Millimeter-Wave Imaging Body Segmentation for Privacy
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Solution Overview
Problem
Current imaging systems using millimeter-wave technology face challenges in accurately identifying features of a subject, particularly when the subject is partially concealed by clothing or objects, and in efficiently processing images to protect privacy concerns.
Innovation Solution
The system employs electromagnetic radiation in the millimeter-wave range to interrogate subjects, generating image data that allows for the identification of body features and orientation, and modifies images to replace sensitive areas with substitute portions, ensuring privacy protection while maintaining image clarity and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If millimeter-wave imaging is used to detect concealed objects, then detection capability is improved, but privacy protection is compromised
Solution Approach 1:
The imaging system divides the detected subject into multiple body parts (head, torso, limbs, etc.) and processes each segment separately. This allows selective modification of specific regions (such as privacy-sensitive areas) while preserving detection capability in other regions, thus resolving the contradiction between detection and privacy protection.
Solution Approach 2:
The system applies different processing qualities to different regions of the image. Privacy-sensitive areas undergo modification or masking, while non-sensitive areas maintain full detection quality. This local differentiation allows the system to protect privacy where needed while preserving detection capability where appropriate.
2Measurement precision
If detailed image processing is performed to identify body features, then identification accuracy is improved, but processing time increases
Solution Approach 1:
The system performs preliminary processing by first identifying body part boundaries and orientations before conducting detailed feature analysis. This preliminary segmentation prepares the data structure in advance, allowing subsequent detailed processing to be performed more efficiently on already-organized regions, thus reducing overall processing time while maintaining accuracy.
Solution Approach 2:
The system applies detailed processing selectively to only those regions that require identification, rather than processing the entire image uniformly. By focusing computational resources on relevant body parts and features, the system achieves high identification accuracy while minimizing unnecessary processing time.
3Area of stationary object
If full body imaging is performed, then detection coverage is improved, but data processing complexity increases
Solution Approach 1:
The system segments the full body image into distinct anatomical regions and processes each segment independently. This segmentation reduces the complexity of processing the entire body at once, as each body part can be analyzed separately with simpler algorithms, while still maintaining comprehensive detection coverage across all regions.
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 enables effective detection of concealed objects and features, enhances image processing for privacy protection, and improves the speed and accuracy of surveillance, particularly in security applications.
Implementation Method 1
directing millimeter-wave signals at the subject and detecting the reflected signal
Data Source
AI summary
A method of surveilling a subject including a person's body may include or an imaging system may provide interrogating the subject with electromagnetic radiation, and generating, from the interrogating, image data representative of at least a first image of at least a portion of the person's body. In some examples, a first portion of the body may be identified, and a first feature of the image may be determined based at least partially on the identified portion of the body. In some examples, the orientation of the person's body may be determined from one or more features of one or more image portions. In some examples, a portion of the image of the person's body may be replaced with a substitute image portion.