图像像素点颜色获取+保存图片代码

#include #include #include

#include #include

#pragma comment(lib, \

using namespace std; using namespace Gdiplus;

int GetEncoderClsid(const WCHAR* format, LSID* pClsid) {

UINT num = 0; UINT size = 0;

ImageCodecInfo* pImageCodecInfo = NULL;

GetImageEncodersSize(&num, &size); if(size == 0) return -1;

pImageCodecInfo = (ImageCodecInfo*)(malloc(size)); if(pImageCodecInfo == NULL) return -1;

GetImageEncoders(num, size, pImageCodecInfo);

for(UINT j = 0; j < num; ++j) {

if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 ) {

*pClsid = pImageCodecInfo[j].Clsid; free(pImageCodecInfo); return j; } }

free(pImageCodecInfo); return -1; }

int main() {

GdiplusStartupInput gdiplusstartupinput; ULONG_PTR gdiplustoken;

GdiplusStartup(&gdiplustoken, &gdiplusstartupinput, nullptr);

wstring infilename(L\需要读取的图片 string outfilename(\保存结果 //读图片

Bitmap* bmp = new Bitmap(infilename.c_str()); UINT height = bmp->GetHeight(); UINT width = bmp->GetWidth();

cout << \

Color color;

ofstream fout(outfilename.c_str());

for (int y = 0; y < height; y++)//height for (int x = 0; x < width; x++)//width {

int grey;//灰度值

bmp->GetPixel(x, y, &color);

grey=((int)color.GetRed()*30+(int)color.GetGreen()*59+(int)color.GetBlue()*11)/100; //灰度值计算

fout << x << \ <

<< (int)color.GetBlue() << \

} CLSID pngClsid; GetEncoderClsid(L\ bmp->Save(L\//保存图片 fout.close();

delete bmp;

GdiplusShutdown(gdiplustoken); return 0; }

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