Thank you for open-sourcing this great project. When I test the data you shared, the process runs smoothly. However, when I test my own data, the process gets stuck for a long time during the "random search around" phase, and the memory usage is also very high. I have 8 pairs of point clouds and images, and even with 32GB of memory, it gets completely filled up, and then the program gets killed. What could be the reason for this? I am using Ubuntu 18.04, PCL version 1.8, and Eigen version 3.3. Could you please provide some guidance on this issue? Thank you very much. 😄