问题描述
我找了如何读取BMP文件转换为C的第2或1维数组，有很多解决方案，但不是我所需要的。
我需要阅读的黑白BMP成（以初学者）2维数组它必须从0包含值255（灰度）
然后将其转换成一维数组（但是这不是一个问题）。
Matlab的做到这一点automticly但我想更自主的在C / C ++的工作
在最后的BMP应当保存到数据库Postgre int数组。
谢谢
I looked for how to read a Bmp file into a 2 or 1 dimensional Array under C , there are many solutions but not the one i need.I need to read the Black and white bmp into (to beginn) 2 dimensional array which have to contain values from 0 to 255 (greyscale)and then transform it to 1 dimensional array(but that's not a problem).Matlab does this automticly but i want to be more autonomous working under C/C++at the end the bmp shall be saved into a Postgre Database int array.Thanks
推荐答案
还有我另一个SO问题做了一个BMP装载机：结果
结果
这个例子BMP有RGB，但似乎与灰阶到正常工作。
There's a bmp loader which I made for another SO question:
http://nishi.dreamhosters.com/u/so_bmp_v0.zip
The example bmp there is RGB, but it seems to work with grayscale as well.
FILE* f = fopen( "winnt.bmp", "rb" ); if( f==0 ) return 1;
fread( buf, 1,sizeof(buf), f );
fclose(f);
BITMAPFILEHEADER& bfh = (BITMAPFILEHEADER&)buf[0];
BITMAPINFO& bi = (BITMAPINFO&)buf[sizeof(BITMAPFILEHEADER)];
BITMAPINFOHEADER& bih = bi.bmiHeader;
char* bitmap = &buf[bfh.bfOffBits];
int SX=bih.biWidth, SY=bih.biHeight;
的位图的这里的指针像素表（应无符号
为适当的访问虽然）。注意，在BMP该像素行可以存储在
相反的顺序。
bitmap here is the pointer to the pixel table (should be made unsignedfor proper access though). Note that pixel rows in bmp can be stored inreverse order.
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