Probolems with object detection on Jetson Nano

kronvang · October 13, 2021, 12:42pm

I’m trying to run the Object detection sample on a Jetson Nano with the ZED 2. But i keep getting the error SL_AI_NOT_FOUND. I have tried to reinstall the SDK many times, on 2 different networks. and i simply can’t get it to work. It seems like the Object detection modul does not install properly. It does not ask to download any AI models like suggest here: Object detection error ZED 2 corrupted sdk installation · Issue #524 · stereolabs/zed-ros-wrapper · GitHub and the folder /Usr/local/zed/resources is empty as well. any help on how to get this to work? Thanks in advance, Frederik

adujardin · October 15, 2021, 2:23pm

Did you select “yes” during the installation process when asked about the Object Detection module?

Could you post the output of :

ls -al /usr/local/zed/*
ls -al /usr/lib/aarch64-linux-gnu/libcudnn.*
ls -al /usr/lib/aarch64-linux-gnu/libnvinfer.*

Thanks

baselch98 · October 18, 2021, 5:25pm

Yes I have had the same problem as well and selected yes. It just doesn’t work

mgzjzzhang · December 18, 2021, 8:58am

I have zhe same problem on xavier nx : SL_AI_NOT_FOUND,

arwinder-jaspal · July 5, 2023, 10:21am

Hi I have the same problem. I selected “Y” for all.
This the output for the commands:

ls -al /usr/local/zed/*

-rw------- 1 adlink adlink 7666 Jul 5 18:12 /usr/local/zed/get_python_api.py
-rw------- 1 adlink adlink 5628 Jul 5 18:12 /usr/local/zed/zed-config.cmake
-rw------- 1 adlink adlink 368 Jul 5 18:12 /usr/local/zed/zed-config-version.cmake

/usr/local/zed/doc:
total 16
drwx------ 4 adlink adlink 4096 Jul 5 18:12 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
drwx------ 3 adlink adlink 4096 Jul 5 18:12 API
drwx------ 2 adlink adlink 4096 Jul 5 18:12 license

/usr/local/zed/drivers:
total 24
drwx------ 5 adlink adlink 4096 Jul 5 18:12 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
drwx------ 2 adlink adlink 4096 Jul 5 18:12 L4T_35.1
drwx------ 2 adlink adlink 4096 Jul 5 18:12 L4T_35.2
drwx------ 2 adlink adlink 4096 Jul 5 18:12 L4T_35.3
-rw------- 1 adlink adlink 2644 Jul 5 18:12 README.md

/usr/local/zed/firmware:
total 24
drwx------ 6 adlink adlink 4096 Jul 5 18:12 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
drwx------ 2 adlink adlink 4096 Jul 5 18:12 ZED
drwx------ 2 adlink adlink 4096 Jul 5 18:12 ZED2
drwx------ 2 adlink adlink 4096 Jul 5 18:12 ZED2i
drwx------ 2 adlink adlink 4096 Jul 5 18:12 ZED-M

/usr/local/zed/include:
total 12
drwx------ 3 adlink adlink 4096 Jul 5 18:12 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
drwx------ 2 adlink adlink 4096 Jul 5 18:12 sl

/usr/local/zed/lib:
total 191100
drwx------ 2 adlink adlink 4096 Jul 5 18:11 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
-rw------- 1 adlink adlink 14700616 Jul 5 18:11 libsl_ai.so
-rw------- 1 adlink adlink 70932896 Jul 5 18:11 libsl_zed.so
-rw------- 1 adlink adlink 110028414 Jul 5 18:12 libsl_zed_static.a

