public static Gray <byte> ToGray(this Bgr <byte> bgr)
{
Gray <byte> gray = default(Gray <byte>);
Bgr <byte> .Convert(bgr, ref gray);
return(gray);
}
/// <summary>
/// Converts an image to an bitmap.
/// </summary>
/// <param name="img">Input image.</param>
/// <returns>Bitmap</returns>
public static Bitmap ToBitmap(this Gray<short>[,] img)
{
Bitmap bmp = null;
using (var uImg = img.Lock())
{
bmp = toBitmap(uImg, PixelFormat.Format16bppGrayScale);
}
return bmp;
}
/// <summary>
/// Converts an image to an bitmap.
/// </summary>
/// <param name="img">Input image.</param>
/// <returns>Bitmap</returns>
public static Bitmap ToBitmap(this Gray<byte>[,] img)
{
Bitmap bmp = null;
using (var uImg = img.Lock())
{
bmp = toBitmap(uImg, PixelFormat.Format8bppIndexed);
}
return bmp;
}
public static void Convert(Bgr <byte> bgr, ref Gray <byte> gray)
{
int val = ((bgr.R << 1) + //2 * red
(bgr.G << 2) + bgr.G + //5 * green
bgr.B //1 * blue
) >> 3; //divide by 8
gray.Intensity = (byte)val;
}
/// <summary>
/// Converts the specified managed array to the corresponding bitmap source.
/// </summary>
/// <param name="image">Managed array.</param>
/// <returns>Bitmap source.</returns>
public static BitmapSource ToBitmapSource(this Gray <short>[,] image)
{
BitmapSource bmpSource = null;
using (var uImg = image.Lock())
{
bmpSource = BitmapSource.Create(uImg.Width, uImg.Height, 96, 96,
PixelFormats.Gray16, BitmapPalettes.Gray256,
uImg.ImageData, uImg.Stride * uImg.Height, uImg.Stride);
}
return(bmpSource);
}
/// <summary>
/// Sets the specified value for only those element of the array where the mask is non-zero.
/// </summary>
/// <typeparam name="T">Element type.</typeparam>
/// <param name="array">Array with value type elements.</param>
/// <param name="value">Value to set.</param>
/// <param name="mask">Mask.</param>
public static void SetValue <T>(this T[,] array, T value, Gray <byte>[,] mask)
{
if (array.Size() != mask.Size())
{
throw new ArgumentException("Array and mask must have the same size.");
}
ParallelLauncher.Launch((thread) =>
{
if (mask[thread.Y, thread.X] != 0)
{
array[thread.Y, thread.X] = value;
}
},
array.Width(), array.Height());
}
/// <summary>
/// Extracts the specified image channels.
/// </summary>
/// <typeparam name="TSrcColor">Source color type.</typeparam>
/// <typeparam name="TDepth">Channel depth type.</typeparam>
/// <param name="image">Image.</param>
/// <param name="area">Working area.</param>
/// <param name="channelIndices">Channel indicies to extract. If null, all channels are extracted.</param>
/// <returns>Channel collection.</returns>
public static unsafe Gray <TDepth>[][,] SplitChannels <TSrcColor, TDepth>(this TSrcColor[,] image, Rectangle area, params int[] channelIndices)
where TSrcColor : struct, IColor <TDepth>
where TDepth : struct
{
if (channelIndices == null || channelIndices.Length == 0)
{
channelIndices = Enumerable.Range(0, ColorInfo.GetInfo <TSrcColor>().ChannelCount).ToArray();
}
var channels = new Gray <TDepth> [channelIndices.Length][, ];
for (int i = 0; i < channelIndices.Length; i++)
{
channels[i] = GetChannel <TSrcColor, TDepth>(image, area, channelIndices[i]);
}
return(channels);
}
/// <summary>
/// Extracts a single image channel.
/// </summary>
/// <typeparam name="TSrcColor">Source color type.</typeparam>
/// <typeparam name="TDepth">Channel depth type.</typeparam>
/// <param name="image">Image.</param>
/// <param name="area">Working area.</param>
/// <param name="channelIndex">Channel index.</param>
/// <returns>Extracted channel.</returns>
public static unsafe Gray <TDepth>[,] GetChannel <TSrcColor, TDepth>(this TSrcColor[,] image, Rectangle area, int channelIndex)
where TSrcColor : struct, IColor <TDepth>
where TDepth : struct
{
int width = area.Width;
int height = area.Height;
var dest = new Gray <TDepth> [area.Height, area.Width];
using (var lockedImage = image.Lock())
using (var dstImg = dest.Lock())
{
var srcImg = lockedImage.GetSubRect(area);
int channelSize = srcImg.ColorInfo.ChannelSize;
int colorSize = srcImg.ColorInfo.Size;
byte *srcPtr = (byte *)srcImg.ImageData + channelIndex * srcImg.ColorInfo.ChannelSize;
byte *dstPtr = (byte *)dstImg.ImageData;
for (int row = 0; row < height; row++)
{
byte *srcColPtr = srcPtr;
byte *dstColPtr = dstPtr;
for (int col = 0; col < width; col++)
{
/********** copy channel byte-per-byte ************/
for (int partIdx = 0; partIdx < channelSize; partIdx++)
{
dstColPtr[partIdx] = srcColPtr[partIdx];
}
srcColPtr += colorSize; //move to the next column
dstColPtr += channelSize;
/********** copy channel byte-per-byte ************/
}
srcPtr += srcImg.Stride;
dstPtr += dstImg.Stride;
}
}
return(dest);
}
/// <summary>
/// Saves the specified image.
