Dual Ultrawide Camera Layout for High-Resolution Subject Monitoring
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Solution Overview
Problem
Existing technologies for autonomous movable apparatuses fail to efficiently capture images with sufficient resolution for primary subjects while maintaining efficient data size, often resulting in poor size and usage efficiency of captured image data due to inconsistent object direction consideration.
Innovation Solution
The use of a monitoring apparatus with dual image capturing units, each with an optical system providing ultrawide-angle viewing angles, where one unit captures images upward and the other downward, ensuring opposite optical axes and varying resolutions across different regions, allowing high-resolution capture of primary subjects while maintaining efficient data size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional omnidirectional cameras are used to capture images in all directions, then the coverage area is improved, but the resolution for primary subjects deteriorates because the region for objects that are not the primary image capturing subject is larger than necessary
Solution Approach 1:
The optical system is designed with non-uniform magnification characteristics where the magnification varies depending on the field angle. Specifically, the magnification is larger in the vertical direction (upward/downward) and smaller in the horizontal direction, creating different resolution characteristics in different regions of the captured image. This allows high-resolution capture of primary subjects (typically in vertical directions for surveillance applications) while maintaining wider coverage in horizontal directions where less detail is needed.
2Measurement precision
If uniform high resolution is provided across the entire image capturing area, then the measurement precision is improved, but the data size increases reducing size efficiency
Solution Approach 1:
The optical system provides different resolution characteristics in different regions of the captured image. By having larger magnification in vertical directions and smaller magnification in horizontal directions, the system efficiently allocates pixel resources to regions where primary subjects are likely to be located (vertical regions in surveillance applications), thereby achieving high measurement precision for important areas while keeping the overall data size manageable.
3Ease of manufacture
If the magnification is uniform across all field angles, then the manufacturing simplicity is improved, but the adaptability to different object directions deteriorates
Solution Approach 1:
The optical system incorporates direction-dependent magnification characteristics through specific lens design. The magnification varies with field angle, being larger in vertical directions and smaller in horizontal directions. This is achieved through careful design of the optical path and lens elements, allowing the system to adapt to different object directions and prioritize resolution for vertically oriented subjects while maintaining manufacturing feasibility.
Solution Approach 2:
The optical system deliberately introduces asymmetry in the magnification characteristics between different directions (vertical vs. horizontal). This asymmetric design allows the system to optimize resolution for specific directions where primary subjects are most likely to be found, improving adaptability to different object directions while maintaining a relatively simple overall optical structure.
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 configuration enables high-resolution imaging of primary subjects while reducing data size and energy consumption, enhancing the precision and efficiency of object detection and navigation for autonomous movable apparatuses.
Implementation Method 1
an optical system configured to form an optical image on a light receiving surface of the image capturing element
Data Source
AI summary
A monitoring apparatus has a first image capturing unit and a second image capturing unit. Each of the first image capturing unit and the second image capturing unit is provided with an image capturing element, and an optical system configured to form an optical image on a light receiving surface of the image capturing element at an ultrawide angle viewing angle in which a resolution of a second region that is on an outer peripheral side of a first region is higher in comparison to a resolution of the first region that includes a center through which an optical axis passes. In addition, the first image capturing unit and the second image capturing unit are disposed such that t directions of the optical axes of the optical systems are opposite to each other.