LoopDetection bug

[wattanakorn495]

Datatype should be double

int loop_distance_thr = odometry_length * 0.03;

double loop_distance_thr = odometry_length * 0.03;

and Should scale factor 0.03 be in config file?

[xukuanHIT]

@wattanakorn495 Hi, thank you for pointing out this bug; we have already fixed it. There are many parameters in the code, and we only provided a good initial value, which can indeed be modified based on the actual scenario. We are also considering adding them to the configuration file.