Object Detection Tutorial#

Run on Google Colab View source on GitHub Download notebook

Start EVA server#

We are reusing the start server notebook for launching the EVA server.

!wget -nc "https://raw.githubusercontent.com/georgia-tech-db/eva/master/tutorials/00-start-eva-server.ipynb"
%run 00-start-eva-server.ipynb
cursor = connect_to_server()
File '00-start-eva-server.ipynb' already there; not retrieving.

[  -z "$(lsof -ti:5432)" ] || kill -9 "$(lsof -ti:5432)"
sh: 1: kill: Illegal number: 10378
nohup eva_server > eva.log 2>&1 &

WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv
Note: you may need to restart the kernel to use updated packages.

Download the Videos#

# Getting the video files
!wget -nc https://www.dropbox.com/s/k00wge9exwkfxz6/ua_detrac.mp4
# Getting the Yolo object detector
!wget -nc https://raw.githubusercontent.com/georgia-tech-db/eva/master/eva/udfs/yolo_object_detector.py
File 'ua_detrac.mp4' already there; not retrieving.

File 'yolo_object_detector.py' already there; not retrieving.

Load the surveillance videos for analysis#

We use regular expression to load all the videos into the table

cursor.execute('DROP TABLE ObjectDetectionVideos')
response = cursor.fetch_all()
cursor.execute('LOAD VIDEO "*.mp4" INTO ObjectDetectionVideos;')
response = cursor.fetch_all()
@status: ResponseStatus.SUCCESS
0  Table Successfully dropped: ObjectDetectionVideos
@query_time: 0.02094384000156424
@status: ResponseStatus.SUCCESS
0  Number of loaded VIDEO: 1
@query_time: 0.059963414998492226

Visualize Video#

from IPython.display import Video
Video("ua_detrac.mp4", embed=True)