這篇筆記是C Sharp 的wpf BitmapImage、windows form Bitmap以及Halcon的HImage、HObject間的轉換。
下面的程式碼，參考了xh6300及莫干大大的博客，不過裡面有一點點小問題，筆者已經修正，
像是在灰階圖從HObject轉回Bitmap時，指標必需是IntPtr轉Int64才可以，不然會出現溢位。
真心感恩兩位大大的貢獻！
下面的程式碼中，有HObject、Bitmap、BitmapImage及HImage、Bitmap、BitmapImage間的互轉，
其實都一樣，若要使用，建議實做HObject、Bitmap、BitmapImage的轉換就好了，
因為HalconDotNet.HOperatorSet大多都只支援HObject的輸出，
用HImage會稍微吃虧一點。
C Sharp 程式碼放如下(2019.05.26)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace TestTransBetween_HObj_Bitmap_BitmapImg
{
class ImageTypeConverter
{
/// <summary>
/// Convert BitmapImage to Bitmap
/// </summary>
/// <param name="input">BitmapImage which be converted</param>
/// <returns>Bitmap</returns>
public static System.Drawing.Bitmap Bitmapimage2Bitmap(System.Windows.Media.Imaging.BitmapImage input)
{
if (input == null)
return null;
using (System.IO.MemoryStream outmstream = new System.IO.MemoryStream())
{
System.Windows.Media.Imaging.BitmapEncoder enc = new System.Windows.Media.Imaging.BmpBitmapEncoder();
enc.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(input));
enc.Save(outmstream);
System.Drawing.Bitmap retBitmap = new System.Drawing.Bitmap(outmstream);
if (retBitmap.PixelFormat == System.Drawing.Imaging.PixelFormat.Format8bppIndexed)
{
System.Drawing.Imaging.ColorPalette new_pal = retBitmap.Palette;
for (int i = 0; i < 256; i++)
{
new_pal.Entries[i] = System.Drawing.Color.FromArgb(255, i, i, i);
}
retBitmap.Palette = new_pal;
}
return retBitmap;
}
}
/// <summary>
/// Convert BitmapImage to HImage
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static HalconDotNet.HImage Bitmapimage2HImage(System.Windows.Media.Imaging.BitmapImage input)
{
if (input == null)
return new HalconDotNet.HImage();
try
{
HalconDotNet.HImage himg = new HalconDotNet.HImage();
int width = input.PixelWidth;
int height = input.PixelHeight;
int stride = width * ((input.Format.BitsPerPixel + 7) / 8);
byte[] imageData = new byte[height * stride];
input.CopyPixels(imageData, stride, 0);
IntPtr ImgPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(imageData.Length);
System.Runtime.InteropServices.Marshal.Copy(imageData, 0, ImgPtr, imageData.Length);
if (input.Format == System.Windows.Media.PixelFormats.Indexed8 || input.Format == System.Windows.Media.PixelFormats.Gray8)
{
himg.GenImage1("byte", input.PixelWidth, input.PixelHeight, ImgPtr);
}
else if (input.Format == System.Windows.Media.PixelFormats.Rgb24)
{
himg.GenImageInterleaved(ImgPtr, "rgb", input.PixelWidth, input.PixelHeight, -1, "byte", input.PixelWidth, input.PixelHeight, 0, 0, -1, 0);
}
else if (input.Format == System.Windows.Media.PixelFormats.Bgr24)
{
himg.GenImageInterleaved(ImgPtr, "bgr", input.PixelWidth, input.PixelHeight, -1, "byte", input.PixelWidth, input.PixelHeight, 0, 0, -1, 0);
}
else if (input.Format == System.Windows.Media.PixelFormats.Bgra32 || input.Format == System.Windows.Media.PixelFormats.Bgr32)
{
himg.GenImageInterleaved(ImgPtr, "bgrx", input.PixelWidth, input.PixelHeight, -1, "byte", input.PixelWidth, input.PixelHeight, 0, 0, -1, 0);
}
else // default: trans to color image
{
System.Drawing.Bitmap Meta = ImageTypeConverter.Bitmapimage2Bitmap(input);
himg = ImageTypeConverter.Bitmap2HImage(Meta);
}
System.Runtime.InteropServices.Marshal.FreeHGlobal(ImgPtr);
return himg;
}
catch (HalconDotNet.HalconException ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmapimage2HImage: " + ex.Message);
