August 20, 2025

• Looking at this literature overview on road conditions.
• Road markers are only mentioned 3x:
• First on detection and localization of non-distress objects:
  • He et al. [115], Sultani et al. [116], Eslami and Yun [117], Levenberg et al. [41] and Wang et al. [118].
  • He is a general resnet paper
  • Sultani is pavement object detection algorithm, based on superpixels.
  • Eslami and Yun is also an interesting paper. It preforms multi-class segmentation on the UCF-Pave dataset, which contains 2.1% of road markers. The UCF-Pave dataset includes 1215 pavement images.
  • Levenberg describes in its paper the data-collection in the LiRA project with the internal car sensors, near Copenhagen.
  • Wang concentrates in its paper on pavement cracks.
• Second on Semantic segmentation:
  • Shelhamer et al. [170]; Jégou et al. [171], Stricker et al. [5] and Zhou et al. [172].
  • Shelhamer is a general paper on semantic segemetation, same for Jégou's paper.
  • More interesting is Stricker's paper. Dataset contains heavy damaged roads, from BEV. The number of 1100 Road Markings. It complains that most other dataset contains less than 500 images. Yet the algorithm concentrates more on semantic segmentation.
  • Zhou is again a general (visual transformer) paper.
• Last on datasets:
  • Sultani et al. [116]. Looked at article. Small dataset, mainly on detection, not on classification.
• Also searched for the tag 'road marking damage'. This 2022 paper reports on a combined Spanish and Japanese dataset, with in total 971 labeled images. It reports a F1-score of 0.92, above a state of art F1-score of 0.74). It concentrates on blurred lines (D44 defects). Cited 19x

March 4, 2025

• The traffic-light documentation is no longer on the duckiebot website. Found the documentation on github
• Could login. Yet, no wifi connection. Found that I worked with the traffic-light in May 12, 2020. Yet, the problem in 2020 that I only had ipv6, now I haven't both.
• Did a docker ps, 10 dockers are running (daffy based), including the dt-device-proxy, dt-rosbridge-websocket, dt-device-online.
• Daffy is also the version of the documentation (for the Jetson based DB21, not the traffic-light).
• There is also WLS setup instructions.
• The test docker run hello-world failed, so had to install the docker-desktop (v4.38.0).
• On November 29, 2022 I worked with a fresh microSDX card, instead of the traffic-light card that was glued to the Rasperry Pi 3 Model B Plus Rev. 1.3.
• Looked into this instructions, and used sudo raspi-config (System Options) to connect to the my home wifi-network. Also enabled the ssh-interface, so I could login from my shuttle.
• Followed the instructions from this tutorial. Tried installing motion with sudo apt-get install motion, but the repositories cannot be updated (change 'Suite' value from stable to oldoldstable. Can be solved with apt-get update --allow-releaseinfo-change
• Followed the instructions from motioneye and installed pip install motioneye (v0.42.1) after pip install --upgrade --user pip (from 19.21. to 20.3.4). Installation failed on pycurl. Installed sudo apt install libcurl4-openssl-dev libssl-dev. pycurl now fails on missing arm-linux-gnueabihf-gcc. Tried sudo apt upgrade. Still the same error. Also older version of pycurl give an error.

January 28, 2025

• The Segway Loomo still charges, but is reset to factory settings. Yet, for installing the Following apps, the Android Loomo app is needed.
• Didn't see the Loomo app anymore in the store, the only Segway app is NineBot.
• The Ninebot only works with the GoKart and KickScooter series, not the old Segways.
• Best change seems to be to install from apk. Latest version 0.8.83, March 2020.
• Yet, installing apk is switches off by UvA-ICT.

Previous Labbooks

• Labbook 2024.
• Labbook 2023.
• Labbook 2022.
• Labbook 2021.
• Labbook 2020.
• Labbook 2019.