Grayscale HObject to Bitmap
public static Bitmap HObject2Bitmap(HObject ho)
{<!-- -->
try
{<!-- -->
HTuple type, width, height, pointer;
//HOperatorSet.AccessChannel(ho, out ho, 1);
HOperatorSet.GetImagePointer1(ho, out pointer, out type, out width, out height);
//himg.GetImagePointer1(out type, out width, out height);
Bitmap bmp = new Bitmap(width.I, height.I, PixelFormat.Format8bppIndexed);
ColorPalette pal = bmp.Palette;
for (int i = 0; i <= 255; i ++ )
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pal.Entries[i] = Color.FromArgb(255, i, i, i);
}
bmp.Palette = pal;
BitmapData bitmapData = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.WriteOnly, PixelFormat.Format8bppIndexed);
int PixelSize = Bitmap.GetPixelFormatSize(bitmapData.PixelFormat) / 8;
int stride = bitmapData.Stride;
int ptr = bitmapData.Scan0.ToInt32();
for (int i = 0; i < height; i ++ )
{<!-- -->
CopyMemory(ptr, pointer, width * PixelSize);
pointer += width;
ptr += bitmapData.Stride;
}
bmp. UnlockBits(bitmapData);
return bmp;
}
catch (Exception exc)
{<!-- -->
return null;
}
}
HObject to HImage of grayscale image
public HImage HObject2HImage1(HObject hObj)
{<!-- -->
HImage image = new HImage();
HTuple type, width, height, pointer;
HOperatorSet.GetImagePointer1(hObj, out pointer, out type, out width, out height);
image.GenImage1(type, width, height, pointer);
return image;
}
Bitbmp to Hobject
public void BitmapToHobject(Bitmap bitmap, out HObject image)
{<!-- -->
int height = bitmap.Height;//The height of the image
int width = bitmap.Width;//The width of the image
Rectangle imgRect = new Rectangle(0, 0, width, height);
BitmapData bitData = bitmap.LockBits(imgRect, ImageLockMode.ReadOnly, bitmap.PixelFormat);
//Because the number of bytes in each line of the Bitmap image must be kept as a multiple of 4, when the number of bytes in the line does not meet this condition, the line will be supplemented, and the stride number Stride represents the number of each line after supplementation The number of bytes, also known as the scan width
int stride = bitData.Stride;
switch (bitmap. PixelFormat)
{<!-- -->
case PixelFormat.Format8bppIndexed:
{<!-- -->
unsafe
{<!-- -->
int count = height * width;
byte[] data = new byte[count];
byte* bptr = (byte*)bitData.Scan0;
fixed (byte* pData = data)
{<!-- -->
for (int i = 0; i < height; i ++ )
{<!-- -->
for (int j = 0; j < width; j ++ )
{<!-- -->
/*
*
If you use GenImage1 directly and pass in BitData's Scan0 (the pointer to the first element of the image) as a memory pointer, if the image does not satisfy the multiple of 4, then the filled part will also participate, resulting in image distortion
*
*
*/
// discard the filled part
data[i * width + j] = bptr[i * stride + j];
}
}
HOperatorSet.GenImage1(out image, "byte", width, height, new IntPtr(pData));
}
}
}
break;
case PixelFormat.Format24bppRgb:
{<!-- -->
unsafe
{<!-- -->
int count = height * width * 3;//24-bit BitMap has three bytes per pixel
byte[] data = new byte[count];
byte* bptr = (byte*)bitData.Scan0;
fixed (byte* pData = data)
{<!-- -->
for (int i = 0; i < height; i ++ )
{<!-- -->
for (int j = 0; j < width * 3; j++ )
{<!-- -->
//The pixels of each channel need to correspond one by one
data[i * width * 3 + j] = bptr[i * stride + j];
}
}
HOperatorSet.GenImageInterleaved(out image, new IntPtr(pData), "bgr", bitmap.Width, bitmap.Height, 0, "byte", bitmap.Width, bitmap.Height, 0, 0, -1, 0);
}
}
}
break;
default:
{<!-- -->
unsafe
{<!-- -->
int count = height * width;
byte[] data = new byte[count];
byte* bptr = (byte*)bitData.Scan0;
fixed (byte* pData = data)
{<!-- -->
for (int i = 0; i < height; i ++ )
{<!-- -->
for (int j = 0; j < width; j ++ )
{<!-- -->
data[i * width + j] = bptr[i * stride + j];
}
}
HOperatorSet.GenImage1(out image, "byte", width, height, new IntPtr(pData));
}
}
}
break;
}
bitmap. UnlockBits(bitData);
}
}