return null;
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmapimage2HImage: " + ex.Message);
return null;
}
}
/// <summary>
/// Convert Bitmap to HImage which Halcon dot net data type
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static HalconDotNet.HImage Bitmap2HImage(System.Drawing.Bitmap input)
{
if (input == null)
return new HalconDotNet.HImage();
try
{
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(0, 0, input.Width, input.Height);
HalconDotNet.HImage himg = new HalconDotNet.HImage();
if (input.PixelFormat == System.Drawing.Imaging.PixelFormat.Format8bppIndexed)
{
System.Drawing.Imaging.BitmapData srcBmpData = input.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format8bppIndexed);
himg.GenImage1("byte", input.Width, input.Height, srcBmpData.Scan0);
input.UnlockBits(srcBmpData);
}
else if (input.PixelFormat == System.Drawing.Imaging.PixelFormat.Format24bppRgb)
{
System.Drawing.Imaging.BitmapData srcBmpData = input.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
himg.GenImageInterleaved(srcBmpData.Scan0, "bgr", input.Width, input.Height, -1, "byte", 0, 0, 0, 0, -1, 0);
input.UnlockBits(srcBmpData);
}
else if (input.PixelFormat == System.Drawing.Imaging.PixelFormat.Format32bppArgb)
{
System.Drawing.Imaging.BitmapData srcBmpData = input.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, input.PixelFormat);
himg.GenImageInterleaved(srcBmpData.Scan0, "bgrx", input.Width, input.Height, -1, "byte", input.Width, input.Height, 0, 0, -1, 0);
input.UnlockBits(srcBmpData);
}
else // default: trans to color image
{
System.Drawing.Imaging.BitmapData srcBmpData = null;
System.Drawing.Bitmap MetaBmp = new System.Drawing.Bitmap(input.Width, input.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(MetaBmp);
g.DrawImage(input, rect);
g.Dispose();
srcBmpData = MetaBmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
himg.GenImageInterleaved(srcBmpData.Scan0, "bgr", input.Width, input.Height, -1, "byte", 0, 0, 0, 0, -1, 0);
MetaBmp.UnlockBits(srcBmpData);
}
return himg;
}
catch (HalconDotNet.HalconException ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmap2HImage: " + ex.Message);
return null;
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmap2HImage: " + ex.Message);
return null;
}
}
/// <summary>
/// Convert Bitmap to BitmapImage
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static System.Windows.Media.Imaging.BitmapImage Bitmap2Bitmapimage(System.Drawing.Bitmap input)
{
System.Windows.Media.Imaging.BitmapImage retval = new System.Windows.Media.Imaging.BitmapImage();
if (input == null)
return retval;
IntPtr hBitmap = input.GetHbitmap();
try
{
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
input.Save(ms, System.Drawing.Imaging.ImageFormat.Png);
ms.Position = 0;
retval.BeginInit();
// According to MSDN, "The default OnDemand cache option retains access to the stream until the image is needed."
// Force the bitmap to load right now so we can dispose the stream.
retval.CacheOption = System.Windows.Media.Imaging.BitmapCacheOption.OnLoad;
retval.StreamSource = ms;
retval.EndInit();
retval.Freeze();
}
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmap2Bitmapimage" + ex.Message);
}
return retval;
}
/// <summary>
/// Copy data from one memory address, source, to another address, destination.
