Overhead Imaging Platform Positioning for Specular Reflection Visibility
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Solution Overview
Problem
Overhead imaging systems face challenges in distinguishing objects from their surroundings due to shadows, similar colors, and varying light conditions, which can lead to obscured details and reduced image quality, especially in high or low light areas, and often require expensive higher resolution platforms to improve visibility.
Innovation Solution
A ground-based computing system determines optimal elevation and azimuth angles for an imaging platform to capture images of a target object during specular reflection, creating a significant optical difference between the object and its surroundings, allowing for enhanced feature visibility through machine learning-based processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If higher resolution imaging platforms are used to improve object visibility, then image quality and detail detection are improved, but system costs increase
Solution Approach 1:
The patent changes the parameter of light reflection angle by positioning the imaging platform at a specific glint angle (15-45 degrees from nadir) to create specular reflection from target objects. This parameter change enhances object visibility and contrast without requiring higher resolution sensors, thereby improving measurement precision while avoiding increased device complexity and costs.
2Difficulty of detecting and measuring
If overhead imaging is performed to capture scene details, then object detection capability is improved, but shadows and light saturation obscure details reducing visibility
Solution Approach 1:
The patent performs preliminary action by calculating the glint angle and scheduling image capture at the specific time when the satellite passes through the optimal position relative to the sun and target object. This preliminary calculation and timing ensures that the specular reflection occurs at the moment of capture, maximizing object visibility while avoiding shadow and saturation issues that would occur at other times.
3Loss of information
If images are captured at high light areas, then signal strength is improved, but saturation occurs reducing detail visibility
Solution Approach 1:
The patent applies local quality by creating a localized specular reflection (glint) that concentrates light reflection specifically from the target object surface, while surrounding areas remain at normal illumination levels. This localized enhancement improves signal strength for the target object without causing saturation, as the intense reflection is confined to the specific angular direction of the imaging sensor rather than affecting the entire scene uniformly.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method improves object visibility by creating a 20,000% difference in reflectance between the target and its surroundings, enabling more accurate identification of objects like automobiles in parking lots without the need for high-resolution imaging platforms, thus enhancing signal quality and reducing costs.
Implementation Method 1
the target object experiences a specular reflection, while its surroundings may not experience such a specular reflection
Data Source
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AI summary
Systems and methods are provided for enhancing object feature visibility for overhead imaging. In one embodiment, a computing system can obtain information associated with one or more locations of an imaging platform and one or more locations of a solar source. The system can determine one or more positional ranges of the imaging platform relative to the solar source based, at least in part, on such information. The positional ranges can be indicative of positions at which the imaging platform is to obtain image frames depicting at least a portion of a target object. The system can send, to the imaging platform, a set of data indicative of the positional ranges and can receive, from the imaging platform, a set of data indicative of the image frames depicting at least a portion of the target object. The image frames being captured based, at least in part, on the positional ranges.