C++ 压缩字节数组

大家好，

我加载一组图像并生成体积数据。我将此体积数据保存在

无符号字符*体积

array.

现在我想将此数组保存在文件中并检索。但在保存之前我想压缩字节数组，因为卷数据很大。

这方面有什么建议吗？

提前致谢。

volume在你的例子中不是一个数组。至于压缩，有一些关于该主题的书籍。如需快速、轻松地使用 C++ 进行操作，请查看升压iostream http://www.boost.org/doc/libs/1_44_0/libs/iostreams/doc/index.html图书馆，它附带zlib http://www.boost.org/doc/libs/1_44_0/libs/iostreams/doc/classes/zlib.html#basic_zlib_compressor, gzip http://www.boost.org/doc/libs/1_44_0/libs/iostreams/doc/classes/gzip.html#basic_gzip_compressor, and bzip2 http://www.boost.org/doc/libs/1_44_0/libs/iostreams/doc/classes/bzip2.html#basic_bzip2_compressor压缩机。

为了抵消我的挑剔，这里有一个例子（改为char因为它更加详细unsigned chars)

#include <fstream>
#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/iostreams/stream.hpp>
#include <boost/iostreams/filter/bzip2.hpp>
#include <boost/iostreams/device/array.hpp>
#include <boost/iostreams/copy.hpp>
namespace io = boost::iostreams;
int main()
{
    const size_t N = 1000000;
    char* volume = new char[N];
    std::fill_n(volume, N, 'a'); // 100,000 letters 'a'

    io::stream< io::array_source > source (volume, N);

    {  
      std::ofstream file("volume.bz2", std::ios::out | std::ios::binary); 
      io::filtering_streambuf<io::output> outStream; 
      outStream.push(io::bzip2_compressor()); 
      outStream.push(file); 
      io::copy(source, outStream); 
     }
    // at this point, volume.bz2 is written and closed. It is 48 bytes long
}