Как конвертировать System :: Drawing :: Image ^ в неподписанный символ

Мне нужно конвертировать Image ^ в unsigned char в winforms для функции распада.
Код:

void ConvertBayer8ToBGR(VmbUchar_t* bayerImgDat, VmbUchar_t* bgrOutputDat)
{
VmbUchar_t* newimagedata_start = bgrOutputDat;

int currentTempIndex = 0;
int nearestBluesAvg = 0;
int nearestRedsAvg = 0;
int nearestGreensAvg = 0;

for(int j = 0; j < 1100; j++)
{
for(int i = 0; i < 2752; i++) //G R G R G...
{
if(currentTempIndex % 2 == 0 /* even, green */)
{
//avg blue
if(j == 0) //if in the first row, only take next blue
{
nearestBluesAvg = *(bayerImgDat+currentTempIndex+2752);
}
else
{
nearestBluesAvg = (*(bayerImgDat + currentTempIndex + 2752) + *(bayerImgDat+currentTempIndex-2752)) / 2;
}
*bgrOutputDat = nearestBluesAvg; //b
bgrOutputDat++;
*bgrOutputDat = *(bayerImgDat + currentTempIndex); //g
bgrOutputDat++;
//avg red
if(i == 0) //if in first column, only take next red
{
nearestRedsAvg = *(bayerImgDat+currentTempIndex+1);
}
else
{
nearestRedsAvg = ( (*(bayerImgDat+currentTempIndex+1)) + (*(bayerImgDat+currentTempIndex-1)) ) / 2;
}
*bgrOutputDat = nearestRedsAvg; //r
bgrOutputDat++;

currentTempIndex++;
}
else /* odd, red*/
{
//avg blue
if(i == 1099) //if in last column, take just left-down blue pixel
{
nearestBluesAvg = *(bayerImgDat+currentTempIndex-1+2752);
}
else // else take both left-down and right-down
{
nearestBluesAvg = (*(bayerImgDat+currentTempIndex+1+2752) + *(bayerImgDat+currentTempIndex-1+2752)) / 2;
}
*bgrOutputDat = nearestBluesAvg; //b
bgrOutputDat++;
//avg green
nearestGreensAvg = (*(bayerImgDat+currentTempIndex-1) + *(bayerImgDat+currentTempIndex+2752)) / 2;
*bgrOutputDat = nearestGreensAvg;  //g
bgrOutputDat++;
*bgrOutputDat = *(bayerImgDat + currentTempIndex); //r
bgrOutputDat++;

currentTempIndex++;
}
}
for(int i = 0; i < 2752; i++)//B G B G B G B....
{
if(currentTempIndex % 2 == 0 /* even, blue */)
{

*bgrOutputDat = *(bayerImgDat + currentTempIndex); //b
bgrOutputDat++;
//avg green
nearestGreensAvg = (*(bayerImgDat + currentTempIndex + 1) + *(bayerImgDat + currentTempIndex -2752)) / 2;
*bgrOutputDat = nearestGreensAvg; //g
bgrOutputDat++;
//avg red
if(i == 0) //if first column, take only right-up pixel
{
nearestRedsAvg = *(bayerImgDat+currentTempIndex+1-2752);
}
else //else take both left-up and right-up pixels
{
nearestRedsAvg = (*(bayerImgDat+currentTempIndex-1-2752) + *(bayerImgDat+currentTempIndex+1-2752)) / 2;
}
*bgrOutputDat = nearestRedsAvg; //r
bgrOutputDat++;

currentTempIndex++;

}
else /* odd, green*/
{
//avg blue
if(i == 2751) //if in last column, only take previous blue (next blue doesnt exist)
{
nearestBluesAvg = *(bayerImgDat + currentTempIndex - 1);
}
else //else take both next and previous
{
nearestBluesAvg = (*(bayerImgDat+currentTempIndex+1) + *(bayerImgDat+currentTempIndex-1)) / 2;
}
*bgrOutputDat = nearestBluesAvg; //b
bgrOutputDat++;
*bgrOutputDat = *(bayerImgDat + currentTempIndex); //g
bgrOutputDat++;
//avg red
if(j == 1099) //if in last row, only take previous red (next red doesn't exist)
{
nearestRedsAvg = *(bayerImgDat+currentTempIndex-2752);
}
else //else take both
{
nearestRedsAvg = (*(bayerImgDat+currentTempIndex+2752) + *(bayerImgDat+currentTempIndex-2752)) / 2;
}
*bgrOutputDat = nearestRedsAvg; //r
bgrOutputDat++;

currentTempIndex++;
}
}
}bgrOutputDat = newimagedata_start;

}

Может ли кто-нибудь помочь мне преобразовать Image ^ в unsigned char или переписать эту функцию, чтобы использовать Image ^ в качестве входных данных?

Спасибо,
ndrew