
}
}
// 次の行へ
x = 0;
}
}
// 8bpp
/*else if (bpp == 8)
{
int stride = w;
byte[] pixels = new byte[h * stride];
src.CopyPixels(pixels, stride, 0);
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
p[step * y + x] = pixels[y * stride + x];
}
}
}*/
// 24bpp, 32bpp, ...
else
{
int stride = w * ((bpp + 7) / 8);
long imageSize = dst.DataEnd.ToInt64() - dst.DataStart.ToInt64();
if (imageSize < 0)
throw new OpenCvSharpException("The mat has invalid data pointer");
if (imageSize > Int32.MaxValue)
throw new OpenCvSharpException("Too big mat data");
src.CopyPixels(Int32Rect.Empty, dst.Data, (int)imageSize, stride);
}
}
//.........这里部分代码省略.........
示例4: ToWriteableBitmap
/// <summary>
/// MatをWriteableBitmapに変換する.
/// 返却値を新たに生成せず引数で指定したWriteableBitmapに格納するので、メモリ効率が良い。
/// </summary>
/// <param name="src">変換するMat</param>
/// <param name="dst">変換結果を設定するWriteableBitmap</param>
#else
/// <summary>
/// Converts Mat to WriteableBitmap.
/// This method is more efficient because new instance of WriteableBitmap is not allocated.
/// </summary>
/// <param name="src">Input Mat</param>
/// <param name="dst">Output WriteableBitmap</param>
#endif
public static void ToWriteableBitmap(Mat src, WriteableBitmap dst)
{
if (src == null)
throw new ArgumentNullException("src");
if (dst == null)
throw new ArgumentNullException("dst");
if (src.Width != dst.PixelWidth || src.Height != dst.PixelHeight)
throw new ArgumentException("size of src must be equal to size of dst");
//if (src.Depth != BitDepth.U8)
//throw new ArgumentException("bit depth of src must be BitDepth.U8", "src");
if (src.Dims() > 2)
throw new ArgumentException("Mat dimensions must be 2");
int w = src.Width;
int h = src.Height;
int bpp = dst.Format.BitsPerPixel;
int channels = GetOptimumChannels(dst.Format);
if (src.Channels() != channels)
{
throw new ArgumentException("channels of dst != channels of PixelFormat", "dst");
}
if (bpp == 1)
{
unsafe
{
// 手作業で移し替える
int stride = w / 8 + 1;
if (stride < 2)
{
stride = 2;
}
byte[] pixels = new byte[h * stride];
byte* p = (byte*)(src.Data);
int x = 0;
long step = src.Step();
for (int y = 0; y < h; y++)
{
int offset = y * stride;
for (int bytePos = 0; bytePos < stride; bytePos++)
{
if (x < w)
{
byte b = 0;
// 現在の位置から横8ピクセル分、ビットがそれぞれ立っているか調べ、1つのbyteにまとめる
for (int i = 0; i < 8; i++)
{
b <<= 1;
if (x < w && p[step * y + x] != 0)
{
b |= 1;
}
x++;
}
pixels[offset + bytePos] = b;
}
}
x = 0;
}
dst.WritePixels(new Int32Rect(0, 0, w, h), pixels, stride, 0);
}
}
else
{
long imageSize = src.DataEnd.ToInt64() - src.DataStart.ToInt64();
if (imageSize < 0)
throw new OpenCvSharpException("The mat has invalid data pointer");
if (imageSize > Int32.MaxValue)
throw new OpenCvSharpException("Too big mat data");
dst.WritePixels(new Int32Rect(0, 0, w, h), src.Data, (int)imageSize, (int)src.Step());
}
}示例5: ToWriteableBitmap
/// <summary>
/// MatをWriteableBitmapに変換する.
/// 返却値を新たに生成せず引数で指定したWriteableBitmapに格納するので、メモリ効率が良い。
/// </summary>
/// <param name="src">変換するMat</param>
/// <param name="dst">変換結果を設定するWriteableBitmap</param>
#else
/// <summary>
/// Converts Mat to WriteableBitmap.
/// This method is more efficient because new instance of WriteableBitmap is not allocated.