/usr/local/zed/resources:
total 1001916
drwx------ 2 adlink adlink 4096 Jul 5 18:13 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
-rw------- 1 adlink adlink 64392 Jul 5 18:09 .8201_timing_cache
-rw------- 1 adlink adlink 13455894 Jul 5 18:09 .neural_depth_2.0.model_optimized-fbcbl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-0e53-512
-rw------- 1 adlink adlink 142659486 Jul 5 18:08 objects_accurate_3.0.model
-rw------- 1 adlink adlink 85529044 Jul 5 18:08 objects_medium_3.1.model
-rw------- 1 adlink adlink 24539089 Jul 5 18:08 objects_performance_3.0.model
-rw------- 1 adlink adlink 70009111 Jul 5 18:09 .person_head_accurate_2.4.model_optimized-jgabl-1-53-10020-8201-8201-4-64-256-48-64-512-1-10
-rw------- 1 adlink adlink 5758233 Jul 5 18:09 .person_head_performance_2.4.model_optimized-idcbl-1-53-10020-8201-8201-4-64-256-48-64-512-1-10
-rw------- 1 adlink adlink 8357581 Jul 5 18:09 person_reid_1.4.model
-rw------- 1 adlink adlink 4619764 Jul 5 18:09 .person_reid_1.4.model_optimized-aaabl-8-53-10020-8201-8201-4-64-256-48-64-512-1-10
-rw------- 1 adlink adlink 58986821 Jul 5 18:08 .skeleton_body18_3.2.model_optimized-bjcbl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-192
-rw------- 1 adlink adlink 74988764 Jul 5 18:08 .skeleton_body18_3.2.model_optimized-dcabl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-320
-rw------- 1 adlink adlink 75530876 Jul 5 18:09 .skeleton_body18_3.2.model_optimized-eeibl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-448
-rw------- 1 adlink adlink 62443777 Jul 5 18:09 .skeleton_body38_3.5.model_optimized-bjcbl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-192
-rw------- 1 adlink adlink 78446275 Jul 5 18:09 .skeleton_body38_3.5.model_optimized-dcabl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-320
-rw------- 1 adlink adlink 78994568 Jul 5 18:09 .skeleton_body38_3.5.model_optimized-eeibl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-448
-rw------- 1 adlink adlink 69658144 Jul 5 18:09 .skeleton_body70_3.3.model_optimized-bjcbl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-192
-rw------- 1 adlink adlink 85643084 Jul 5 18:09 .skeleton_body70_3.3.model_optimized-dcabl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-320
-rw------- 1 adlink adlink 86184778 Jul 5 18:09 .skeleton_body70_3.3.model_optimized-eeibl-1-53-10020-8201-8201-4-64-256-48-64-512-1-1-2-448

/usr/local/zed/samples:
total 52
drwx------ 13 adlink adlink 4096 Jul 5 18:12 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
drwx------ 6 adlink adlink 4096 Jul 5 18:12 ‘body tracking’
drwx------ 5 adlink adlink 4096 Jul 5 18:12 ‘camera control’
drwx------ 4 adlink adlink 4096 Jul 5 18:12 ‘camera streaming’
drwx------ 7 adlink adlink 4096 Jul 5 18:12 ‘depth sensing’
drwx------ 5 adlink adlink 4096 Jul 5 18:12 geotracking
drwx------ 6 adlink adlink 4096 Jul 5 18:12 ‘object detection’
drwx------ 4 adlink adlink 4096 Jul 5 18:12 ‘plane detection’
drwx------ 4 adlink adlink 4096 Jul 5 18:12 ‘positional tracking’
drwx------ 5 adlink adlink 4096 Jul 5 18:12 recording
drwx------ 4 adlink adlink 4096 Jul 5 18:12 ‘spatial mapping’
drwx------ 11 adlink adlink 4096 Jul 5 18:12 tutorials

/usr/local/zed/settings:
total 12
drwx------ 2 adlink adlink 4096 Jul 5 18:08 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
-rw------- 1 adlink adlink 1547 Jul 5 18:08 SN35498406.conf

/usr/local/zed/tools:
total 35660
drwx------ 2 adlink adlink 4096 Jul 5 18:09 .
drwx------ 11 adlink root 4096 Jul 5 18:12 …
-rw------- 1 adlink adlink 308 Jul 5 18:09 jetson_clocks.service
-rwx------ 1 adlink adlink 5935624 Jul 5 18:09 ZED360
-rwx------ 1 adlink adlink 8853344 Jul 5 18:09 ZED_Calibration
-rwx------ 1 adlink adlink 3022648 Jul 5 18:09 ZED_Depth_Viewer
-rwx------ 1 adlink adlink 6346464 Jul 5 18:09 ZED_Diagnostic
-rwx------ 1 adlink adlink 6513728 Jul 5 18:09 ZED_Explorer
-rwx------ 1 adlink adlink 2077712 Jul 5 18:09 ZEDfu
-rwx------ 1 adlink adlink 3660064 Jul 5 18:09 ZED_Sensor_Viewer
-rwx------ 1 adlink adlink 74648 Jul 5 18:09 ZED_SVO_Editor

ls -al /usr/lib/aarch64-linux-gnu/libcudnn.*

ls -al /usr/lib/aarch64-linux-gnu/libnvinfer.*

lrwxrwxrwx 1 root root 19 Nov 17 2021 /usr/lib/aarch64-linux-gnu/libnvinfer.so → libnvinfer.so.8.2.1
lrwxrwxrwx 1 root root 19 Nov 17 2021 /usr/lib/aarch64-linux-gnu/libnvinfer.so.8 → libnvinfer.so.8.2.1
-rw-r–r-- 1 root root 164944232 Nov 17 2021 /usr/lib/aarch64-linux-gnu/libnvinfer.so.8.2.1

adujardin · July 5, 2023, 12:44pm

Which version of the ZED SDK are you using? We fixed an issue in 4.0.4 (introduced in 4.0.3) that would specifically impact Jetson running on L4T 32.7 and object detection MULTI_CLASS_BOX* models.

It seems all models except MULTI_CLASS_BOX* are working from the output you posted. Which jetson module are you using and which version of JetPack / L4T?

Just in case you can try upgrading to the latest ZED SDK.