Detecting stairs and pedestrian crosswalks for the blind by RGBD camera

@article{Wang2012DetectingSA,
  title={Detecting stairs and pedestrian crosswalks for the blind by RGBD camera},
  author={Shuihua Wang and Yingli Tian},
  journal={2012 IEEE International Conference on Bioinformatics and Biomedicine Workshops},
  year={2012},
  pages={732-739}
}
A computer vision-based wayfinding and navigation aid can improve the mobility of blind and visually impaired people to travel independently. In this paper, we develop a new framework to detect and recognize stairs and pedestrian crosswalks using a RGBD camera. Since both stairs and pedestrian crosswalks are featured by a group of parallel lines, we first apply Hough transform to extract the concurrent parallel lines based on the RGB channels. Then, the Depth channel is employed to further… CONTINUE READING
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