Oblique Aerial Image View Matching Without Composite Stitching
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Solution Overview
Problem
Existing systems face challenges in efficiently visualizing and manipulating geographic scenes using oblique aerial imagery due to scale variations and perspective distortions, making it difficult to stitch or align multiple oblique images without complex normalization processes.
Innovation Solution
A system that determines a best-fit oblique image based on user inputs and view perspective information, allowing direct visualization and manipulation of non-composite oblique images by identifying the image that most closely matches the requested view without requiring computationally intensive stitching or alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional image stitching and alignment methods are used to visualize oblique aerial imagery, then a composite view of the geographic scene can be achieved, but the computational complexity and processing time increase significantly due to scale variations and perspective distortions
Solution Approach 1:
The patent extracts and utilizes the metadata (exif data) embedded in each oblique aerial image to store camera position, orientation, and capture parameters. This extracted metadata serves as the foundation for determining the best-fit image without requiring complex stitching algorithms, thereby reducing computational complexity while maintaining view accuracy.
Solution Approach 2:
Instead of creating a composite image through stitching, the patent creates a virtual composite view by selecting and displaying individual oblique images that best match the requested viewpoint. The system copies the essential view information from multiple source images into a searchable index, allowing direct retrieval of the best matching image without performing complex merging operations.
2Reliability
If oblique aerial images are stitched or aligned to create a composite view, then geographic scene visualization is achieved, but the processing time and computational resources required increase
Solution Approach 1:
The system performs preliminary actions by capturing and indexing metadata (exif data) from all oblique aerial images during the data collection phase. This pre-processing stores essential view parameters (camera position, orientation, tilt angle) in an accessible format, enabling rapid retrieval and comparison when a user requests a specific viewpoint, thus eliminating the need for time-consuming stitching operations during view generation.
Solution Approach 2:
The patent replaces the mechanical process of image stitching and alignment with a computational search and selection process. Instead of physically merging multiple images through complex algorithms, the system substitutes this with a database query that searches indexed metadata to identify the best-fit image, dramatically reducing processing time while maintaining accurate scene representation.
3Adaptability or versatility
If multiple oblique images are processed through normalization and stitching, then a comprehensive geographic view is obtained, but the system complexity and operational difficulty increase
Solution Approach 1:
The patent makes the system universal by using a single standardized metadata format (exif data) to store diverse camera parameters from multiple oblique images. This unified data structure enables the system to handle various image sources and viewpoints consistently, allowing users to request views from any location or angle without encountering complex operational difficulties, thus improving ease of operation while maintaining comprehensive geographic coverage.
4Reliability
If oblique aerial imagery is used to provide side-angle views and natural perspective, then the visualization quality improves, but the difficulty of aligning and stitching images increases due to perspective distortions
Solution Approach 1:
The patent introduces metadata (exif data) as an intermediary that bridges the gap between the oblique images and the desired viewpoint. This intermediary contains standardized parameters (camera position, orientation, tilt angle) that can be directly compared with requested view parameters, eliminating the need for complex perspective distortion correction and alignment algorithms while maintaining high visualization quality.
Data Source
AI summary
Described are systems and techniques for visualization and manipulation of non-composite oblique aerial imagery. One or more user inputs can be obtained by an oblique image visualization system associated with a plurality of non-composite oblique aerial images of a geographic area of interest. View perspective information indicative of a user-requested view of a scene or area within the geographic area of interest can be determined from the user inputs. One or more parameters of the view perspective information can be compared to a corresponding one or more parameters associated with each oblique image. A best match oblique image can be selected from the plurality of non-composite oblique aerial images based on the comparison. The best match oblique image can be output for display by the oblique image visualization system in response to the user-requested view.