//?JPEGDecodeEncode.cpp?:?定義控制臺應用程序的入口點。
//

#include?“stdafx.h“
#include?
#include?
#include?
#include?
using?namespace?std;
using?namespace?cv;

double?getPSNR（Mat&?src1?Mat&?src2?int?bb=0）;

int?main（int?argc?char**?argv）
{
	Mat?src?=?imread（“lena.png“）;
	cout<<“origin?image?size:?“<	cout<<“height:?“<	cout<<“height*width*depth:?“<	//（1）?jpeg?compression
	vector?buff;//buffer?for?coding
	vector?param?=?vector（2）;
	param[0]=CV_IMWRITE_JPEG_QUALITY;
	param[1]=95;//default（95）?0-100

	imencode（“.jpg“srcbuffparam）;
	cout<<“coded?file?size（jpg）:?“<	Mat?jpegimage?=?imdecode（Mat（buff）CV_LOAD_IMAGE_COLOR）;

	//（2）?png?compression
	param[0]=CV_IMWRITE_PNG_COMPRESSION;
	param[1]=3;//default（3）??0-9.
	imencode（“.png“srcbuffparam）;
	cout<<“coded?file?size（png）:?“<	Mat?pngimage?=?imdecode（Mat（buff）CV_LOAD_IMAGE_COLOR）;

	//（3）?intaractive?jpeg?compression
	char?name[64];
	namedWindow（“jpg“）;
	int?q=95;
	createTrackbar（“quality““jpg“&q100）;
	int?key?=?0;
	while（key!=‘q‘）
	{
		param[0]=CV_IMWRITE_JPEG_QUALITY;
		param[1]=q;
		imencode（“.jpg“srcbuffparam）;
		Mat?show?=?imdecode（Mat（buff）CV_LOAD_IMAGE_COLOR）;

		double?psnr?=?getPSNR（srcshow）;//get?PSNR
		double?bpp?=?8.0*buff.size（）/（show.size（）.area（））;//bit/pixe;
		sprintf（name“quality:%03d?%.1fdB?%.2fbpp“qpsnrbpp）;
		putText（shownamePoint（1550）?FONT_HERSHEY_SIMPLEX1CV_RGB（255255255）2）;
		imshow（“jpg“show）;
		key?=?waitKey（33）;

		if（key?==‘s‘）
		{
			//（4）?data?writing?
			sprintf（name“q%03d_%.2fbpp.png“qbpp）;
			imwrite（nameshow）;

			sprintf（name“q%03d_%.2fbpp.jpg“qbpp）;
			param[0]=CV_IMWRITE_JPEG_QUALITY;
			param[1]=q;
			imwrite（namesrcparam）;;
		}
	}
}
double?getPSNR（Mat&?src1?Mat&?src2?int?bb）
{
	int?ij;
	double?ssemsepsnr;
	sse?=?0.0;

	Mat?s1s2;
	cvtColor（src1s1CV_BGR2GRAY）;
	cvtColor（src2s2CV_BGR2GRAY）;

	int?count=0;
	for（j=bb;j	{
		uchar*?d=s1.ptr（j）;
		uchar*?s=s2.ptr（j）;

		for（i=bb;i		{
			sse?+=?（（d[i]?-?s[i]）*（d[i]?-?s[i]））;
			count++;
		}
	}
	if（sse?==?0.0?||?count==0）
	{
		return?0;
	}
	else
	{
		mse?=sse?/（double）（count）;
		psnr?=?10.0*log10（（255*255）/mse）;
		return?psnr;
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-07-09?00:12??JPEGDecodeEncode\
?????目錄???????????0??2014-07-08?22:55??JPEGDecodeEncode\Debug\
?????文件???????80896??2014-07-08?22:56??JPEGDecodeEncode\Debug\JPEGDecodeEncode.exe
?????文件??????624092??2014-07-08?22:56??JPEGDecodeEncode\Debug\JPEGDecodeEncode.ilk
?????文件?????1682432??2014-07-08?22:56??JPEGDecodeEncode\Debug\JPEGDecodeEncode.pdb
?????目錄???????????0??2014-07-08?22:07??JPEGDecodeEncode\ipch\
?????目錄???????????0??2014-07-08?22:07??JPEGDecodeEncode\ipch\jpegdecodeencode-7e3800ee\
?????文件?????2359296??2014-07-08?22:07??JPEGDecodeEncode\ipch\jpegdecodeencode-7e3800ee\jpegdecodeencode-c9ebd184.ipch
?????目錄???????????0??2014-07-08?22:49??JPEGDecodeEncode\JPEGDecodeEncode\
?????文件????15683584??2014-07-09?00:12??JPEGDecodeEncode\JPEGDecodeEncode.sdf
?????文件?????????915??2014-07-08?22:07??JPEGDecodeEncode\JPEGDecodeEncode.sln
?????文件???????11264??2014-07-09?00:12??JPEGDecodeEncode\JPEGDecodeEncode.suo
?????目錄???????????0??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\
?????文件????????1610??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\cl.command.1.tlog
?????文件???????21304??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\CL.read.1.tlog
?????文件?????????990??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\CL.write.1.tlog
?????文件?????????406??2014-07-08?22:49??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.exe.embed.manifest
?????文件?????????472??2014-07-08?22:49??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.exe.embed.manifest.res
?????文件?????????381??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.exe.intermediate.manifest
?????文件??????????60??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.lastbuildstate
?????文件????????4343??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.log
?????文件??????315596??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.obj
?????文件?????1179648??2014-07-08?22:49??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.pch
?????文件?????????707??2014-07-08?22:49??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.vcxprojResolveAssemblyReference.cache
?????文件???????????0??2014-07-08?22:49??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode.write.1.tlog
?????文件?????????222??2014-07-08?22:49??JPEGDecodeEncode\JPEGDecodeEncode\Debug\JPEGDecodeEncode_manifest.rc
?????文件???????????2??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\link-cvtres.read.1.tlog
?????文件???????????2??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\link-cvtres.write.1.tlog
?????文件???????????2??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\link.18900-cvtres.read.1.tlog
?????文件???????????2??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\link.18900-cvtres.write.1.tlog
?????文件???????????2??2014-07-08?22:56??JPEGDecodeEncode\JPEGDecodeEncode\Debug\link.18900.read.1.tlog
............此處省略26個文件信息