raw简单插值算法

函数定义

struct RGBinfo{
BYTE B;
BYTE G;
BYTE R;
};

void CbmpView::RawInterpolation(RGBinfo** bmpbuffer,unsigned short** rawbuffer, UINT InterpolationMode,UINT rawBit,UINT rawWidth,UINT rawHeight)
{

switch (InterpolationMode)
{
case RG:
for (UINT i = 0; i< rawHeight; i++)
{
for (UINT j = 0; j < rawWidth; j++)
{
if (i % 2 == 0 && j % 2 == 0)
{
bmpbuffer[i][j].R = rawbuffer[i][j] >> (rawBit - 8);
bmpbuffer[i][j].B = 0;
bmpbuffer[i][j].G = 0;
}
else if (i % 2 == 1 && j % 2 == 1)
{
bmpbuffer[i][j].B = rawbuffer[i][j] >> (rawBit - 8);
bmpbuffer[i][j].R = 0;
bmpbuffer[i][j].G = 0;
}
else
{
bmpbuffer[i][j].G = rawbuffer[i][j] >> (rawBit-8);
bmpbuffer[i][j].R = 0;
bmpbuffer[i][j].B = 0;
}
}
}
for (UINT i = 0; i < rawHeight; i++)
{
for (UINT j = 0; j < rawWidth; j++)
{
bmpbuffer[0][0].G = (bmpbuffer[0][1].G+bmpbuffer[1][0].G)/2;//R   the frist pixel
bmpbuffer[0][0].B = bmpbuffer[1][1].B;//R
bmpbuffer[0][rawWidth - 1].R = bmpbuffer[0][rawWidth - 2].R;//the last pixel of frist line  G
bmpbuffer[0][rawWidth - 1].B = bmpbuffer[1][rawWidth - 1].B;

bmpbuffer[rawHeight - 1][0].B = bmpbuffer[rawHeight - 1][1].B;//G
bmpbuffer[rawHeight - 1][0].R = bmpbuffer[rawHeight - 2][0].R;
bmpbuffer[rawHeight - 1][rawWidth - 1].R = bmpbuffer[rawHeight - 2][rawWidth - 2].R;//B
bmpbuffer[rawHeight - 1][rawWidth - 1].G = (bmpbuffer[rawHeight - 1][rawWidth - 2].G+bmpbuffer[rawHeight-2][rawWidth-1].G)/2;
if (i == 0 && j != 0 && j != rawWidth - 1)//the frist line  RGRGRGRGRG
{                                                        // GBGBGBGBGB
if (j % 2 == 1)//G
{
bmpbuffer[i][j].R = (bmpbuffer[i][j - 1].R + bmpbuffer[i][j + 1].R) / 2;
bmpbuffer[i][j].B = bmpbuffer[i + 1][j].B;
}
else//R
{
bmpbuffer[i][j].G = (bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G+bmpbuffer[i+1][j].G) / 3;
bmpbuffer[i][j].B = (bmpbuffer[i + 1][j-1].B+bmpbuffer[i+1][j+1].B)/2;
}
}

if (i == rawHeight - 1 && j != 0 && j != rawWidth - 1)//the last line
{
if (j % 2 == 1)//B
{
bmpbuffer[i][j].R = (bmpbuffer[i-1][j-1].R + bmpbuffer[i-1][j+1].R) / 2;
bmpbuffer[i][j].G = (bmpbuffer[i-1][j].G+bmpbuffer[i][j-1].G+bmpbuffer[i][j+1].G) / 3;
}
else//G
{
bmpbuffer[i][j].B = (bmpbuffer[i][j-1].B+bmpbuffer[i][j+1].B) / 2;
bmpbuffer[i][j].R = bmpbuffer[i - 1][j].R;
}
}

