Map Image Correction for Seamless Cross-Time Ground Display
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Solution Overview
Problem
Existing map data generation methods often result in unnatural transitions between images captured at different times due to discrepancies in global environments, leading to a non-seamless display for users.
Innovation Solution
A system that acquires map data including image data, capture time, position, and environmental change data, adjusts the image data to match the desired global environment based on the difference between capture time and display time, and displays the corrected image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If map data is constructed by combining image data captured at different times, then complete ground coverage is achieved, but the displayed images appear unnatural and non-seamless due to environmental changes
Solution Approach 1:
The system performs preliminary correction of image data by calculating and applying environmental change compensation before displaying the combined map data. This advance adjustment ensures that images captured at different times are harmonized to appear as if taken simultaneously, eliminating unnatural transitions while maintaining complete ground coverage
Solution Approach 2:
The system changes the temporal parameter of image data by applying environmental change data to adjust lighting, shadow, and other time-dependent visual characteristics. This parameter transformation allows images from different capture times to be unified under a consistent global environment, achieving seamless transitions across the complete ground coverage area
2Loss of information
If images captured at different times are combined for map data, then comprehensive ground information is obtained, but global environment discrepancies cause unnatural appearance
Solution Approach 1:
The system introduces environmental change data as an intermediary element that mediates between images captured at different times. This intermediary information about global environment changes (lighting, weather, season) is used to adjust and harmonize the combined images, preserving comprehensive ground information while ensuring visual naturalness through consistent environmental context
Solution Approach 2:
The system performs preliminary environmental harmonization by calculating the global environment at the desired display time and adjusting all image data accordingly before combination. This advance adjustment ensures that comprehensive ground information from different capture times is unified under a consistent environmental framework, eliminating unnatural appearances
Data Source
AI summary
A display device includes a map data acquisition unit configured to acquire map data including: image data of the ground, a time and date of the image data, positional data indicating a position where the image data was captured, and environmental change data in global environment per unit time at the position; a display condition acquisition unit configured to acquire information on a position and a time and date on the ground to be displayed; a global environment setting unit configured to set a global environment at the position and time and date to be displayed, by using a difference between the time and date of the image data and the time and date of the ground, and the environmental change data; a correction unit configured to correct the image data for the set global environment; and a display control unit configured to display the corrected image data.