c++ - C++ 中的原始图像和 DCRAW

Question

我希望能够在 C++ 中使用 RAW 图像，所以我下载了一个已经编译的 DCRaw 可执行文件。我尝试自己编译它，但我不断收到错误。所以我希望能够将原始图像读入 C++ 并使用它们。最好的方法是什么？我应该找到一种方法将 dcraw.c 包含在我的项目中并在其中调用函数，还是应该使用 system(...) 函数访问 EXE 文件？

Answer 1

If you don't want to manipulate the raw data directly in your application then yes you should use an already existing implementation of a raw image decoder (such as dcraw, like you said).

Here is what I would do in order of preference:

1. I would first try to find another raw image decoder that is available as a static or dynamic library version and link to that (dcraw only has an executable).

2. If #1 is not possible, I would extract the relevant parts of dcraw into a static library and link to that.

3. If not possible, I would include the .c file in my code like you have proposed.

4. I would only execute the EXE from within my program as a last resort.

That being said, if your application is for experimentation purposes only I don't see anything wrong in using the dcraw EXE from within your program. Otherwise I would not do this in a professional application.