/// </summary>
/// <param name="destination"></param>
/// <param name="source"></param>
/// <param name="length"></param>
[System.Runtime.InteropServices.DllImport("kernel32.dll", SetLastError = true, EntryPoint = "CopyMemory")]
private static extern void CopyMemory(Int64 destination, Int64 source, Int64 length);
/// <summary>
/// Convert HImage to Bitmap
/// </summary>
/// <param name="HImg"></param>
/// <returns></returns>
public static System.Drawing.Bitmap HImage2Bitmap(HalconDotNet.HImage HImg)
{
if (HImg == null)
return null;
try
{
System.Drawing.Bitmap bmpImg;
HalconDotNet.HTuple Channels;
Channels = HImg.CountChannels();
if (Channels.I == 1)
{
System.Drawing.Imaging.PixelFormat pixelFmt = System.Drawing.Imaging.PixelFormat.Format8bppIndexed;
HalconDotNet.HTuple hpointer, type, width, height;
const int Alpha = 255;
Int64[] ptr = new Int64[2];
hpointer = HImg.GetImagePointer1(out type, out width, out height);
bmpImg = new System.Drawing.Bitmap(width.I, height.I, pixelFmt);
System.Drawing.Imaging.ColorPalette pal = bmpImg.Palette;
for (int i = 0; i < 256; i++)
pal.Entries[i] = System.Drawing.Color.FromArgb(Alpha, i, i, i);
bmpImg.Palette = pal;
System.Drawing.Imaging.BitmapData bitmapData = bmpImg.LockBits(new System.Drawing.Rectangle(0, 0, width.I, height.I), System.Drawing.Imaging.ImageLockMode.ReadWrite, pixelFmt);
int PixelsSize = System.Drawing.Bitmap.GetPixelFormatSize(bitmapData.PixelFormat) / 8;
Console.WriteLine(bitmapData.Scan0);
ptr[0] = (Int64)bitmapData.Scan0;
ptr[1] = (Int64)hpointer.IP;
if (width % 4 == 0)
CopyMemory(ptr[0], ptr[1], width * height * PixelsSize);
else
{
ptr[1] += width;
CopyMemory(ptr[0], ptr[1], width * PixelsSize);
ptr[0] += width;
}
bmpImg.UnlockBits(bitmapData);
}
else if (Channels.I == 3)
{
System.Drawing.Imaging.PixelFormat pixelFmt = System.Drawing.Imaging.PixelFormat.Format24bppRgb;
HalconDotNet.HTuple hred, hgreen, hblue, type, width, height;
HImg.GetImagePointer3(out hred, out hgreen, out hblue, out type, out width, out height);
//HalconDotNet.HOperatorSet.GetImagePointer3(HImg, out hred, out hgreen, out hblue, out type, out width, out height);
bmpImg = new System.Drawing.Bitmap(width.I, height.I, pixelFmt);
System.Drawing.Imaging.BitmapData bitmapData = bmpImg.LockBits(new System.Drawing.Rectangle(0, 0, width.I, height.I), System.Drawing.Imaging.ImageLockMode.ReadWrite, pixelFmt);
unsafe
{
byte* data = (byte*)bitmapData.Scan0;
byte* hr = (byte*)hred.IP;
byte* hg = (byte*)hgreen.IP;
byte* hb = (byte*)hblue.IP;
for (int i = 0; i < width.I * height.I; i++)
{
*(data + (i * 3)) = (*(hb + i));
*(data + (i * 3) + 1) = *(hg + i);
*(data + (i * 3) + 2) = *(hr + i);
}
}
bmpImg.UnlockBits(bitmapData);
}
else if (Channels.I == 4)
{
System.Drawing.Imaging.PixelFormat pixelFmt = System.Drawing.Imaging.PixelFormat.Format32bppRgb;
HalconDotNet.HTuple hred, hgreen, hblue, type, width, height;
HImg.GetImagePointer3(out hred, out hgreen, out hblue, out type, out width, out height);
//HalconDotNet.HOperatorSet.GetImagePointer3(HImg, out hred, out hgreen, out hblue, out type, out width, out height);
bmpImg = new System.Drawing.Bitmap(width.I, height.I, pixelFmt);
System.Drawing.Imaging.BitmapData bitmapData = bmpImg.LockBits(new System.Drawing.Rectangle(0, 0, width.I, height.I), System.Drawing.Imaging.ImageLockMode.ReadWrite, pixelFmt);
unsafe
{
byte* data = (byte*)bitmapData.Scan0;
byte* hr = (byte*)hred.IP;
byte* hg = (byte*)hgreen.IP;
byte* hb = (byte*)hblue.IP;
for (int i = 0; i < width.I * height.I; i++)
{
*(data + (i * 4)) = *(hb + i);
*(data + (i * 4) + 1) = *(hg + i);
*(data + (i * 4) + 2) = *(hr + i);
