EVA (Exploratory Video Analytics)

What is EVA?

EVA is a visual data management system (think MySQL for videos). It supports a declarative language similar to SQL and a wide range of commonly used computer vision models.

What does EVA do?

• EVA enables querying of visual data in user facing applications by providing a simple SQL-like interface for a wide range of commonly used computer vision models.

• EVA improves throughput by introducing sampling, filtering, and caching techniques.

• EVA improves accuracy by introducing state-of-the-art model specialization and selection algorithms.

Quick Links

• Demo
• Website
• Documentation
• Tutorials
• Forum

Installation

Dependency

EVA requires Python 3.8 or later and JAVA 8. On Ubuntu, you can install the JAVA by sudo -E apt install -y openjdk-8-jdk openjdk-8-jre.

Recommended

To install EVA, we recommend using virtual environment and pip:

python3 -m venv env38
. env38/bin/activate
pip install --upgrade pip
pip install evatestdb

git clone https://github.com/georgia-tech-db/eva.git && cd eva
python3 -m venv env38
. env38/bin/activate
pip install --upgrade pip
sh script/antlr4/generate_parser.sh
pip install .

UPLOAD INFILE 'data/ua_detrac/ua_detrac.mp4' PATH 'test_video.mp4';

LOAD DATA INFILE 'test_video.mp4' INTO MyVideo;

SELECT id, data FROM MyVideo WHERE id < 5;

Example Queries

1. Search frames with a car

SELECT id, frame FROM MyVideo WHERE ['car'] <@ FastRCNNObjectDetector(frame).labels;

2. Search frames with a pedestrian and a car

SELECT id, frame FROM MyVideo WHERE ['pedestrian', 'car'] <@ FastRCNNObjectDetector(frame).labels;

2. Search frames containing greater than 3 cars

SELECT id, frame FROM DETRAC WHERE array_count(FastRCNNObjectDetector(frame).labels, 'car') > 3;

Documentation

You can find documentation for EVA here.

Contributing

To file a bug or request a feature, please file a GitHub issue. Pull requests are welcome.

For information on installing from source and contributing to EVA, see our contributing guidelines.

Contributors

See the people page for the full listing of contributors.

License

Copyright (c) 2018-2022 Georgia Tech Database Group Licensed under Apache License.