if (j == 0 && i != 0 && i != rawHeight - 1)//the frist row   RGRG
{                                                        //  GBGB
if (i % 2 == 1)//G                                       RGRG
{                  //                                    GBGB
bmpbuffer[i][j].B = bmpbuffer[i][j + 1].B;
bmpbuffer[i][j].R = (bmpbuffer[i-1][j].R+bmpbuffer[i+1][j].R) / 2;
}
else//R
{
bmpbuffer[i][j].G = (bmpbuffer[i][j + 1].G+bmpbuffer[i-1][j].G+bmpbuffer[i+1][j].G)/3;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j+1].B + bmpbuffer[i + 1][j+1].B) / 2;
}
}

if (j == rawWidth - 1 && i != 0 && i != rawHeight - 1)//the last row
{
if (i % 2 == 1)//B
{
bmpbuffer[i][j].G = (bmpbuffer[i][j - 1].G+bmpbuffer[i-1][j].G+bmpbuffer[i+1][j].G)/3;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j-1].R + bmpbuffer[i + 1][j-1].R) / 2;
}
else//G
{
bmpbuffer[i][j].R = bmpbuffer[i][j-1].R;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j].B + bmpbuffer[i + 1][j].B) / 2;
}
}

if (i > 0 && i < rawHeight - 1 && j>0 && j < rawWidth - 1)//RGRGRG
{                                                         //GBGBGB
if (i % 2 == 0 && j % 2 == 1)//G                      //RGRGRG
{                                                     //GBGBGB
bmpbuffer[i][j].R = (bmpbuffer[i][j-1].R+bmpbuffer[i][j+1].R)/2;
bmpbuffer[i][j].B = (bmpbuffer[i-1][j].B+bmpbuffer[i+1][j].B)/2;
}
else if (i % 2 == 1 && j % 2 == 0)//G
{
bmpbuffer[i][j].R = (bmpbuffer[i-1][j].R+bmpbuffer[i+1][j].R)/2;
bmpbuffer[i][j].B = (bmpbuffer[i][j-1].B+bmpbuffer[i][j+1].B)/2;
}
else if (i % 2 == 1 && j % 2 == 1)//B
{
bmpbuffer[i][j].R = (bmpbuffer[i-1][j-1].R+bmpbuffer[i-1][j+1].R+bmpbuffer[i+1][j-1].R+bmpbuffer[i+1][j+1].R)/4;
bmpbuffer[i][j].G = (bmpbuffer[i-1][j].G+bmpbuffer[i+1][j].G+bmpbuffer[i][j-1].G+bmpbuffer[i][j+1].G)/4;
}
else//R
{
bmpbuffer[i][j].G = (bmpbuffer[i-1][j].G + bmpbuffer[i+1][j].G+bmpbuffer[i][j-1].G+bmpbuffer[i][j+1].G) / 4;
bmpbuffer[i][j].B = (bmpbuffer[i-1][j-1].B + bmpbuffer[i-1][j+1].B+bmpbuffer[i+1][j-1].B+bmpbuffer[i+1][j+1].B) / 4;
}
}
}
}
break;
case GR:
for (UINT i = 0; i< rawHeight; i++)
{
for (UINT j = 0; j < rawWidth; j++)
{
if (i % 2 == 0 && j % 2 == 1)
{
bmpbuffer[i][j].R = rawbuffer[i][j] >> (rawBit - 8);
bmpbuffer[i][j].B = 0;
bmpbuffer[i][j].G = 0;
}
else if (i % 2 == 1 && j % 2 == 0)
{
bmpbuffer[i][j].B = rawbuffer[i][j] >> (rawBit - 8);
bmpbuffer[i][j].R = 0;
bmpbuffer[i][j].G = 0;
}
else
{
bmpbuffer[i][j].G = rawbuffer[i][j] >> (rawBit - 8);
bmpbuffer[i][j].B = 0;
bmpbuffer[i][j].R = 0;
}

}//for(UINT j=0.....)
}//for(UINT i=0.....)