*(data + (i * 4) + 3) = 255;
}
bmpImg.UnlockBits(bitmapData);
}
}
else
{
bmpImg = null;
}
return bmpImg;
}
catch (HalconDotNet.HalconException ex)
{
Console.WriteLine("In ImageTypeConverter.HImage2Bitmap: " + ex.Message);
return null;
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.HImage2Bitmap: " + ex.Message);
return null;
}
}
/// <summary>
/// Convert HImage to BitmapImage
/// </summary>
/// <param name="HImg"></param>
/// <returns></returns>
public static System.Windows.Media.Imaging.BitmapImage HImage2Bitmapimage(HalconDotNet.HImage HImg)
{
if (HImg == null)
return null;
try
{
System.Windows.Media.Imaging.BitmapImage bmpimg = new System.Windows.Media.Imaging.BitmapImage();
HalconDotNet.HTuple Channels;
Channels = HImg.CountChannels();
if (Channels.I == 1)
{
System.Windows.Media.PixelFormat pixelFmt = System.Windows.Media.PixelFormats.Gray8;
HalconDotNet.HTuple hpointer, type, width, height;
hpointer = HImg.GetImagePointer1(out type, out width, out height);
System.Windows.Media.Imaging.WriteableBitmap MetaImg = new System.Windows.Media.Imaging.WriteableBitmap(width.I, height.I, 96, 96, pixelFmt, null);
MetaImg.Lock();
unsafe
{
byte* data = (byte*)MetaImg.BackBuffer;
byte* img_ptr = (byte*)hpointer.IP;
for (int i = 0; i < width.I * height.I; i++)
*(data + i) = (*(img_ptr + i));
}
MetaImg.Unlock();
bmpimg = ConvertWriteablebitmapToBitmapimage(MetaImg);
}
else if (Channels.I == 3)
{
System.Windows.Media.PixelFormat pixelFmt = System.Windows.Media.PixelFormats.Bgr24;
HalconDotNet.HTuple hred, hgreen, hblue, type, width, height;
HImg.GetImagePointer3(out hred, out hgreen, out hblue, out type, out width, out height);
//HalconDotNet.HOperatorSet.GetImagePointer3(HImg, out hred, out hgreen, out hblue, out type, out width, out height);
System.Windows.Media.Imaging.WriteableBitmap MetaImg = new System.Windows.Media.Imaging.WriteableBitmap(width.I, height.I, 96, 96, pixelFmt, null);
MetaImg.Lock();
unsafe
{
byte* data = (byte*)MetaImg.BackBuffer;
byte* hr = (byte*)hred.IP;
byte* hg = (byte*)hgreen.IP;
byte* hb = (byte*)hblue.IP;
for (int i = 0; i < width.I * height.I; i++)
{
*(data + (i * 3)) = (*(hb + i));
*(data + (i * 3) + 1) = *(hg + i);
*(data + (i * 3) + 2) = *(hr + i);
}
}
MetaImg.Unlock();
bmpimg = ConvertWriteablebitmapToBitmapimage(MetaImg);
}
else if (Channels.I == 4)
{
System.Windows.Media.PixelFormat pixelFmt = System.Windows.Media.PixelFormats.Pbgra32;
HalconDotNet.HTuple hred, hgreen, hblue, type, width, height;
HImg.GetImagePointer3(out hred, out hgreen, out hblue, out type, out width, out height);
//HalconDotNet.HOperatorSet.GetImagePointer3(HImg, out hred, out hgreen, out hblue, out type, out width, out height);
System.Windows.Media.Imaging.WriteableBitmap MetaImg = new System.Windows.Media.Imaging.WriteableBitmap(width.I, height.I, 96, 96, pixelFmt, null);
MetaImg.Lock();
unsafe
{
byte* data = (byte*)MetaImg.BackBuffer;
byte* hr = (byte*)hred.IP;
byte* hg = (byte*)hgreen.IP;
byte* hb = (byte*)hblue.IP;
for (int i = 0; i < width.I * height.I; i++)
{
*(data + (i * 4)) = *(hb + i);
*(data + (i * 4) + 1) = *(hg + i);
*(data + (i * 4) + 2) = *(hr + i);
*(data + (i * 4) + 3) = 255;
}
}
MetaImg.Unlock();
bmpimg = ConvertWriteablebitmapToBitmapimage(MetaImg);
}
else
{
bmpimg = null;
}
return bmpimg;
}
catch (HalconDotNet.HalconException ex)
{
Console.WriteLine("In ImageTypeConverter.HImage2Bitmapimage: " + ex.Message);
return null;
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.HImage2Bitmapimage: " + ex.Message);
return null;
}
}
/// <summary>
/// Convert WriteableBitmap to BitmapImage.