/// </summary>
/// <param name="src">Input Mat</param>
/// <param name="dst">Output WriteableBitmap</param>
#endif
public static void ToWriteableBitmap(Mat src, WriteableBitmap dst)
{
if (src == null)
throw new ArgumentNullException("src");
if (dst == null)
throw new ArgumentNullException("dst");
if (src.Width != dst.PixelWidth || src.Height != dst.PixelHeight)
throw new ArgumentException("size of src must be equal to size of dst");
//if (src.Depth != BitDepth.U8)
//throw new ArgumentException("bit depth of src must be BitDepth.U8", "src");
if (src.Dims() > 2)
throw new ArgumentException("Mat dimensions must be 2");
int w = src.Width;
int h = src.Height;
int bpp = dst.Format.BitsPerPixel;
int channels = GetOptimumChannels(dst.Format);
if (src.Channels() != channels)
{
throw new ArgumentException("channels of dst != channels of PixelFormat", "dst");
}
bool submat = src.IsSubmatrix();
bool continuous = src.IsContinuous();
unsafe
{
byte* pSrc = (byte*)(src.Data);
int sstep = (int)src.Step();
if (bpp == 1)
{
if (submat)
throw new NotImplementedException("submatrix not supported");
// 手作業で移し替える
int stride = w / 8 + 1;
if (stride < 2)
stride = 2;
byte[] pixels = new byte[h * stride];
for (int x = 0, y = 0; y < h; y++)
{
int offset = y * stride;
for (int bytePos = 0; bytePos < stride; bytePos++)
{
if (x < w)
{
byte b = 0;
// 現在の位置から横8ピクセル分、ビットがそれぞれ立っているか調べ、1つのbyteにまとめる
for (int i = 0; i < 8; i++)
{
b <<= 1;
if (x < w && pSrc[sstep * y + x] != 0)
{
b |= 1;
}
x++;
}
pixels[offset + bytePos] = b;
}
}
x = 0;
}
dst.WritePixels(new Int32Rect(0, 0, w, h), pixels, stride, 0);
return;
}
// 一気にコピー
if (!submat && continuous)
{
long imageSize = src.DataEnd.ToInt64() - src.Data.ToInt64();
if (imageSize < 0)
throw new OpenCvSharpException("The mat has invalid data pointer");
if (imageSize > Int32.MaxValue)
throw new OpenCvSharpException("Too big mat data");
dst.WritePixels(new Int32Rect(0, 0, w, h), src.Data, (int)imageSize, sstep);
return;
}
// 一列ごとにコピー
try
{
dst.Lock();
//.........这里部分代码省略.........
示例6: ToBitmap
/// <summary>
/// OpenCVのMatを指定した出力先にSystem.Drawing.Bitmapとして変換する
/// </summary>
/// <param name="src">変換するMat</param>
/// <param name="dst">出力先のSystem.Drawing.Bitmap</param>
/// <remarks>Author: shimat, Gummo (ROI support)</remarks>
#else
/// <summary>
/// Converts Mat to System.Drawing.Bitmap
/// </summary>
/// <param name="src">Mat</param>
/// <param name="dst">Mat</param>
/// <remarks>Author: shimat, Gummo (ROI support)</remarks>
#endif
public static unsafe void ToBitmap(Mat src, Bitmap dst)
{
if (src == null)
throw new ArgumentNullException("src");
if (dst == null)
throw new ArgumentNullException("dst");
if (src.IsDisposed)
throw new ArgumentException("The image is disposed.", "src");
if (src.Depth() != MatType.CV_8U)
throw new ArgumentException("Depth of the image must be CV_8U");
//if (src.IsSubmatrix())
// throw new ArgumentException("Submatrix is not supported");
if (src.Width != dst.Width || src.Height != dst.Height)
throw new ArgumentException("");
PixelFormat pf = dst.PixelFormat;
// 1プレーン用の場合、グレースケールのパレット情報を生成する
if (pf == PixelFormat.Format8bppIndexed)
{
ColorPalette plt = dst.Palette;
for (int x = 0; x < 256; x++)
{
plt.Entries[x] = Color.FromArgb(x, x, x);
}
dst.Palette = plt;
}
int w = src.Width;
int h = src.Height;
Rectangle rect = new Rectangle(0, 0, w, h);
BitmapData bd = null;
try
{
bd = dst.LockBits(rect, ImageLockMode.WriteOnly, pf);
byte* psrc = (byte*)(src.DataStart.ToPointer());
byte* pdst = (byte*)(bd.Scan0.ToPointer());
int ch = src.Channels();
int sstep = (int)src.Step();
int dstep = ((src.Width * ch) + 3) / 4 * 4; // 4の倍数に揃える
int stride = bd.Stride;
switch (pf)
{
case PixelFormat.Format1bppIndexed:
{
// BitmapDataは4byte幅だが、IplImageは1byte幅
// 手作業で移し替える
//int offset = stride - (w / 8);
int x = 0;
int y;
int bytePos;
byte mask;
byte b = 0;
int i;
for (y = 0; y < h; y++)
{
for (bytePos = 0; bytePos < stride; bytePos++)
{
if (x < w)
{
for (i = 0; i < 8; i++)
{
mask = (byte)(0x80 >> i);
if (x < w && psrc[sstep * y + x] == 0)
b &= (byte)(mask ^ 0xff);
else
b |= mask;
x++;
}
pdst[bytePos] = b;
}
}
x = 0;
pdst += stride;
}
break;
}
case PixelFormat.Format8bppIndexed:
case PixelFormat.Format24bppRgb:
case PixelFormat.Format32bppArgb:
//.........这里部分代码省略.........