for (UINT i = 0; i < rawHeight;i++)
{
for (UINT j = 0; j < rawWidth; j++)
{
bmpbuffer[0][0].R = bmpbuffer[0][1].R;
bmpbuffer[0][0].B = bmpbuffer[1][0].B;
bmpbuffer[0][rawWidth - 1].G = (bmpbuffer[0][rawWidth - 2].G + bmpbuffer[1][rawWidth - 1].G) / 2;
bmpbuffer[0][rawWidth - 1].B = bmpbuffer[1][rawWidth - 2].B;

bmpbuffer[rawHeight - 1][0].G = (bmpbuffer[rawHeight - 2][0].G + bmpbuffer[rawHeight - 1][1].G) / 2;
bmpbuffer[rawHeight - 1][0].R = bmpbuffer[rawHeight - 2][1].R;
bmpbuffer[rawHeight - 1][rawWidth - 1].R = bmpbuffer[rawHeight - 2][rawWidth - 1].R;
bmpbuffer[rawHeight - 1][rawWidth - 1].B = bmpbuffer[rawHeight - 1][rawWidth - 2].B;
if (i == 0 && j != 0 && j != rawWidth - 1)//the frist line
{
if (j % 2 == 1)//R
{
bmpbuffer[i][j].G = (bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G + bmpbuffer[i + 1][j].G) / 3;
bmpbuffer[i][j].B = (bmpbuffer[i + 1][j - 1].B + bmpbuffer[i + 1][j + 1].B) / 2;
}
else//G
{
bmpbuffer[i][j].R = (bmpbuffer[i][j - 1].R + bmpbuffer[i][j + 1].R) / 2;
bmpbuffer[i][j].B = bmpbuffer[i + 1][j].B;
}
}

if (i == rawHeight - 1 && j != 0 && j != rawWidth - 1)//the last line
{
if (j % 2 == 1)//G
{
bmpbuffer[i][j].R = bmpbuffer[i - 1][j].R;
bmpbuffer[i][j].B = (bmpbuffer[i][j - 1].B + bmpbuffer[i][j + 1].B) / 2;
}
else//B
{
bmpbuffer[i][j].G = (bmpbuffer[i][j - 1].G + bmpbuffer[i - 1][j].G + bmpbuffer[i][j + 1].G) / 3;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j - 1].R + bmpbuffer[i - 1][j + 1].R) / 2;
}
}

if (j == 0 && i != 0 && i != rawHeight - 1)//the frist row
{
if (i % 2 == 1)//B
{
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G + bmpbuffer[i][j + 1].G) / 3;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j + 1].R + bmpbuffer[i + 1][j + 1].R) / 2;
}
else//G
{
bmpbuffer[i][j].R = bmpbuffer[i][j + 1].R;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j].B + bmpbuffer[i + 1][j].B) / 2;
}
}

if (j == rawWidth - 1 && i != 0 && i != rawHeight - 1)//the last row
{
if (i % 2 == 1)//G
{
bmpbuffer[i][j].B = bmpbuffer[i][j - 1].B;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j].R + bmpbuffer[i + 1][j].R) / 2;
}
else//R
{
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i][j - 1].G + bmpbuffer[i + 1][j].G) / 3;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j - 1].B + bmpbuffer[i + 1][j - 1].B) / 2;
}
}

