/// <summary>
/// <para>MatインスタンスをYUVインスタンスに変換します</para>
/// </summary>
/// <param name="MatImg">変換したいMatインスタンス</param>
/// <param name="colorSelect">0でYUV420、0以外でYUV444に変換</param>
/// <returns></returns>
public static YUV MatBGR2YUV(Mat MatImg, int colorSelect)
{
int j, k;
int width, height;
width = MatImg.Width;
height = MatImg.Height;
var step = MatImg.Step();
YUV imgTmp = new YUV(width, height, 444);
Mat distImg = null;
Cv2.CvtColor(MatImg, distImg, ColorConversionCodes.YUV2BGR);
unsafe
{
byte *datImgData = distImg.DataPointer;
for (k = 0; k < height; k++)
{
for (j = 0; j < width; j++)
{
imgTmp.Y[j + k * width] = datImgData[step * k + j * 3];
imgTmp.V[j + k * width] = datImgData[step * k + j * 3 + 1];
imgTmp.U[j + k * width] = datImgData[step * k + j * 3 + 2];
}
}
}
YUV YUVImg;
if (colorSelect == 0)
{
YUVImg = YUVProc.TransImage444To420(imgTmp, 1);
}
else
{
YUVImg = YUVProc.DeepCopy(imgTmp);
}
return(YUVImg);
}
/// <summary>
/// <para>YUVインスタンスをMatインスタンスに変換します</para>
/// </summary>
/// <param name="YUVImg">変換を行いたいYUVインスタンス</param>
/// <param name="fullYUV">YUVの変換形式を選択(ITU-R BT.601 規定YCbCr=0 , 8bitフルスケールYUV=1)</param>
/// <param name="mode">低速処理＝0,高速処理＝1(YUV420を処理する際の高速化設定)</param>
/// <returns>変換を行ったインスタンス(CV_8SC3形式,並び順:BGR)</returns>
public static Mat YUV2MatBGR(YUV YUVImg, int fullYUV, int mode)
{
int j, k;
int width, height;
int widthc, heightc;
int r, g, b;
width = YUVImg.Width;
height = YUVImg.Height;
widthc = YUVImg.Widthc;
heightc = YUVImg.Heightc;
Mat MatImg = new Mat(new Size(width, height), MatType.CV_8UC3);
var step = MatImg.Step();
YUV imgTmp;
if (YUVImg.ColorFormat == 420)
{
if (mode == 0)
{
imgTmp = YUVProc.TransImage420To444(YUVImg, 1);
}
else
{
imgTmp = YUVProc.TransImage420To444Fast(YUVImg, 1);
}
}
else
{
imgTmp = YUVProc.DeepCopy(YUVImg);
}
if (fullYUV != 0)
{ //8bitフルスケールYUVに変換
unsafe
{
byte *MatImgData = MatImg.DataPointer;
for (k = 0; k < height; k++)
{
for (j = 0; j < width; j++)
{
r = YUVProc.RoundingByte(imgTmp.Y[j + (k * width)] + 1.402 * (imgTmp.V[j + (k * width)] - 128));
g = YUVProc.RoundingByte(imgTmp.Y[j + (k * width)] - 0.344136 * (imgTmp.U[j + (k * width)] - 128) - 0.714136 * (imgTmp.V[j + (k * width)] - 128));
b = YUVProc.RoundingByte(imgTmp.Y[j + (k * width)] + 1.772 * (imgTmp.U[j + (k * width)] - 128));
MatImgData[step * k + j * 3 + 0] = (byte)b;
MatImgData[step * k + j * 3 + 1] = (byte)g;
MatImgData[step * k + j * 3 + 2] = (byte)r;
}
}
}
}
else
{ //ITU-R BT.601 規定YCbCrに変換
unsafe
{
byte *MatImgData = MatImg.DataPointer;
for (k = 0; k < height; k++)
{
for (j = 0; j < width; j++)
{
r = YUVProc.RoundingByte(1.164 * (imgTmp.Y[j + (k * width)] - 16) + 1.596 * (imgTmp.V[j + (k * width)] - 128));
g = YUVProc.RoundingByte(1.164 * (imgTmp.Y[j + (k * width)] - 16) - 0.391 * (imgTmp.U[j + (k * width)] - 128) - 0.813 * (imgTmp.V[j + (k * width)] - 128));
b = YUVProc.RoundingByte(1.164 * (imgTmp.Y[j + (k * width)] - 16) + 2.018 * (imgTmp.U[j + (k * width)] - 128));
MatImgData[step * k + j * 3 + 0] = (byte)b;
MatImgData[step * k + j * 3 + 1] = (byte)g;
MatImgData[step * k + j * 3 + 2] = (byte)r;
}
}
}
}
return(MatImg);
}