/// refer to https://stackoverflow.com/questions/14161665/how-do-i-convert-a-writeablebitmap-object-to-a-bitmapimage-object-in-wpf
/// </summary>
/// <param name="wbm"></param>
/// <returns></returns>
public static System.Windows.Media.Imaging.BitmapImage ConvertWriteablebitmapToBitmapimage(System.Windows.Media.Imaging.WriteableBitmap wbm)
{
System.Windows.Media.Imaging.BitmapImage bmpimg = new System.Windows.Media.Imaging.BitmapImage();
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
System.Windows.Media.Imaging.PngBitmapEncoder encoder = new System.Windows.Media.Imaging.PngBitmapEncoder();
encoder.Frames.Add(System.Windows.Media.Imaging.BitmapFrame.Create(wbm));
encoder.Save(stream);
bmpimg.BeginInit();
bmpimg.CacheOption = System.Windows.Media.Imaging.BitmapCacheOption.OnLoad;
bmpimg.StreamSource = stream;
bmpimg.EndInit();
bmpimg.Freeze();
}
return bmpimg;
}
// -- following by relative HObject converter codes
/// <summary>
/// Convert HObject to BitmapImage
/// </summary>
/// <param name="HImg"></param>
/// <returns></returns>
public static System.Drawing.Bitmap Hobject2Bitmap(HalconDotNet.HObject HImg)
{
if (HImg == null)
return null;
try
{
System.Drawing.Bitmap bmpImg;
HalconDotNet.HTuple Channels;
HalconDotNet.HOperatorSet.CountChannels(HImg, out Channels);
if (Channels.I == 1)
{
System.Drawing.Imaging.PixelFormat pixelFmt = System.Drawing.Imaging.PixelFormat.Format8bppIndexed;
HalconDotNet.HTuple hpointer, type, width, height;
const int Alpha = 255;
Int64[] ptr = new Int64[2];
HalconDotNet.HOperatorSet.GetImagePointer1(HImg, out hpointer, out type, out width, out height);
bmpImg = new System.Drawing.Bitmap(width.I, height.I, pixelFmt);
System.Drawing.Imaging.ColorPalette pal = bmpImg.Palette;
for (int i = 0; i < 256; i++)
pal.Entries[i] = System.Drawing.Color.FromArgb(Alpha, i, i, i);
bmpImg.Palette = pal;
System.Drawing.Imaging.BitmapData bitmapData = bmpImg.LockBits(new System.Drawing.Rectangle(0, 0, width.I, height.I), System.Drawing.Imaging.ImageLockMode.ReadWrite, pixelFmt);
int PixelsSize = System.Drawing.Bitmap.GetPixelFormatSize(bitmapData.PixelFormat) / 8;
Console.WriteLine(bitmapData.Scan0);
ptr[0] = (Int64)bitmapData.Scan0;
ptr[1] = (Int64)hpointer.IP;
if (width % 4 == 0)
CopyMemory(ptr[0], ptr[1], width * height * PixelsSize);
else
{
ptr[1] += width;
CopyMemory(ptr[0], ptr[1], width * PixelsSize);
ptr[0] += width;
}
bmpImg.UnlockBits(bitmapData);
}
else if (Channels.I == 3)
{
System.Drawing.Imaging.PixelFormat pixelFmt = System.Drawing.Imaging.PixelFormat.Format24bppRgb;
HalconDotNet.HTuple hred, hgreen, hblue, type, width, height;
HalconDotNet.HOperatorSet.GetImagePointer3(HImg, out hred, out hgreen, out hblue, out type, out width, out height);
bmpImg = new System.Drawing.Bitmap(width.I, height.I, pixelFmt);
System.Drawing.Imaging.BitmapData bitmapData = bmpImg.LockBits(new System.Drawing.Rectangle(0, 0, width.I, height.I), System.Drawing.Imaging.ImageLockMode.ReadWrite, pixelFmt);
unsafe
{
byte* data = (byte*)bitmapData.Scan0;
byte* hr = (byte*)hred.IP;
byte* hg = (byte*)hgreen.IP;
