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private ConvertTo ( |
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| src | ||
| dst | ||
| scale | double | |
| shift | double | |
| stream | ||
| return | void | |
/// <summary>
/// Convert this GpuMat to different depth
/// </summary>
/// <typeparam name="TOtherDepth">The depth type to convert to</typeparam>
/// <param name="stream">Use a Stream to call the function asynchronously (non-blocking) or null to call the function synchronously (blocking).</param>
/// <returns>GpuMat of different depth</returns>
public GpuMat <TOtherDepth> Convert <TOtherDepth>(Stream stream)
where TOtherDepth : new()
{
GpuMat <TOtherDepth> res = new GpuMat <TOtherDepth>(Size, NumberOfChannels);
GpuInvoke.ConvertTo(Ptr, res.Ptr, 1.0, 0.0, stream);
return(res);
}
/// <summary>
/// Convert the source image to the current image, if the size are different, the current image will be a resized version of the srcImage.
/// </summary>
/// <typeparam name="TSrcColor">The color type of the source image</typeparam>
/// <typeparam name="TSrcDepth">The color depth of the source image</typeparam>
/// <param name="srcImage">The sourceImage</param>
public void ConvertFrom <TSrcColor, TSrcDepth>(GpuImage <TSrcColor, TSrcDepth> srcImage)
where TSrcColor : struct, IColor
where TSrcDepth : new()
{
if (!Size.Equals(srcImage.Size))
{ //if the size of the source image do not match the size of the current image
using (GpuImage <TSrcColor, TSrcDepth> tmp = srcImage.Resize(Size, Emgu.CV.CvEnum.INTER.CV_INTER_LINEAR, null))
{
ConvertFrom(tmp);
return;
}
}
if (typeof(TColor) == typeof(TSrcColor))
{
#region same color
if (typeof(TDepth) == typeof(TSrcDepth)) //same depth
{
GpuInvoke.Copy(srcImage.Ptr, Ptr, IntPtr.Zero);
}
else //different depth
{
if (typeof(TDepth) == typeof(Byte) && typeof(TSrcDepth) != typeof(Byte))
{
double[] minVal, maxVal;
Point[] minLoc, maxLoc;
srcImage.MinMax(out minVal, out maxVal, out minLoc, out maxLoc);
double min = minVal[0];
double max = maxVal[0];
for (int i = 1; i < minVal.Length; i++)
{
min = Math.Min(min, minVal[i]);
max = Math.Max(max, maxVal[i]);
}
double scale = 1.0, shift = 0.0;
if (max > 255.0 || min < 0)
{
scale = (max == min) ? 0.0 : 255.0 / (max - min);
shift = (scale == 0) ? min : -min * scale;
}
GpuInvoke.ConvertTo(srcImage.Ptr, Ptr, scale, shift);
}
else
{
GpuInvoke.ConvertTo(srcImage.Ptr, Ptr, 1.0, 0.0);
}
}
#endregion
}
else
{
#region different color
if (typeof(TDepth) == typeof(TSrcDepth))
{ //same depth
ConvertColor(srcImage.Ptr, Ptr, typeof(TSrcColor), typeof(TColor), Size, null);
}
else
{ //different depth
using (GpuImage <TSrcColor, TDepth> tmp = srcImage.Convert <TSrcColor, TDepth>()) //convert depth
ConvertColor(tmp.Ptr, Ptr, typeof(TSrcColor), typeof(TColor), Size, null);
}
#endregion
}
}