Object Tracking via 3D Marker Coordinates
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Solution Overview
Problem
Digital imaging devices lose track of selected objects when they move out of the camera's field of view, preventing continuous tracking and focusing.
Innovation Solution
A digital imaging system that allows users to select and mark objects, using a processor to establish an initial frame of reference and track the object's position across multiple views by calculating movement and updating the marker's coordinates, enabling continuous tracking even when the object is not in the field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera tracks objects only within the current field of view, then the tracking is simple and reliable within view, but the object is lost when panned out of view
Solution Approach 1:
The patent extends tracking from 2D field-of-view coordinates to 3D spatial coordinates by incorporating depth information from stereo cameras. This allows the system to maintain object tracking even when the object moves out of the current field of view, resolving the contradiction between reliable in-view tracking and extended tracking range.
Solution Approach 2:
The system performs preliminary depth measurement and object position calculation before the object leaves the field of view. By pre-establishing the object's three-dimensional position and movement trajectory, the camera can predict and maintain tracking of the object even when it moves out of the current view, preventing track loss.
2Adaptability or versatility
If multiple objects are tracked simultaneously, then the system is more versatile, but the complexity of maintaining markers and tracking increases
Solution Approach 1:
The patent divides the tracking system into independent modules: depth measurement module, object detection module, marker management module, and coordinate transformation module. Each module handles specific tasks for individual objects, allowing multiple objects to be tracked simultaneously through modular processing rather than monolithic complex algorithms.
Solution Approach 2:
The system creates simplified two-dimensional marker representations of three-dimensional object positions. These marker copies are displayed on the screen to represent actual object locations, allowing the system to track multiple objects efficiently by managing lightweight marker data structures rather than full object models.
Data Source
AI summary
A digital imaging system that allows the user to select and mark objects with markers is disclosed. The digital imaging device tracks the position of the marked objects even when the marked objects are not in the field of view of the digital imaging system.