f (i > 1)//i==1已经重构出来了,不再需要提取系数
{
for (int j = 0; j < nextheight*nextwidth; j++)
pTmpImage[j] = pDstData[j];
for (int j = 0; j < 3 * nextheight*nextwidth; j++)
pTmpImage[nextheight*nextwidth + j] = pSrcCoef[gap + j];
gap += 3 * nextheight*nextwidth;
}