I just made a very simple face and bib detection program following the post by Adrian Rosebrock, with the weights trained with the downloaded trail running images using method described in the previous post. The speed is not very fast, which take more than 1 second for an image. Certainly, it is Google Colab free tier, so there are lots of variables that we cannot control and even do not know.
In previous post, we talked about how to scrape and download photos using Selenium and BeautifulSoup, from an online photo album of a trail running event. The next step is to identify the bib numbers in the photos automatically. This can be divided into two subtasks, the first one is to identify the location of the bib in an image, and the second one is to recognize bib numbers in the identified bib.