3D Tracking and Machine Learning for Social Behavior Detection

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Solution Overview

Problem

Current automated systems for behavioral scoring in animals are limited to single animal assays, are labor-intensive, and lack accuracy, hindering the understanding of social behaviors and their disorders such as autism, due to reliance on manual scoring and limited tracking capabilities.

Innovation Solution

A system combining 3D tracking and machine learning using video cameras and depth sensors to automatically detect and quantify social behaviors in multiple subjects, enabling high-throughput analysis and classification of behaviors like attack, grooming, and social feeding, and allowing for the study of behavioral phenotypes and genotypes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual scoring of social behaviors is used, then behavioral analysis can be performed, but it is slow, labor-intensive, and subjective

Engineering Contradiction:
Improvebehavioral scoring accuracyVSAvoidbehavioral analysis throughput
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The patent replaces manual mechanical observation and scoring with an automated computer vision system that uses video cameras, depth sensors, and machine learning algorithms to detect and classify social behaviors, eliminating human labor while maintaining or improving measurement precision

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-service behavioral analysis by automatically capturing video data, processing it through pose estimation algorithms, and generating behavioral classifications without requiring human observers, thereby dramatically increasing throughput while preserving accuracy

Inventive Principle:
Principle #25Self-service

2Productivity

If automated systems for behavioral scoring are used, then productivity increases, but they are limited to single animal assays and simple tracking

Engineering Contradiction:
Improvebehavioral analysis throughputVSAvoidbehavior detection capability
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent creates a universal behavioral analysis system that can detect multiple types of social behaviors (grooming, attacking, following, etc.) across different animal species and experimental conditions using the same hardware and software platform, enabling high-throughput analysis without sacrificing versatility

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system transitions from 2D video tracking to 3D pose estimation by incorporating depth sensor data, enabling accurate detection of social behaviors that occur in three-dimensional space and improving the system's ability to handle complex multi-animal interactions

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Measurement precision

If 3D tracking with depth sensors is implemented, then behavioral detection accuracy improves, but device complexity increases

Engineering Contradiction:
Improvepose detection accuracyVSAvoidsystem hardware complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges video camera and depth sensor data into a unified processing pipeline, combining RGB and depth information to achieve accurate 3D pose estimation while managing system complexity through integrated hardware and software architecture

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS10121064B2Systems and methods for behavior detection using 3D tracking and machine learning
Publication Date: 2018.11.06 CALIFORNIA INST OF TECH
  • US10121064B2 patent drawing
  • US10121064B2 patent drawing
  • US10121064B2 patent drawing

AI summary

Systems and methods for performing behavioral detection using three-dimensional tracking and machine learning in accordance with various embodiments of the invention are disclosed. One embodiment of the invention involves a the classification application that directs a microprocessor to: identify at least a primary subject interacting with a secondary subject within a sequence of frames of image data including depth information; determine poses of the subjects; extract a set of parameters describing the poses and movement of at least the primary and secondary subjects; and detect a social behavior performed by at least the primary subject and involving at least the second subject using a classifier trained to discriminate between a plurality of social behaviors based upon the set of parameters describing poses and movement.