byte* hb = (byte*)hblue.IP;
for (int i = 0; i < width.I * height.I; i++)
{
*(data + (i * 3)) = (*(hb + i));
*(data + (i * 3) + 1) = *(hg + i);
*(data + (i * 3) + 2) = *(hr + i);
}
}
bmpImg.UnlockBits(bitmapData);
}
else if (Channels.I == 4)
{
System.Drawing.Imaging.PixelFormat pixelFmt = System.Drawing.Imaging.PixelFormat.Format32bppRgb;
HalconDotNet.HTuple hred, hgreen, hblue, type, width, height;
HalconDotNet.HOperatorSet.GetImagePointer3(HImg, out hred, out hgreen, out hblue, out type, out width, out height);
bmpImg = new System.Drawing.Bitmap(width.I, height.I, pixelFmt);
System.Drawing.Imaging.BitmapData bitmapData = bmpImg.LockBits(new System.Drawing.Rectangle(0, 0, width.I, height.I), System.Drawing.Imaging.ImageLockMode.ReadWrite, pixelFmt);
unsafe
{
byte* data = (byte*)bitmapData.Scan0;
byte* hr = (byte*)hred.IP;
byte* hg = (byte*)hgreen.IP;
byte* hb = (byte*)hblue.IP;
for (int i = 0; i < width.I * height.I; i++)
{
*(data + (i * 4)) = *(hb + i);
*(data + (i * 4) + 1) = *(hg + i);
*(data + (i * 4) + 2) = *(hr + i);
*(data + (i * 4) + 3) = 255;
}
bmpImg.UnlockBits(bitmapData);
}
}
else
{
bmpImg = null;
}
return bmpImg;
}
catch (HalconDotNet.HalconException ex)
{
Console.WriteLine("In ImageTypeConverter.Hobject2Bitmap: " + ex.Message);
return null;
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.Hobject2Bitmap: " + ex.Message);
return null;
}
}
/// <summary>
/// Convert HObject to BitmapImage
/// </summary>
/// <param name="HImg"></param>
/// <returns></returns>
public static System.Windows.Media.Imaging.BitmapImage Hobject2Bitmapimage(HalconDotNet.HObject HImg)
{
if (HImg == null)
return null;
try
{
System.Windows.Media.Imaging.BitmapImage bmpimg = new System.Windows.Media.Imaging.BitmapImage();
HalconDotNet.HTuple Channels;
HalconDotNet.HOperatorSet.CountChannels(HImg, out Channels);
if (Channels.I == 1)
{
System.Windows.Media.PixelFormat pixelFmt = System.Windows.Media.PixelFormats.Gray8;
HalconDotNet.HTuple hpointer, type, width, height;
HalconDotNet.HOperatorSet.GetImagePointer1(HImg, out hpointer, out type, out width, out height);
System.Windows.Media.Imaging.WriteableBitmap MetaImg = new System.Windows.Media.Imaging.WriteableBitmap(width.I, height.I, 96, 96, pixelFmt, null);
MetaImg.Lock();
unsafe
{
byte* data = (byte*)MetaImg.BackBuffer;
byte* img_ptr = (byte*)hpointer.IP;
for (int i = 0; i < width.I * height.I; i++)
*(data + i) = (*(img_ptr + i));
}
MetaImg.Unlock();
bmpimg = ConvertWriteablebitmapToBitmapimage(MetaImg);
}
else if (Channels.I == 3)
{
System.Windows.Media.PixelFormat pixelFmt = System.Windows.Media.PixelFormats.Bgr24;
HalconDotNet.HTuple hred, hgreen, hblue, type, width, height;
HalconDotNet.HOperatorSet.GetImagePointer3(HImg, out hred, out hgreen, out hblue, out type, out width, out height);
System.Windows.Media.Imaging.WriteableBitmap MetaImg = new System.Windows.Media.Imaging.WriteableBitmap(width.I, height.I, 96, 96, pixelFmt, null);
MetaImg.Lock();
unsafe
{
byte* data = (byte*)MetaImg.BackBuffer;
byte* hr = (byte*)hred.IP;
byte* hg = (byte*)hgreen.IP;
byte* hb = (byte*)hblue.IP;