if (i > 0 && i < rawHeight - 1 && j>0 && j < rawWidth - 1)
{
if (i % 2 == 0 && j % 2 == 1)//R
{
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j - 1].B + bmpbuffer[i - 1][j + 1].B + bmpbuffer[i + 1][j - 1].B + bmpbuffer[i + 1][j + 1].B) / 4;
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G + bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G) / 4;
}
else if (i % 2 == 1 && j % 2 == 0)//B
{
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G + bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G) / 4;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j - 1].R + bmpbuffer[i - 1][j + 1].R + bmpbuffer[i + 1][j - 1].R + bmpbuffer[i + 1][j + 1].R) / 4;
}
else if (i%2==1&&j%2==1)
{
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j].R + bmpbuffer[i + 1][j].R) / 2;
bmpbuffer[i][j].B = (bmpbuffer[i][j - 1].B + bmpbuffer[i][j + 1].B) / 2;
}
else
{
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j].B + bmpbuffer[i + 1][j].B) / 2;
bmpbuffer[i][j].R = (bmpbuffer[i][j - 1].R + bmpbuffer[i][j + 1].R) / 2;
}
}
}
}
break;
case BG:
for (UINT i = 0; i< rawHeight; i++)
{
for (UINT j = 0; j < rawWidth; j++)
{
if (i % 2 == 0 && j % 2 == 0)
{
bmpbuffer[i][j].B = rawbuffer[i][j] >> (rawBit - 8);
bmpbuffer[i][j].R = 0;
bmpbuffer[i][j].G = 0;
}
else if (i % 2 == 1 && j % 2 == 1)
{
bmpbuffer[i][j].R = rawbuffer[i][j] >> (rawBit - 8);
bmpbuffer[i][j].B = 0;
bmpbuffer[i][j].G = 0;
}
else
{
bmpbuffer[i][j].G = rawbuffer[i][j] >> (rawBit - 8);
bmpbuffer[i][j].R = 0;
bmpbuffer[i][j].B = 0;
}
}
}
/*
BGBGBGBG
GRGRGRGR
BGBGBGBG
GRGRGRGR
*/

for (UINT i = 0; i < rawHeight; i++)
{
for (UINT j = 0; j < rawWidth; j++)
{
bmpbuffer[0][0].G = (bmpbuffer[0][1].G + bmpbuffer[1][0].G) / 2;//B   the frist pixel
bmpbuffer[0][0].R = bmpbuffer[1][1].R;
bmpbuffer[0][rawWidth - 1].B = bmpbuffer[0][rawWidth - 2].B;//the last pixel of frist line  G
bmpbuffer[0][rawWidth - 1].R = bmpbuffer[1][rawWidth - 1].R;

bmpbuffer[rawHeight - 1][0].R = bmpbuffer[rawHeight - 1][1].R;//G
bmpbuffer[rawHeight - 1][0].B = bmpbuffer[rawHeight - 2][0].B;
bmpbuffer[rawHeight - 1][rawWidth - 1].B = bmpbuffer[rawHeight - 2][rawWidth - 2].B;
bmpbuffer[rawHeight - 1][rawWidth - 1].G = (bmpbuffer[rawHeight - 1][rawWidth - 2].G + bmpbuffer[rawHeight - 2][rawWidth - 1].G) / 2;
if (i == 0 && j != 0 && j != rawWidth - 1)//the frist line
{
if (j % 2 == 1)//G
{
bmpbuffer[i][j].B = (bmpbuffer[i][j - 1].B + bmpbuffer[i][j + 1].B) / 2;
bmpbuffer[i][j].R = bmpbuffer[i + 1][j].R;
}
else//B
{
bmpbuffer[i][j].G = (bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G + bmpbuffer[i + 1][j].G) / 3;
bmpbuffer[i][j].R = (bmpbuffer[i + 1][j - 1].R + bmpbuffer[i + 1][j + 1].R) / 2;
}
}

if (i == rawHeight - 1 && j != 0 && j != rawWidth - 1)//the last line
{
if (j % 2 == 1)//R
{
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j - 1].B + bmpbuffer[i - 1][j + 1].B) / 2;
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G) / 3;
}
else//G
{
bmpbuffer[i][j].R = (bmpbuffer[i][j - 1].R + bmpbuffer[i][j + 1].R) / 2;
bmpbuffer[i][j].B = bmpbuffer[i - 1][j].B;
}
}

