ch8 opencv 3.2.0 parallel_for_ doesn't support std::bind function

[gaoxiang12]

ch8 opencv 3.2.0 parallel_for_ doesn't support std::bind function

[gaoxiang12]

Thanks for commit. Looks like since opencv 4 the parallel_for_ has an overloaded form that supports std::function as the second input param: here.
For the second comment, I agree with that using params or gflags would be more elegant, but it's ok to use simple global variables in small demos like this one.

[rancheng]

and if you are using CLion, please note that the source file's data reference was in current directory like this:

string left_file = "./left.png";
string disparity_file = "./disparity.png";

this is dirty, please make sure you parameterize your file path, since the executive file will be compiled in cmake-build-debug directory

[rancheng]

The experiments are conducted in 4 scales:

[rancheng]

Thanks for your kind reply, I really appreciate your contributions!
Just ignore my jibber jabber on the second comment, yes, I compiled opencv4 and tested your code last night, that passed.
I'll close this issue, since the problem was solved, again, thanks for your great work on SLAMBOOK!