Face and Body Region Tracking Switching for Reliable Person Detection
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Solution Overview
Problem
Existing image processing technologies face interruptions in person tracking when the face region is not detected, particularly due to environmental changes or the person turning away, and lack robustness in tracking body regions.
Innovation Solution
An image processing system that includes a face detection unit, a partial region detection unit, and a tracking determination unit to select and track either the face or body region based on predetermined conditions, allowing for reliable tracking by switching between these regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If face detection is used for tracking, then tracking precision is improved, but tracking reliability deteriorates when face region is not detected
Solution Approach 1:
The patent divides the tracking target into two separate regions: face region and body region. The face detection unit detects the face region, while the body region detection unit detects the body region separately. This segmentation allows the system to switch between detecting face or body based on detection success, preventing tracking interruption when face is not detectable.
Solution Approach 2:
The tracking determination unit changes the detection parameter by selecting which region to detect based on predetermined conditions. When face detection is successful, the system tracks the face region; when face detection fails, it switches to tracking the body region. This dynamic parameter change maintains tracking continuity under varying conditions.
2Device complexity
If only face region tracking is implemented, then device complexity is reduced, but tracking reliability deteriorates under environmental changes
Solution Approach 1:
The patent segments the detection function into multiple independent units: face detection unit, body region detection unit, and tracking determination unit. Each unit operates independently with specific functions, allowing the system to maintain reliability through redundancy without requiring a single complex integrated system.
Solution Approach 2:
The tracking determination unit serves multiple functions: it determines which region to track based on detection conditions, switches between face and body region tracking, and coordinates the overall tracking process. This multi-functionality allows the system to handle various scenarios (face detectable, face undetectable, environmental changes) using a unified approach.
Data Source
AI summary
An image processing system includes a face detection unit to detect a face in an image and a partial region detection unit to detect a partial region of the image based on a position of the face detected in the image. A tracking determination unit may also be included in the image processing system to select at least one of the face and the partial region for tracking based on a predetermined condition, and to track the selected one of the face and the partial region.