if (j == 0 && i != 0 && i != rawHeight - 1)//the frist row   BGBG
{                                                        //  GRGR
if (i % 2 == 1)//G                                       BGBG
{                  //                                    GRGR
bmpbuffer[i][j].R = bmpbuffer[i][j + 1].R;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j].B + bmpbuffer[i + 1][j].B) / 2;
}
else//B
{
bmpbuffer[i][j].G = (bmpbuffer[i][j + 1].G + bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G) / 3;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j + 1].R + bmpbuffer[i + 1][j + 1].R) / 2;
}
}

if (j == rawWidth - 1 && i != 0 && i != rawHeight - 1)//the last row
{
if (i % 2 == 1)//R
{
bmpbuffer[i][j].G = (bmpbuffer[i][j - 1].G + bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G) / 3;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j - 1].B + bmpbuffer[i + 1][j - 1].B) / 2;
}
else//G
{
bmpbuffer[i][j].B = bmpbuffer[i][j - 1].B;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j].R + bmpbuffer[i + 1][j].R) / 2;
}
}

if (i > 0 && i < rawHeight - 1 && j>0 && j < rawWidth - 1)//BGBGBGBG
{                                                         //GRGRGRGR
if (i % 2 == 0 && j % 2 == 1)//G                      //BGBGBGBG
{                                                     //GRGRGRGR
bmpbuffer[i][j].B = (bmpbuffer[i][j - 1].B + bmpbuffer[i][j + 1].B) / 2;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j].R + bmpbuffer[i + 1][j].R) / 2;
}
else if (i % 2 == 1 && j % 2 == 0)//G
{
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j].B + bmpbuffer[i + 1][j].B) / 2;
bmpbuffer[i][j].R = (bmpbuffer[i][j - 1].R + bmpbuffer[i][j + 1].R) / 2;
}
else if (i % 2 == 1 && j % 2 == 1)//R
{
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j - 1].B + bmpbuffer[i - 1][j + 1].B + bmpbuffer[i + 1][j - 1].B + bmpbuffer[i + 1][j + 1].B) / 4;
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G + bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G) / 4;
}
else//B
{
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G + bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G) / 4;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j - 1].R + bmpbuffer[i - 1][j + 1].R + bmpbuffer[i + 1][j - 1].R + bmpbuffer[i + 1][j + 1].R) / 4;
}
}
}
}
break;
case GB:
for (UINT i = 0; i< rawHeight; i++)
{
for (UINT j = 0; j < rawWidth; j++)
{
if (i % 2 == 0 && j % 2 == 1)
{
bmpbuffer[i][j].B = rawbuffer[i][j] >> (rawBit - 8);
}
else if (i % 2 == 1 && j % 2 == 0)
{
bmpbuffer[i][j].R = rawbuffer[i][j] >> (rawBit - 8);
}
else
{
bmpbuffer[i][j].G = rawbuffer[i][j] >> (rawBit - 8);
}
}
}
/*
GBGBGBGB
RGRGRGRG
GBGBGBGB
RGRGRGRG
*/
for (UINT i = 0; i < rawHeight; i++)
{
for (UINT j = 0; j < rawWidth; j++)
{
bmpbuffer[0][0].B = bmpbuffer[0][1].B;
bmpbuffer[0][0].R = bmpbuffer[1][0].R;
bmpbuffer[0][rawWidth - 1].G = (bmpbuffer[0][rawWidth - 2].G + bmpbuffer[1][rawWidth - 1].G) / 2;
bmpbuffer[0][rawWidth - 1].R = bmpbuffer[1][rawWidth - 2].R;

