Millimeter-Wave Security Scanner Dual Posture Imaging
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Solution Overview
Problem
Millimeter-wave human body security checking systems face challenges in obtaining high-quality images due to the limited detection array length, resulting in image quality degradation at body sides and inability to detect sheet-type objects perpendicular to the scanning plane, affecting detection efficiency and accuracy.
Innovation Solution
A method and system that utilize double standing postures for a person to be scanned by a millimeter-wave human body security detector, obtaining two images from different postures that are complementary, allowing for a complete contour image of the body, including sides, armpits, and inner thighs, to improve imaging quality and detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single standing posture is used for scanning, then the scanning process is simple and fast, but the image quality degrades at body sides and sheet-type objects perpendicular to the scanning plane cannot be detected
Solution Approach 1:
The system dynamically adjusts the scanning process by incorporating multiple standing postures (front, back, left side, right side) instead of using a fixed single posture. This dynamic approach allows the detection array to capture high-quality images from multiple angles, resolving the issue of image quality degradation at body sides while maintaining operational feasibility through systematic posture management.
Solution Approach 2:
The invention transitions from a two-dimensional single-angle scanning approach to a three-dimensional multi-angle scanning approach by adding the dimension of multiple standing postures. This enables the detection array to capture complete body contours including side regions and sheet-type objects that are perpendicular to any single scanning plane, thereby improving measurement precision without excessive complexity.
2Measurement precision
If the detection array length is limited, then the device structure is compact, but only the region directly facing the scanning plane can obtain high-quality images
Solution Approach 1:
The scanning process is segmented into multiple independent scanning operations, each targeting a specific body region from a different standing posture angle. The detection array scans the front, back, left side, and right side separately, allowing high-quality imaging of each segment while maintaining a compact detection array structure. The complete body image is reconstructed by combining these segmented scans.
Solution Approach 2:
The system compensates for the limited detection array length by adding the dimensional aspect of multiple scanning angles. Instead of expanding the array length in one dimension, the invention rotates the scanning perspective through multiple postures, effectively expanding the detection coverage area while maintaining array compactness.
3Measurement precision
If multiple standing postures are used for scanning, then complete body imaging is achieved, but the checking time increases
Solution Approach 1:
The system performs preliminary scanning in a first standing posture to quickly identify potential contraband locations, then uses a second standing posture for targeted verification. This preliminary action approach reduces the need for complete multi-angle scanning of every individual, thereby reducing checking time while maintaining detection accuracy through strategic use of multiple postures.
Solution Approach 2:
The scanning process skips redundant angles or postures when high-confidence detection is achieved in earlier scans. If contraband is clearly detected in the first standing posture scan, the system can skip additional postures or reduce the depth of subsequent scanning, thereby reducing checking time while maintaining detection accuracy through intelligent process termination.
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 enhances the accuracy and efficiency of security checking by ensuring comprehensive imaging of the body, reducing mutual occlusion and under-reporting of contraband, and improving the overall security checking process.
Implementation Method 1
scanning and checking a body of a checked person in a first standing posture by using a millimeter-wave human body security detector, so as to obtain a first millimeter-wave human body image
Data Source
AI summary
A method of millimeter-wave human body security checking based on double standing postures is provided, including: scanning and checking a body of a checked person in a first standing posture by using a millimeter-wave human body security detector, so as to obtain a first millimeter-wave human body image; scanning and checking the body of the same checked person in a second standing posture by using the millimeter-wave human body security detector, so as to obtain a second millimeter-wave human body image, wherein the second standing posture is different from the first standing posture (S10); and determining whether the checked person carries contraband based on at least the first millimeter-wave human body image and the second millimeter-wave human body image (S20). A system of millimeter-wave human body security checking based on double standing postures is provided, including: a millimeter-wave human body security detector (100) configured to: scan and check a body of a checked person in a first standing posture, so as to obtain a first millimeter-wave human body image, and scan and check the body of the same checked person in a second standing posture, so as to obtain a second millimeter-wave human body image, wherein the second standing posture is different from the first standing posture; and a processor (200) communicating with the millimeter-wave human body security detector (100) and configured to determine whether the checked person carries contraband based on at least the first millimeter-wave human body image and the second millimeter-wave human body image.