Panoramic Image Annotation Alignment via 3D Coordinate Intersection
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Solution Overview
Problem
Existing systems for displaying and processing annotations in panoramic images face challenges in accurately aligning and rendering user annotations across different panoramas, particularly in determining the precise coordinates of features across multiple panoramic views.
Innovation Solution
The system computes the intersection of user annotations in different panoramas based on known camera positions and directional coordinates, allowing for the generation of three-dimensional coordinates for annotations, which enables efficient and accurate alignment and rendering of annotations across panoramas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user annotations are processed separately for each panorama, then processing simplicity is maintained, but annotation alignment accuracy across panoramas deteriorates
Solution Approach 1:
The patent introduces an intermediary coordinate transformation process that mediates between different panorama coordinate systems. By computing transformation parameters from camera positions and viewing directions, and applying these to convert annotation coordinates across panoramas, the system achieves accurate alignment without requiring complex direct multi-paneora processing, thus resolving the contradiction between accuracy and complexity
Solution Approach 2:
The patent performs preliminary computation of transformation parameters based on known camera positions and viewing directions before actual annotation processing. By pre-calculating the coordinate transformation relationships between panoramas, the system establishes an accurate reference framework in advance, enabling subsequent annotation alignment to be both accurate and efficient
2Measurement precision
If annotation coordinates are computed without considering camera positions, then processing speed is maintained, but coordinate accuracy deteriorates
Solution Approach 1:
The patent changes the parameter representation from simple 2D image coordinates to 3D spatial coordinates by incorporating camera position and viewing direction parameters. This parameter transformation enables accurate computation of feature coordinates through ray intersection while maintaining processing efficiency through direct mathematical computation, resolving the contradiction between accuracy and efficiency
3Manufacturing precision
If panoramic images are displayed with high resolution, then image quality is improved, but data processing complexity deteriorates
Solution Approach 1:
The patent segments the panoramic image data into manageable coordinate systems and processing stages. By dividing the coordinate transformation process into distinct steps (camera position → viewing direction → ray computation → intersection calculation), the system handles high-resolution panorama data efficiently without overwhelming processing complexity, resolving the contradiction between image quality and processing complexity
Data Source
AI summary
A technique for efficient processing of annotations in images such as panoramic images is herein disclosed. In an embodiment, a first user annotation is received for a feature in a first panorama, and a second user annotation for the same feature is received in a second panorama. The coordinates for the feature can then be generated by computing the intersection between data generated for the first user annotation and for the second user annotations.