dlib 18.8 主要是小 bug 的修复和可用性的提升。详细内容包括：
New Features:
- Added the ability to set a previously trained function as a prior to the
svm_multiclass_linear_trainer, svm_c_linear_trainer, and svm_rank_trainer
objects.
- Added a user settable loss to the structural_assignment_trainer and
structural_track_association_trainer objects.
- Added evaluate_detectors(), a function for efficiently running multiple fHOG
based object detectors.
- Added the new split_on_first() and split_on_last() string manipulation functions.
- Added locally_change_current_dir, a RAII tool for switching between directories.
- You can now make a 1x1 matrix containing a single value by calling mat() on a single
scalar value.
- The point transform functions and frobmetric_training_sample are now serializable.
- Added a simplified operator << and >> based syntax for serializing to and
from files. So now you can serialize to a file using a syntax of:
serialize("myfile.dat") << myobject << another_object;
and then load those objects from disk via:
deserialize("myfile.dat") >> myobject >> another_object;
An arbitrary number of objects can be serialized or deserialized by
chaining the << and >> operators.
Non-Backwards Compatible Changes:
Bug fixes:
- Fixed a bug pointed out by Daniel Girardeau-Montaut. The covariance()
function didn't work on non-double valued matrices.
- Fixed a bug in the backtracking_line_search() function pointed out by
Ping-Chang Shih. The function ignored the max_iter parameter.
- Fixed a compiler error encountered when using clang 3.4 on Mac OS X 10.9.
Thanks to Martin Fergie for reporting this problem.
- Fixed a potential divide by zero in draw_fhog()
Other:
- Added an example program showing how to set a custom logger output hook.
- Made linear decision_functions which use sparse vectors much faster.
Dlib是一个使用现代C++技术编写的跨平台的通用库，遵守Boost Software licence.
项目主页：http://sourceforge.net/projects/dclib/
来自:开源中国社区