bmpbuffer[rawHeight - 1][0].G = (bmpbuffer[rawHeight - 2][0].G + bmpbuffer[rawHeight - 1][1].G) / 2;
bmpbuffer[rawHeight - 1][0].B = bmpbuffer[rawHeight - 2][1].B;
bmpbuffer[rawHeight - 1][rawWidth - 1].B = bmpbuffer[rawHeight - 2][rawWidth - 1].B;
bmpbuffer[rawHeight - 1][rawWidth - 1].R = bmpbuffer[rawHeight - 1][rawWidth - 2].R;
if (i == 0 && j != 0 && j != rawWidth - 1)//the frist line
{
if (j % 2 == 1)//B
{
bmpbuffer[i][j].G = (bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G + bmpbuffer[i + 1][j].G) / 3;
bmpbuffer[i][j].R = (bmpbuffer[i + 1][j - 1].R + bmpbuffer[i + 1][j + 1].R) / 2;
}
else//G
{
bmpbuffer[i][j].B = (bmpbuffer[i][j - 1].B + bmpbuffer[i][j + 1].B) / 2;
bmpbuffer[i][j].R = bmpbuffer[i + 1][j].R;
}
}

if (i == rawHeight - 1 && j != 0 && j != rawWidth - 1)//the last line
{
if (j % 2 == 1)//G
{
bmpbuffer[i][j].B = bmpbuffer[i - 1][j].B;
bmpbuffer[i][j].R = (bmpbuffer[i][j - 1].R + bmpbuffer[i][j + 1].R) / 2;
}
else//R
{
bmpbuffer[i][j].G = (bmpbuffer[i][j - 1].G + bmpbuffer[i - 1][j].G + bmpbuffer[i][j + 1].G) / 3;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j - 1].B + bmpbuffer[i - 1][j + 1].B) / 2;
}
}

if (j == 0 && i != 0 && i != rawHeight - 1)//the frist row
{
if (i % 2 == 1)//R
{
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G + bmpbuffer[i][j + 1].G) / 3;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j + 1].B + bmpbuffer[i + 1][j + 1].B) / 2;
}
else//G
{
bmpbuffer[i][j].B = bmpbuffer[i][j + 1].B;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j].R + bmpbuffer[i + 1][j].R) / 2;
}
}

if (j == rawWidth - 1 && i != 0 && i != rawHeight - 1)//the last row
{
if (i % 2 == 1)//G
{
bmpbuffer[i][j].R = bmpbuffer[i][j - 1].R;
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j].B + bmpbuffer[i + 1][j].B) / 2;
}
else//B
{
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i][j - 1].G + bmpbuffer[i + 1][j].G) / 3;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j - 1].R + bmpbuffer[i + 1][j - 1].R) / 2;
}
}
/*
GBGBGBGB
RGRGRGRG
GBGBGBGB
RGRGRGRG
*/
if (i > 0 && i < rawHeight - 1 && j>0 && j < rawWidth - 1)
{
if (i % 2 == 0 && j % 2 == 1)//B
{
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j - 1].R + bmpbuffer[i - 1][j + 1].R + bmpbuffer[i + 1][j - 1].R + bmpbuffer[i + 1][j + 1].R) / 4;
bmpbuffer[i][j].G = (bmpbuffer[i - 1][j].G + bmpbuffer[i + 1][j].G + bmpbuffer[i][j - 1].G + bmpbuffer[i][j + 1].G) / 4;
}
else if (i % 2 == 1 && j % 2 == 0)//R
{
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j].B + bmpbuffer[i + 1][j].B + bmpbuffer[i][j - 1].B + bmpbuffer[i][j + 1].B) / 4;
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j - 1].R + bmpbuffer[i - 1][j + 1].R + bmpbuffer[i + 1][j - 1].R + bmpbuffer[i + 1][j + 1].R) / 4;
}
else if (i % 2 == 1 && j % 2 == 1)
{
bmpbuffer[i][j].B = (bmpbuffer[i - 1][j].B + bmpbuffer[i + 1][j].B) / 2;
bmpbuffer[i][j].R = (bmpbuffer[i][j - 1].R + bmpbuffer[i][j + 1].R) / 2;
}
else
{
bmpbuffer[i][j].R = (bmpbuffer[i - 1][j].R + bmpbuffer[i + 1][j].R) / 2;
bmpbuffer[i][j].B = (bmpbuffer[i][j - 1].B + bmpbuffer[i][j + 1].B) / 2;
}
}
}
}
break;
}
}