for (int i = 0; i < width.I * height.I; i++)
{
*(data + (i * 3)) = (*(hb + i));
*(data + (i * 3) + 1) = *(hg + i);
*(data + (i * 3) + 2) = *(hr + i);
}
}
MetaImg.Unlock();
bmpimg = ConvertWriteablebitmapToBitmapimage(MetaImg);
}
else if (Channels.I == 4)
{
System.Windows.Media.PixelFormat pixelFmt = System.Windows.Media.PixelFormats.Pbgra32;
HalconDotNet.HTuple hred, hgreen, hblue, type, width, height;
HalconDotNet.HOperatorSet.GetImagePointer3(HImg, out hred, out hgreen, out hblue, out type, out width, out height);
System.Windows.Media.Imaging.WriteableBitmap MetaImg = new System.Windows.Media.Imaging.WriteableBitmap(width.I, height.I, 96, 96, pixelFmt, null);
MetaImg.Lock();
unsafe
{
byte* data = (byte*)MetaImg.BackBuffer;
byte* hr = (byte*)hred.IP;
byte* hg = (byte*)hgreen.IP;
byte* hb = (byte*)hblue.IP;
for (int i = 0; i < width.I * height.I; i++)
{
*(data + (i * 4)) = *(hb + i);
*(data + (i * 4) + 1) = *(hg + i);
*(data + (i * 4) + 2) = *(hr + i);
*(data + (i * 4) + 3) = 255;
}
}
MetaImg.Unlock();
bmpimg = ConvertWriteablebitmapToBitmapimage(MetaImg);
}
else
{
bmpimg = null;
}
return bmpimg;
}
catch (HalconDotNet.HalconException ex)
{
Console.WriteLine("In ImageTypeConverter.Hobject2Bitmapimage: " + ex.Message);
return null;
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.Hobject2Bitmapimage: " + ex.Message);
return null;
}
}
/// <summary>
/// Convert BitmapImage to HObject which Halcon data type
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static HalconDotNet.HObject Bitmapimage2Hobject(System.Windows.Media.Imaging.BitmapImage input)
{
if (input == null)
return new HalconDotNet.HObject();
try
{
HalconDotNet.HObject himg = new HalconDotNet.HObject();
int width = input.PixelWidth;
int height = input.PixelHeight;
int stride = width * ((input.Format.BitsPerPixel + 7) / 8);
byte[] imageData = new byte[height * stride];
input.CopyPixels(imageData, stride, 0);
IntPtr ImgPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(imageData.Length);
System.Runtime.InteropServices.Marshal.Copy(imageData, 0, ImgPtr, imageData.Length);
if (input.Format == System.Windows.Media.PixelFormats.Indexed8 || input.Format == System.Windows.Media.PixelFormats.Gray8)
{
HalconDotNet.HOperatorSet.GenImage1(out himg, "byte", input.PixelWidth, input.PixelHeight, ImgPtr);
}
else if (input.Format == System.Windows.Media.PixelFormats.Rgb24)
{
HalconDotNet.HOperatorSet.GenImageInterleaved(out himg, ImgPtr, "rgb", input.PixelWidth, input.PixelHeight, -1, "byte", input.PixelWidth, input.PixelHeight, 0, 0, -1, 0);
}
else if (input.Format == System.Windows.Media.PixelFormats.Bgr24)
{
HalconDotNet.HOperatorSet.GenImageInterleaved(out himg, ImgPtr, "bgr", input.PixelWidth, input.PixelHeight, -1, "byte", input.PixelWidth, input.PixelHeight, 0, 0, -1, 0);
}
else if (input.Format == System.Windows.Media.PixelFormats.Bgra32 || input.Format == System.Windows.Media.PixelFormats.Bgr32)
{
HalconDotNet.HOperatorSet.GenImageInterleaved(out himg, ImgPtr, "bgrx", input.PixelWidth, input.PixelHeight, -1, "byte", input.PixelWidth, input.PixelHeight, 0, 0, -1, 0);
