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SysCV / LiDAR_snow_sim

LiDAR snowfall simulation
https://www.trace.ethz.ch/lidar_snow_sim
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TypeError: expected non-empty vector for x #13

Closed Rolandxx7 closed 2 years ago

Rolandxx7 commented 2 years ago

Dear Martin, I met a bug when I was running precompute.py. The reason for the problem is that the variable called ground_distances is empty and the error happens on this file called 2018-02-09_19-10-30_00000.bin. I do not know how to solve this problem because I haven't changed your other code except the corresponding path. Please give me some advice.

gunn: 63%|██████▎ | 2194/3469 [00:47<00:27, 46.29it/s] Traceback (most recent call last): File "C:/Users/Roland/Desktop/LiDAR_snow_sim-main/tools/snowfall/precompute.py", line 107, in <module> beam_divergence=float(np.degrees(3e-3))) File "C:\Users\Roland\Desktop\LiDAR_snow_sim-main\tools\snowfall\simulation.py", line 466, in augment p = np.polyfit(ground_distances, adaptive_noise_threshold, 2) File "<__array_function__ internals>", line 6, in polyfit File "C:\Users\Roland\miniconda3\envs\point_rcnn\lib\site-packages\numpy\lib\polynomial.py", line 630, in polyfit raise TypeError("expected non-empty vector for x") TypeError: expected non-empty vector for x

MartinHahner commented 2 years ago

Probably there is something wrong with the .bin file. You could investigate the .bin file with the help of pointcloud_viewer.py or just skip it and any other file that leads to a crash. If there are not too many files that leads to a crash, you should still be fine.

Raiden-cn commented 1 year ago

Hi, @Rolandxx7 ! I am stuck in the same bug. How did you resolve it?