RGB文件与YUV文件相互转化

YUV与RGB彩色空间转换公式

Y = 0.299R + 0.587G + 0.114B;

U = -0.169R - 0.331G + 0.5B ;

V = 0.5R - 0.419G - 0.081B;

R = Y + 1.4075V;

G = Y - 0.3455U - 0.7169V;

B = Y + 1.779U;

基本算法

该程序算法分为下面几个模块：
1、预备阶段：rgb文件导入项目、打开rgb文件，创建要进行输出的yuv文件和新的rgb文件、开辟空间。
2、提取rgb文件中的r、g、b分量
3、计算yuv分量并实现uv下采样，按照yuv文件格式输出进文件
4、利用yuv分量计算rgb分量，按照rgb文件格式输出文件
5、空间释放

main函数

#include"iostream"
#include"math.h"
#include"stdio.h"
#include"malloc.h"
#include"rgb2yuv.h"
#include"yuv2rgb.h"
using namespace std;
int main(int argc, char* argv[]){char* imgaddr = argv[1];char* yuvaddr = argv[2];int W = atoi(argv[3]);int H = atoi(argv[4]);int imgsize = W*H*3;unsigned char* imgbuffer = new unsigned char[imgsize];unsigned char* Rbuffer = new unsigned char[imgsize/3];unsigned char* Gbuffer = new unsigned char[imgsize/3];unsigned char* Bbuffer = new unsigned char[imgsize/3];FILE* imgopen = fopen(imgaddr,"rb");if(imgopen == NULL){cout<<"打开rgb文件失败"<<endl;}FILE* yuvsave = fopen(yuvaddr,"w");if(yuvsave == NULL){cout<<"创建yuv空白文件失败"<<endl;}transf(Rbuffer, Gbuffer, Bbuffer, imgbuffer, imgopen, yuvsave, W, H);char* recoimgaddr = argv[5];FILE* saverec = fopen(recoimgaddr,"w");FILE* openyuv = fopen(yuvaddr,"rb");if(saverec == NULL){cout<<"创建恢复文件失败"<<endl;}int yuvFileSize;FILE* checkyuv = fopen(yuvaddr,"rb");fseek(checkyuv, 

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