Posture Estimation Using Provisional Joint Reference Positions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing posture estimation systems struggle to accurately determine the posture of a person when parts of the subject are hidden by other individuals or objects in the image.
Innovation Solution
A posture estimation apparatus and method that calculates provisional reference positions for each joint based on its position and displacement from a designated site, allowing accurate association of joints to the correct person even when the reference site is not visible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a detector or vector field method is used to estimate posture from image data, then the system can process video surveillance data efficiently, but the accuracy of posture estimation deteriorates when parts of the person are hidden by other people or objects
Solution Approach 1:
The patent transitions from 2D image coordinates to 3D spatial coordinates by calculating provisional reference positions using depth information. This dimensional change allows the system to disambiguate between overlapping persons in the image plane, resolving the accuracy problem when persons are hidden or occluded while maintaining video processing efficiency
Solution Approach 2:
The patent introduces provisional reference positions as an intermediary element that mediates between detected joints and person identification. By calculating these provisional positions based on joint positions and relative displacements, the system can accurately associate joints with the correct person even when reference sites are hidden, thereby improving posture estimation accuracy without sacrificing processing efficiency
Data Source
AI summary
A posture estimation apparatus includes: a position calculation unit that calculates, for each joint of each of persons detected from image data, a provisional reference position of the person, based on a position of the joint and a displacement from the joint to a site serving as a reference for the person; and a posture estimation unit that determines a person to which the joint belongs based on the provisional reference position calculated for each joint detected.