how to set the initial parameters

[RuibinMa]

Hi, I'm using lsd-slam to reconstruct a 3D scene from a set of images (around 200). Is there anyway to set the parameters before I rosrun lsd-slam-core? Currently I'm only able to change the parameters by first running lsd-slam-core dataset_slam and then rqt-reconfigure. But since 200 frames ends so fast and the rqt-reconfigure loses control of those parameters once lsd-slam-core is terminated, adjusting parameters from time to time is so tedious. Is there anyway to set the parameters in some thing like a text file beforehand? Thank you very much!