图像均值滤波代码

void AverageFilter(IMG_DATATYPE *pImg,int iWidth,int iHeight,int size)
{
    IMG_DATATYPE *pSrc = NULL;
    pSrc = new IMG_DATATYPE[iWidth * iHeight];
    int i,j,x,y,sum;

    if(pImg == NULL || pSrc == NULL || iWidth <= 0 || iHeight <= 0)
        return;

    for(i=0;i<iHeight;i++)
    {
        for(j=0;j<iWidth;j++)
        {
            sum = 0;
            for(x = -size/2;x <= size/2;x++)
                for(y = -size/2;y <= size/2;y++)
                {
                    if(i + x >= 0 && i + x < iHeight && j + y >= 0 && j + y < iWidth)
                        sum += pImg[(i + x) * iWidth + (j + y)];
                }

            pSrc[i * iWidth + j] = sum / (size * size);
        }
    }

    memcpy(pImg, pSrc, iWidth * iHeight * sizeof(IMG_DATATYPE));

    delete[] pSrc;
}