Single-Camera Sub-Terahertz Possession Detection via Virtual Image Mapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing determination devices using sub-terahertz wave images struggle to accurately determine a person's possession without multiple cameras, as the orientation of the camera and movement of the person affect the clarity of the image, leading to inaccuracies in identifying concealed items.
Innovation Solution
A determination device that captures sub-terahertz wave images and maps characteristic luminance distribution regions from these images onto corresponding visible light or infrared images, allowing for accurate identification of possessions by estimating virtual sub-terahertz wave images and using detection reliability degrees to enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single camera is used to capture sub-terahertz wave images, then device complexity is reduced, but measurement precision of possession determination deteriorates due to camera orientation and person movement effects
Solution Approach 1:
The patent creates a virtual sub-terahertz wave image that copies the characteristics of a multi-camera system using only single-camera data. The virtual image is generated by processing the captured sub-terahertz wave image to simulate what multiple cameras would capture, thereby maintaining measurement precision while reducing device complexity
Solution Approach 2:
The patent introduces a virtual sub-terahertz wave image as an intermediary between the single captured image and the final possession determination. This virtual image serves as a mediator that compensates for the limitations of single-camera imaging by incorporating information from visible light, infrared, or distance images to enhance determination accuracy
2Measurement precision
If multiple images from different time points are processed, then measurement precision of possession determination is improved through mapping analysis, but loss of time increases due to additional processing requirements
Solution Approach 1:
The patent performs preliminary actions by capturing visible light images, infrared images, or distance images at substantially the same time as the sub-terahertz wave images. These additional images are prepared in advance to serve as reference data for the mapping process, reducing the need for extensive post-capture processing and time-consuming adjustments
Solution Approach 2:
The patent employs dynamic mapping that adapts to person movement by detecting distinctive regions across multiple images captured at different time points. The mapping process dynamically adjusts to accommodate changes in person position and orientation, maintaining measurement precision without requiring rigid fixed-time capture sequences
Data Source
AI summary
A determination device includes: a distinctive region detector that detects a first distinctive region from first images that include a person and captured at mutually different time points; a reference position calculator that calculates a reference position from second images that include the person and captured at substantially the same time as the first images; a mapper that, when the first distinctive region is detected from one or more first images, maps, for each of the one or more first images, the detected first distinctive region onto the person included in a second image captured at substantially the same time as the first image, based on the first distinctive region and the reference position calculated from the second image; and a determiner that determines a possession of the person based on a mapping result. Each first image is a sub-terahertz wave image.