}
else // default: trans to color image
{
System.Drawing.Bitmap Meta = ImageTypeConverter.Bitmapimage2Bitmap(input);
himg = ImageTypeConverter.Bitmap2Hobject(Meta);
}
System.Runtime.InteropServices.Marshal.FreeHGlobal(ImgPtr);
return himg;
}
catch (HalconDotNet.HalconException ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmapimage2Hobject: " + ex.Message);
return null;
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmapimage2Hobject: " + ex.Message);
return null;
}
}
/// <summary>
/// Convert Bitmap to HObject which Halcon dot net data type
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static HalconDotNet.HObject Bitmap2Hobject(System.Drawing.Bitmap input)
{
if (input == null)
return new HalconDotNet.HObject();
try
{
System.Drawing.Rectangle rect = new System.Drawing.Rectangle(0, 0, input.Width, input.Height);
HalconDotNet.HObject himg = new HalconDotNet.HObject();
if (input.PixelFormat == System.Drawing.Imaging.PixelFormat.Format8bppIndexed)
{
System.Drawing.Imaging.BitmapData srcBmpData = input.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format8bppIndexed);
HalconDotNet.HOperatorSet.GenImage1(out himg, "byte", input.Width, input.Height, srcBmpData.Scan0);
input.UnlockBits(srcBmpData);
}
else if (input.PixelFormat == System.Drawing.Imaging.PixelFormat.Format24bppRgb)
{
System.Drawing.Imaging.BitmapData srcBmpData = input.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
HalconDotNet.HOperatorSet.GenImageInterleaved(out himg, srcBmpData.Scan0, "bgr", input.Width, input.Height, -1, "byte", 0, 0, 0, 0, -1, 0);
input.UnlockBits(srcBmpData);
}
else if (input.PixelFormat == System.Drawing.Imaging.PixelFormat.Format32bppArgb)
{
System.Drawing.Imaging.BitmapData srcBmpData = input.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, input.PixelFormat);
HalconDotNet.HOperatorSet.GenImageInterleaved(out himg, srcBmpData.Scan0, "bgrx", input.Width, input.Height, -1, "byte", input.Width, input.Height, 0, 0, -1, 0);
input.UnlockBits(srcBmpData);
}
else // default: trans to color image
{
System.Drawing.Imaging.BitmapData srcBmpData = null;
System.Drawing.Bitmap MetaBmp = new System.Drawing.Bitmap(input.Width, input.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(MetaBmp);
g.DrawImage(input, rect);
g.Dispose();
srcBmpData = MetaBmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
HalconDotNet.HOperatorSet.GenImageInterleaved(out himg, srcBmpData.Scan0, "bgr", input.Width, input.Height, -1, "byte", 0, 0, 0, 0, -1, 0);
MetaBmp.UnlockBits(srcBmpData);
}
return himg;
}
catch (HalconDotNet.HalconException ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmap2Hobject: " + ex.Message);
return null;
}
catch (System.Exception ex)
{
Console.WriteLine("In ImageTypeConverter.Bitmap2Hobject: " + ex.Message);
return null;
}
}
參考資料：
[1] Bitmap與HImage間的互轉
(裡面有點錯誤，在我的程式碼中皆已修正)
[2] BitmapImage取出影像指標的方法(BitmapImage get byte)
(這方法取出的byte array的長度有問題!)
[3] Bitmap與BitmapImage間的轉換
[4]WPF的Image控件使用BitmapImage的资源占用问题
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