decriptor dim

[Zhongyuan-Li]

thanks for appreciate job!
According to instruction, I use the --descriptor ORB+Boost-B for testing. According to config.yaml and the output log, the final boosted descriptor should be 256 dim with type uint8. But I actually got a descriptor in 32 dim with type uint8. Is the final ORB+Boost-B descriptor 32 dim in fact or did i missed something?