Object Region Extraction Using Polarization Degree Analysis
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Solution Overview
Problem
Existing technologies for extracting a region where an object is present using polarization information often require complex configurations with multiple polarization plates and are prone to errors due to noise and external factors, making accurate extraction difficult, especially when the object is similar to the background.
Innovation Solution
An information processing apparatus and method that calculates the degree of polarization based on polarization information from multiple directions and extracts the object region using a single polarization plate, determining the object region by analyzing the difference in luminance and automatically setting thresholds for accurate extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple polarization plates are arranged to extract object regions, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts only the necessary polarization information from a single polarization plate by analyzing luminance variations in multiple directions, rather than using multiple polarization plates. This extracts the essential measurement capability while removing the complexity of multiple plates.
Solution Approach 2:
The patent changes the measurement parameter from the physical arrangement of multiple polarization plates to the analysis of luminance intensity values in different directions. By measuring luminance at multiple angular positions and calculating polarization degree from these values, the system achieves the same measurement precision with a simpler single-plate configuration.
2Measurement precision
If multiple polarization plates are used to differentiate object from background, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent extracts the essential polarization measurement function from a complex multi-plate system and implements it through a single polarization plate with multi-directional luminance measurement. This extraction simplifies the operational requirements while maintaining measurement precision.
Solution Approach 2:
The system automatically calculates the degree of polarization and extracts object regions through algorithmic processing of luminance data from multiple directions. This self-service approach eliminates the need for manual configuration and adjustment of multiple polarization plates, significantly improving ease of operation.
3Device complexity
If a single polarization plate is used to simplify configuration, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent adds the dimension of angular measurement by measuring luminance in multiple directions (0°, 45°, 90°, 135°) with a single polarization plate. This dimensional expansion in the measurement space compensates for the reduction in physical components, maintaining measurement precision while simplifying the device configuration.
Solution Approach 2:
The patent transforms the measurement approach from spatial arrangement of multiple plates to angular sampling with a single plate. By measuring luminance intensity at multiple angular positions and using these parameters to calculate polarization degree, the system achieves equivalent measurement precision with reduced device complexity.
4Measurement precision
If polarization information from multiple directions is analyzed, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent performs preliminary measurement of luminance in multiple directions and stores these values for subsequent polarization calculation. By pre-capturing all necessary luminance data before calculation, the system minimizes repeated measurements and reduces overall processing time while maintaining measurement precision.
Solution Approach 2:
The system continuously measures luminance across multiple directions in a sequential manner, maintaining the measurement process without interruption. This continuous action approach ensures that all polarization information is captured efficiently in one operational cycle, reducing total processing time compared to discrete, separate measurements.
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 approach allows for accurate extraction of the object region with a simpler configuration, reducing errors and handling variations in object quality and background similarities, by using the degree of polarization to differentiate between the object and background regions.
Implementation Method 1
a region through which polarized light passes
Data Source
AI summary
An information processing apparatus including one or more processors that calculate a degree of polarization on the basis of polarization information in each of multiple directions, which is detected from a target region including a region through which polarized light passes, and extract a region in which an object is present on the basis of the degree of polarization.