/// </summary>
/// <param name="image">Image to save.</param>
/// <param name="fileName">Image filename.</param>
public static void Save(this Gray <double>[,] image, string fileName)
{
image.Save <Gray <double> >(fileName);
}
/// <summary>
/// Copies values from source to destination image using mask. Destination values where mask == 0 are not erased!.
/// </summary>
/// <param name="source">Image.</param>
/// <param name="destination">Destination image</param>
/// <param name="mask">Mask. Color locations that need to be copied must be set to !=0 in mask.</param>
public static void CopyTo <TColor>(this TColor[,] source, TColor[,] destination, Gray <byte>[,] mask)
where TColor : struct
{
if (source.Size() != mask.Size() || source.Size() != destination.Size())
{
throw new Exception("Image, mask, destImg size must be the same!");
}
ParallelLauncher.Launch((thread) =>
{
if (mask[thread.Y, thread.X] != 0)
{
destination[thread.Y, thread.X] = source[thread.Y, thread.X];
}
},
source.Width(), source.Height());
}
/// <summary>
/// Converts the source color to the destination color.
/// </summary>
/// <param name="grayIm">Source image.</param>
/// <returns>image with converted color.</returns>
public static Bgr <byte>[,] ToBgr(this Gray <byte>[,] grayIm)
{
return(grayIm.Convert <Gray <byte>, Bgr <byte> >(Gray <byte> .Convert));
}
/// <summary>
/// Converts the source color to the destination color.
/// </summary>
/// <param name="grayIm">Source image.</param>
/// <param name="area">Working area.</param>
/// <returns>image with converted color.</returns>
public static Bgr <byte>[,] ToBgr(this Gray <byte>[,] grayIm, Rectangle area)
{
return(grayIm.Convert <Gray <byte>, Bgr <byte> >(Gray <byte> .Convert, area));
}
/// <summary>
/// Gets System.Drawing.Color from Bgr8 color.
/// </summary>
/// <param name="color">Color.</param>
/// <param name="opacity">Opacity. If color has 4 channels opacity is discarded.</param>
/// <returns>System.Drawing.Color</returns>
public static System.Drawing.Color ToColor(this Gray <byte> color, byte opacity = Byte.MaxValue)
{
return(Color.FromArgb(opacity, color.Intensity, color.Intensity, color.Intensity));
}
/// <summary>
/// Encodes the specified image into the specified image type byte array.
/// </summary>
/// <param name="image">Image to encode.</param>
/// <param name="extension">Image type extension (.bmp, .png, .jpg)</param>
/// <returns>Image type byte array.</returns>
public static byte[] Encode(this Gray <ushort>[,] image, string extension)
{
return(encode(image, extension, null));
}
/// <summary>
/// Converts 8-bit gray intensity to the 8-bit Bgr color.
/// </summary>
/// <param name="gray">Source color.</param>
/// <param name="bgr">Destination color.</param>
public static void Convert(Gray <T> gray, ref Bgr <T> bgr)
{
bgr.B = gray.Intensity;
bgr.G = gray.Intensity;
bgr.R = gray.Intensity;
}
/// <summary>
/// Encodes the specified image into the PNG byte array.
/// </summary>
/// <param name="image">Image to encode.</param>
/// <param name="pngCompression">PNG compression level [0..9] where 9 is the highest compression.</param>
/// <returns>PNG byte array.</returns>
public static byte[] EncodeAsPng(this Gray <ushort>[,] image, int pngCompression = 3)
{
return(encodeAsPng(image, pngCompression));
}
/// <summary>
/// Encodes the specified image into the Jpeg byte array.
/// </summary>
/// <param name="image">Image to encode.</param>
/// <param name="jpegQuality">Jpeg quality [0..100] where 100 is the highest quality.</param>
/// <returns>Jpeg byte array.</returns>
public static byte[] EncodeAsJpeg(this Gray <ushort>[,] image, int jpegQuality = 95)
{
return(encodeAsJpeg(image, jpegQuality));
}
/// <summary>
/// Converts the source channel depth to the destination channel depth.
/// </summary>
/// <typeparam name="TDepth">Destination channel depth.</typeparam>
/// <param name="image">Image.</param>
/// <returns>Image with converted element depth.</returns>
public static Gray <TDepth>[,] Cast <TDepth>(this Gray <double>[,] image)
where TDepth : struct
{
return(image.ConvertChannelDepth <Gray <double>, Gray <TDepth> >());
}
/// <summary>
/// Saves the specified image.
/// </summary>
/// <param name="image">Image to save.</param>
/// <param name="fileName">Image filename.</param>
public static void Save(this Gray <ushort>[,] image, string fileName)
{
image.Save <Gray <ushort> >(fileName);
}
/// <summary>
/// Replaces the selected image channel with the specified channel.
/// </summary>
/// <typeparam name="TSrcColor">Source color type.</typeparam>
/// <typeparam name="TDepth">Channel depth type.</typeparam>
/// <param name="image">Image.</param>
/// <param name="channel">Channel.</param>
/// <param name="channelIndex">Index of a channel to replace.</param>
public static void ReplaceChannel <TSrcColor, TDepth>(this TSrcColor[,] image, Gray <TDepth>[,] channel, int channelIndex)
where TSrcColor : unmanaged, IColor <TDepth>
where TDepth : unmanaged
{
using (var im = image.Lock())
using (var ch = channel.Lock())
{
replaceChannel <TSrcColor, TDepth>(im, ch, channelIndex);
}
}