彩色相机 RGB8转 RGBPlanar格式
为啥要这样转呢，我可能是为了查分通道方便吧
有些缺陷特征，r通道明显，就只需要处理R通道的图像，能够提升效率

int RGB_Packed2Planar(unsigned char* packed,unsigned char* planar,int width,int height)
{
	if ( NULL == packed)
	{
		return MV_E_PARAMETER;
	}
	unsigned char* p_img = packed;
	unsigned char* p_r = planar;
	unsigned char* p_g = planar + height*width;
	unsigned char* p_b = planar + height*width * 2;
	for(int i = 0; i<height*width; i++)
	{
		p_r[i] = p_img[i*3];		//0、3、6
		p_g[i] = p_img[i*3+1];	//1、4、7
		p_b[i] = p_img[i*3+2];	//2、5、8
	}
	return 0;
}