3D Shape Model Tracking for Object Orientation
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Solution Overview
Problem
Conventional techniques for tracking moving objects are unable to simultaneously determine the position and direction of an object, such as a person's orientation or the orientation of their face, which limits their effectiveness in applications like sports tracking.
Innovation Solution
An image processing system that generates a three-dimensional shape model of an object using multiple camera images, specifies the direction of this model, and stores it along with identification information, allowing for the tracking of both position and direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional tracking techniques are used, then object position can be determined, but object direction cannot be determined
Solution Approach 1:
The patent transitions from two-dimensional image tracking to three-dimensional shape model tracking by introducing depth information through multiple camera viewpoints. This dimensional expansion enables the system to determine both position and direction of objects, resolving the information loss while maintaining manageable system complexity through standardized 3D model generation processes
2Measurement precision
If multiple cameras are used to capture images from different directions, then both position and direction can be tracked, but system complexity increases
Solution Approach 1:
The patent creates a universal three-dimensional shape model that serves multiple functions: it enables both position determination and direction determination from a single integrated data structure. This multi-functionality allows the system to achieve high measurement precision for both parameters while avoiding the need for separate specialized systems, thereby managing overall system complexity
3Loss of information
If a three-dimensional shape model is generated from multiple images, then direction specification becomes possible, but processing time increases
Solution Approach 1:
The patent performs preliminary action by pre-generating standardized three-dimensional shape models from multiple camera images before actual tracking begins. These pre-generated models are then reused for direction specification during tracking operations, reducing the processing time required during active tracking while still providing complete spatial orientation data
Data Source
AI summary
An image processing apparatus, comprising a generation unit configured to generate a three-dimensional shape model of an object present in a field, based on a plurality of captured images obtained by a plurality of cameras that capture the field from different directions, a specification unit configured to specify a direction of the three-dimensional shape model generated by the generation unit, and a storage control unit configured to cause the direction of the three-dimensional shape model specified by the specification unit to be stored in a storage unit together with identification information of the object.